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2006 Toyota Highlander Hybrid

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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When problems were reported

Mileage at the reported incident

334 reports with mileage · 36 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes. Review the 76 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 74 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Hybrid Propulsion System. Review the 45 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

34 crash reports7 fire reports6 injury reports

Electrical System complaints

74 reports
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150,000 miles · Dec 12, 2019
Electrical SystemHybrid Propulsion System

TL* THE CONTACT OWNS A 2006 TOYOTA HIGHLANDER HYBRID. THE CONTACT STATED THAT THE VEHICLE DID NOT START AND THE HYBRID WARNING INDICATOR ILLUMINATED. THE CONTACT ALSO STATED THAT THE VEHICLE WAS REPAIRED THREE PREVIOUS TIMES BY NAGUABO AUTO TOYOTA (CARRETERA 31 KM 3.9, NAGUABO, PR 00718) REGARDING THE HYBRID MODULE. THE VEHICLE …

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TL* THE CONTACT OWNS A 2006 TOYOTA HIGHLANDER HYBRID. THE CONTACT STATED THAT THE VEHICLE DID NOT START AND THE HYBRID WARNING INDICATOR ILLUMINATED. THE CONTACT ALSO STATED THAT THE VEHICLE WAS REPAIRED THREE PREVIOUS TIMES BY NAGUABO AUTO TOYOTA (CARRETERA 31 KM 3.9, NAGUABO, PR 00718) REGARDING THE HYBRID MODULE. THE VEHICLE WAS NOT REPAIRED AGAIN. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.

NHTSA ODI #11288602

175,000 miles · Mar 20, 2019
Electrical SystemService Brakes

INTERMITTENTLY, WHILE DRIVING DOWN THE ROAD, ALL OF THE DASH LIGHTS COME ON, THERE IS A HIGH BEEPING SOUND, AND THE BRAKES STOPPED FUNCTIONING PROPERLY. THE BRAKES EITHER NEED TO BE MATCHED WITH EXTREME FORCE OR THE BRAKES WILL SLAM BY BARELY TOUCHING THE BRAKE PEDAL. TOYOTA ACKNOWLEDGES THAT THIS IS AN ISSUE AND OFFERED A WARR…

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INTERMITTENTLY, WHILE DRIVING DOWN THE ROAD, ALL OF THE DASH LIGHTS COME ON, THERE IS A HIGH BEEPING SOUND, AND THE BRAKES STOPPED FUNCTIONING PROPERLY. THE BRAKES EITHER NEED TO BE MATCHED WITH EXTREME FORCE OR THE BRAKES WILL SLAM BY BARELY TOUCHING THE BRAKE PEDAL. TOYOTA ACKNOWLEDGES THAT THIS IS AN ISSUE AND OFFERED A WARRANTY EXTENSION TO OWNERS OF THIS VEHICLE. I PURCHASED THE VEHICLE AFTER THE EXTENSION WAS OFFERED AND HAVEN'T HAD ISSUES UNTIL RECENTLY. I AM CONCERNED FOR NOT ONLY MY SAFETY BUT THE SAFETY OF MY FAMILY. I HAVE BEEN A TOYOTA FAN FOR ALL OF MY ADULT LIFE. HOWEVER, AFTER DEALING WITH THIS ISSUE AND BEING QUOTED $2000 TO FIX IT, I WOULD OFFER ADVICE TO ANYBODY OR NOT TO BUY A TOYOTA OR AT LEAST NOT A TOYOTA HYBRID. BUYER AND DRIVER BEWARE!

NHTSA ODI #11190314

Mileage unknown · Jun 7, 2018
Electrical SystemElectronic Stability Control (esc)Service Brakes

FIRST A LOUD RINGING HAPPENED AND CAR WOULD NOT STOP. WE HAVE SERVICED CAR REGULARLY, BRAKES ARE NEW, BUT CAR DOES NOT STOP. TRYING TO BRAKE AT THE INTERSECTION, STOP LIGHT AND HIGHLANDER WOULD NOT STOP. PUT US IN DANGER ALMOST LED ME INTO ACCIDENT, WAS TOLD IT WAS THE ABS SYSTEM AND THAT TOYOTA IS AWARE OF THIS. THIS IS A…

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FIRST A LOUD RINGING HAPPENED AND CAR WOULD NOT STOP. WE HAVE SERVICED CAR REGULARLY, BRAKES ARE NEW, BUT CAR DOES NOT STOP. TRYING TO BRAKE AT THE INTERSECTION, STOP LIGHT AND HIGHLANDER WOULD NOT STOP. PUT US IN DANGER ALMOST LED ME INTO ACCIDENT, WAS TOLD IT WAS THE ABS SYSTEM AND THAT TOYOTA IS AWARE OF THIS. THIS IS A HUGE SAFETY DESIGN ISSUE AND EXPENSIVE FIX TOYOTA NEEDS TO FIX THEIR DESIGN FLAWS. THERE IS NOT PHYSICAL CONTACT OR WEAR AND TEAR ON THE PART FOR IT TO FAIL. MS. DEBORAH HUSTON AT TOYOTA STONE WALLS THE PROCESS TO GET THIS RESOLVED. SHE CLAIMS TOYOTA IS NOT AWARE OF THESE ISSUES, BUT THE NHTSA RECORDS SHOW CUSTOMERS HAVE BEEN COMPLAINING FOR A LONG TIME AND THAT THEY KNOW.

NHTSA ODI #11100406

130,000 miles · May 8, 2018
Electrical SystemService Brakes

I WAS PREGNANT AND DRIVING WITH 2 SMALL CHILDREN WHEN THE LIGHTS ON MY DASHBOARD CAME ON ABOUT VSC AND A LOUD RINGING HAPPENED AND THEN I TRIED TO BRAKE AT THE STOP LIGHT AND THEY WERE SO DIFFICULT TO PUSH I BARELY STOPPED IN TIME TO AVOID AN ACCIDENT. WAS TOLD IT WAS THE ABS SYSTEM AND THAT TOYOTA IS AWARE OF THIS BUT PUT STIPU…

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I WAS PREGNANT AND DRIVING WITH 2 SMALL CHILDREN WHEN THE LIGHTS ON MY DASHBOARD CAME ON ABOUT VSC AND A LOUD RINGING HAPPENED AND THEN I TRIED TO BRAKE AT THE STOP LIGHT AND THEY WERE SO DIFFICULT TO PUSH I BARELY STOPPED IN TIME TO AVOID AN ACCIDENT. WAS TOLD IT WAS THE ABS SYSTEM AND THAT TOYOTA IS AWARE OF THIS BUT PUT STIPULATIONS ON AN EXTENDED WARRANTY RATHER THAN RECALL SO IT'S TOO LATE FOR MOST TO GET FIXED AND BE COVERED. THIS IS A HUGE SAFETY ISSUE AND EXPENSIVE FIX TOYOTA NEEDS TO STAND BEHIND.

NHTSA ODI #11092444

84,000 miles · Mar 22, 2018
Electrical System

CAR HAS 84,000 MILES ON IT. AFTER A 40 MINUTE HIUGHWAY DRIVE, CAR LOST POWER AND STALLED. ENGINE LIGHTS "CHECK HYBRID SYSTEM" "CHECK ABS" AND "CHECK VCS" CAME ON. TOWED TO DEALER, DIAGNOSTIC CHECK SAID THE PROBLEM WAS WITH A WIRING HARNESS FOR THE HYBRID ELECTRICAL CABLE, WHICH SUFFERED FROM CORROSION AND THUS WAS LEAKING VOLTAG…

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CAR HAS 84,000 MILES ON IT. AFTER A 40 MINUTE HIUGHWAY DRIVE, CAR LOST POWER AND STALLED. ENGINE LIGHTS "CHECK HYBRID SYSTEM" "CHECK ABS" AND "CHECK VCS" CAME ON. TOWED TO DEALER, DIAGNOSTIC CHECK SAID THE PROBLEM WAS WITH A WIRING HARNESS FOR THE HYBRID ELECTRICAL CABLE, WHICH SUFFERED FROM CORROSION AND THUS WAS LEAKING VOLTAGE. COST TO FIX MINIMUM OF $3500. FAULTY DESIGN??

NHTSA ODI #11080900

149,500 miles · Feb 20, 2018
Electrical SystemElectronic Stability Control (esc)Service Brakes

2006 HIGHLANDER HYBRID, CHECK HYBRID SYSTEM, CHECK VSC LIGHT, BRAKE AND ABS LIGHT ALL ON PERMANENTLY AND MY BRAKES AREN'T WORKING. I WAS FORTUNATE NOONE GOT HURT.. IT WAS REALLY DANGEROUS WHEN YOU PRESS THE BRAKE AND IT DOESN'T STOP. ... FROM WHAT I READ ABS ACCUMULATOR WHICH COST 3K+ TO REPLACE AND THE HYBRID INVERTER WHICH CO…

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2006 HIGHLANDER HYBRID, CHECK HYBRID SYSTEM, CHECK VSC LIGHT, BRAKE AND ABS LIGHT ALL ON PERMANENTLY AND MY BRAKES AREN'T WORKING. I WAS FORTUNATE NOONE GOT HURT.. IT WAS REALLY DANGEROUS WHEN YOU PRESS THE BRAKE AND IT DOESN'T STOP. ... FROM WHAT I READ ABS ACCUMULATOR WHICH COST 3K+ TO REPLACE AND THE HYBRID INVERTER WHICH COST 5K+ TO REPLACE. NHTSA PLEASE ISSUE A RECALL ON THIS ISSUES.

NHTSA ODI #11073977

200,000 miles · Nov 27, 2017
Electrical SystemEngine

WHILE DRIVING ON THE HIGHWAY 65MPH THE VEHICLE LOST ALL POWER,THE CHECK HYBRID LIGHT WAS FLASHING, WAS ABLE TO PULL OVER AND STOP. WAS ABLE TO RESTART VEHICLE AND DRIVE 110 MILE HOME.

NHTSA ODI #11048624

138,000 miles · Oct 8, 2017
Electrical SystemService Brakes

ABS SYSTEM FAILED AT 137,000 MILES , MECHANICS STATED THIS SHOULD NEVER HAPPEN,I WAS DRIVING WHEN ABS BRAKE LIGHT CAME ON AND CONTINUES TO STAY ON, AND ON 09/17 MY ABS AND BRAKE LIGHT IS ON,AND WHEN I PUSH BRAKE PETAL DOWN , MY CAR DOES NOT STOP. UNABLE TO GET CAR TO COME TO A STOP. I RECENTLY CHANGE MY BRAKE PADS IN AUGUST AND …

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ABS SYSTEM FAILED AT 137,000 MILES , MECHANICS STATED THIS SHOULD NEVER HAPPEN,I WAS DRIVING WHEN ABS BRAKE LIGHT CAME ON AND CONTINUES TO STAY ON, AND ON 09/17 MY ABS AND BRAKE LIGHT IS ON,AND WHEN I PUSH BRAKE PETAL DOWN , MY CAR DOES NOT STOP. UNABLE TO GET CAR TO COME TO A STOP. I RECENTLY CHANGE MY BRAKE PADS IN AUGUST AND EVERYTHING WAS WORKING PERFECTLY UNTILL SEPTAMBER 20TH 2017

NHTSA ODI #11032272

Mileage unknown · Apr 29, 2017
Electrical SystemUnknown Or Other

I AM ABOUT TO PURCHASE AN 06 TOYOTA HIGHLANDER 4X4 HYBRID. I RECEIVED INFORMATION THAT THE 06 TOYOTA HIGHLANDER HYBRID INVERTER HAS SERIOUS PROBLEMS, AND THAT THE COST TO FULLY REPAIR THIS PROBLEM IS HUGE. I WOULD LIKE TO PROTECT MYSELF FROM POTENTIAL PROBLEMS (LIKE THIS) BY NOT PURCHASING ANY SUCH VEHICLE. I WOULD ALSO LIKE TO …

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I AM ABOUT TO PURCHASE AN 06 TOYOTA HIGHLANDER 4X4 HYBRID. I RECEIVED INFORMATION THAT THE 06 TOYOTA HIGHLANDER HYBRID INVERTER HAS SERIOUS PROBLEMS, AND THAT THE COST TO FULLY REPAIR THIS PROBLEM IS HUGE. I WOULD LIKE TO PROTECT MYSELF FROM POTENTIAL PROBLEMS (LIKE THIS) BY NOT PURCHASING ANY SUCH VEHICLE. I WOULD ALSO LIKE TO KNOW (IF THIS ISSUE IS VALID) WHETHER DEALERSHIPS HAVE THE ABILITY TO BE INFORMED OF ANY SUCH VEHICLE PROBLEMS, BEFORE THEY SELL IT ON THEIR LOT?

NHTSA ODI #10981367

135,000 miles · Jul 10, 2016
Electrical SystemPower Train

WHILE DRIVING ON A MAJOR HIGHWAY AND IN THE FAST LANE GOING APPROXIMATELY 75/80 MPH MY 2006 TOYOTA HIGHLANDER HYBRID DIED AND FAILED TO DRIVE. THE PANEL ON THE DASH HAD A RED ! EXCLAMATION POINT, AND SAID CHECK HYBRID SYSTEM AND CHECK VSC SYSTEM. I WAS ABLE TO NAVIGATE MY VEHICLE TO THE RIGHT BREAKDOWN SHOULDER TO CALL FOR A TOW…

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WHILE DRIVING ON A MAJOR HIGHWAY AND IN THE FAST LANE GOING APPROXIMATELY 75/80 MPH MY 2006 TOYOTA HIGHLANDER HYBRID DIED AND FAILED TO DRIVE. THE PANEL ON THE DASH HAD A RED ! EXCLAMATION POINT, AND SAID CHECK HYBRID SYSTEM AND CHECK VSC SYSTEM. I WAS ABLE TO NAVIGATE MY VEHICLE TO THE RIGHT BREAKDOWN SHOULDER TO CALL FOR A TOW. TRIED TO START MY VEHICLE SEVERAL TIMES AND IT WOULD NOT START, BUT THE HAZARD LIGHTS AND INSTRUMENT PANEL CONTINUED TO LIGHT GIVING EVIDENCE MY NEW 12V BATTERY WAS FUNCTIONING PROPERLY. CALLED TOYOTA MOTOR USA AND ASKED WHAT RECALLS THEY HAVE LISTED FOR MY VEHICLE AND THEY ASKED FOR MY VIN. THEY TOLD ME THE ELECTRICAL INVERTER ASSEMBLY WAS COVERED FOR MY VIN. THEY GAVE ME THE NUMBER OF A TOW COMPANY TO CALL AND TOLD ME IT WAS COVERED BY TOYOTA AND I'D HAVE A RENTAL WAITING FOR ME. I HAD IT TOWED TO MY LOCAL DEALERSHIP AS DIRECTED, THEY FIXED SEVERAL OTHER RECALL ISSUES BUT NOT THIS ONE, SO WHEN I DROVE OFF THE LOT THE CAR DIED AGAIN. I MANAGED TO START THE VEHICLE AND DRIVE IT BACK ACROSS THE HIGHWAY INTO THE DEALERSHIP. AFTER SPEAKING WITH TOYOTA CORPORATION USA AGAIN, THEY APOLOGIZED AND SAID THEY MISINFORMED ME AND THAT MY VEHICLE WAS NOT PART OF THAT RECALL. HOWEVER, THEY PAID FOR MY TOW AND FOR MY RENTAL FOR 5 DAYS (THUS FAR). MY CASE NUMBER GIVEN FROM TOYOTA CORP IS 1607053248. I READ ONLINE THERE IS A CLASS ACTION SUIT REGARDING THIS ISSUE. KARL AND IRINA GAAL VS. TOYOTA MOTOR SALES, U.S.A., INC., A CALIFORNIA CORPORATION. VIA ATTY MIKE ARIAS. TOYOTA'S CUSTOMER EXPERIENCE HAS PUT IN A REQUEST FOR ME TO SPEAK WITH A SUPERVISOR AND THE TOYOTA DEALERSHIP'S GM IN MY AREA IS ALSO WORKING ON THIS ISSUE AS IT'S STILL PENDING.

NHTSA ODI #10883820

Official recalls

6

13V396000 · Hybrid Propulsion System: Inverter

Sep 4, 2013

Toyota is recalling certain model year 2006-2010 Highlander hybrid vehicles manufactured February 16, 2005, through July 29, 2010; and model year 2006-2008 Lexus RX400h vehicles manufactured February 23, 2005, through December 2, 2008. The Intelligent Power Module (IPM) inside the inverter module may contain transistors that have higher operating temperatures than the solder can support and the transistors may be heat damaged by the solder. If this occurs, various warning lamps, including the malfunction indicator lamp, slip indicator light, brake system warning light, and master warning light, will be illuminated on the instrument panel.

Consequence & remedy

Consequence: The vehicle may enter a fail-safe/limp-home mode that limits the drivability of the vehicle. It is possible that the hybrid system will shut down while the vehicle is being driven, causing the vehicle to stall unexpectedly, increasing the risk of a crash.

Remedy: Toyota will notify owners, and dealers will replace the IPM free of charge. Owners may contact Toyota at 1-800-331-4331. Vehicles that had their IPM replaced under recall 11V-342 are not affected by this campaign.

11V539000 · Engine And Engine Cooling

Nov 9, 2011

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2004 AVALON VEHICLES; 2004 AND 2005 CAMRY, CAMRY SOLARA, HIGHLANDER, AND SIENNA VEHICLES, 2006 HIGHLANDER HYBRID; 2004 AND 2005 LEXUS ES330 AND RX330; AND 2006 LEXUS RX400H VEHICLES MANUFACTURED FROM JUNE 1, 2004 THROUGH MARCH 31, 2005, EQUIPPED WITH THE 1MZ-FE OR 3MZ-FE ENGINE. THE AMOUNT OF ADHESIVE AGENT APPLIED BETWEEN THE OUTER RING AND THE TORSIONAL RUBBER DAMPER (INNER RING) IN THE CRANKSHAFT PULLEY MAY BE INADEQUATE. IF THE ADHESIVE IS INSUFFICIENT, THERE IS A POSSIBILITY THAT THE OUTER RING MAY BECOME MISALIGNED AND IT MAY NOT PROPERLY ROTATE WITH THE INNER RING, CAUSING NOISE AND/OR ILLUMINATION OF THE BATTERY DISCHARGE INDICATOR LIGHT.

Consequence & remedy

Consequence: IN SOME CASES, THE BELT FOR THE POWER STEERING PUMP MAY BECOME DETACHED FROM THE PULLEY WHICH COULD RESULT IN A LOSS OF POWER STEERING AND A SUDDEN INCREASE IN STEERING EFFORT, INCREASING THE RISK OF A CRASH.

Remedy: TOYOTA WILL NOTIFY OWNERS, AND DEALERS WILL CHECK THE CRANKSHAFT PULLEY TO IDENTIFY WHETHER IT WAS PRODUCED BY THE U.S. SUPPLIER. IF SO, THE DEALER WILL REPLACE THE PULLEY WITH A NEW ONE AT NO CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING EARLY JANUARY 2012. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.

11V342000 · Electrical System

Jun 29, 2011

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2006-2007 HIGHLANDER HYBRID AND LEXUS RX400H PASSENGER CARS MANUFACTURED FROM FEBRUARY 16, 2005, THROUGH AUGUST 30, 2006. A MODULE INSIDE THE INVERTER MODULE MAY CONTAIN INADEQUATELY SOLDERED TRANSISTORS THAT DURING HIGH-LOAD DRIVING, MAY BE DAMAGED BY HEAT CAUSED BY THE LARGE CURRENT. IF THIS OCCURS, VARIOUS WARNING LAMPS, INCLUDING THE MALFUNCTION INDICATOR LAMP, SLIP INDICATOR LIGHT, BRAKE SYSTEM WARNING LIGHT, AND MASTER WARNING LIGHT, WILL BE ILLUMINATED ON THE INSTRUMENT PANEL.

Consequence & remedy

Consequence: THE VEHICLE MAY ENTER A FAIL-SAFE/LIMP-HOME MODE THAT LIMITS THE DRIVABILITY OF THE VEHICLE. IT IS POSSIBLE THAT THE HYBRID SYSTEM WILL SHUT DOWN WHILE THE VEHICLE IS BEING DRIVEN, CAUSING THE VEHICLE TO STALL UNEXPECTEDLY, INCREASING THE RISK OF A CRASH.

Remedy: TOYOTA/LEXUS MAILED AN INTERIM OWNER NOTIFICATION ON JULY 19, 2011 TO ADVISE OWNERS OF THIS RECALL AND THE FACT THAT THEY WILL RECEIVE A FUTURE NOTICE WHEN PARTS BECOME AVAILABLE TO COMPLETE REPAIRS. TOYOTA DEALERS WILL INSPECT THE HYBRID INVERTER PRODUCTION NUMBER TO DETERMINE WHETHER THE INVERTER CONTAINS SUSPECT TRANSISTORS AND REPLACE THE MODULE FREE OF CHARGE. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.

11V112000 · Vehicle Speed Control:accelerator Pedal

Feb 24, 2011

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2004-2006 HIGHLANDER, HIGHLANDER HYBRID, AND MODEL YEAR 2004-2007 LEXUS RX330, RX350, AND RX400H VEHICLES. IF THE FORWARD RETENTION CLIP USED TO SECURE THE FLOOR CARPET COVER, WHICH IS LOCATED IN FRONT OF THE CENTER CONSOLE, IS NOT INSTALLED PROPERLY THE COVER MAY LEAN TOWARD THE ACCELERATOR PEDAL AND INTERFERE WITH THE ACCELERATOR PEDAL ARM.

Consequence & remedy

Consequence: IF THIS OCCURS, THE ACCELERATOR PEDAL MAY TEMPORARILY BECOME STUCK IN A PARTIALLY DEPRESSED POSITION RATHER THAN RETURN TO THE IDLE POSITION. A STUCK ACCELERATOR PEDAL MAY RESULT IN UNINTENDED AND SUSTAINED VEHICLE SPEEDS AND MAKE IT DIFFICULT TO STOP, INCREASING THE RISK OF A VEHICLE CRASH.

Remedy: DEALERS WILL REPLACE THE FLOOR CARPET COVER WITH A NEWLY DESIGNED ONE FREE OR CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING MARCH 2011. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.

09V223000 · Equipment:other:labels

Jun 15, 2009

TOYOTA IS RECALLING 27,080 MODEL YEAR 2005 THROUGH 2010 PASSENGER CARS BUILT FROM SEPTEMBER 1, 2005 TO MAY 4, 2009. THESE VEHICLES WERE NOT EQUIPPED WITH LOAD CARRYING CAPACITY MODIFICATION LABELS WHICH FAILS TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS."

Consequence & remedy

Consequence: INCORRECT LOAD CARRYING CAPACITY MODIFICATION LABELS COULD RESULT IN THE VEHICLE BEING OVERLOADED, INCREASING THE RISK OF A CRASH.

Remedy: TOYOTA WILL NOTIFY OWNERS AND PROVIDE THEM WITH A NEW, ACCURATE LABEL TO BE INSTALLED OVER THE INACCURATE LABEL FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 18, 2009. OWNERS MAY CONTACT TOYOTA AT 1-888-270-9371.

06V253000 · Vehicle Speed Control:accelerator Pedal

Jul 13, 2006

ON CERTAIN SPORT UTILITY AND HYBRID VEHICLES, THE TWO RETAINING CLIPS FOR THE DRIVER'S SIDE FORWARD CENTER CONSOLE CAN BECOME LOOSE. IF BOTH CLIPS SEPARATE FROM THE FLOOR CARPET COVER, THE COVER MAY LEAN TOWARD THE ACCELERATOR PEDAL, CAUSING INTERFERENCE WITH THE ACCELERATOR PEDAL ROD.

Consequence & remedy

Consequence: THIS CONDITION MAY INTERFERE WITH THE ACCELERATOR PEDAL RETURNING TO THE IDLE POSITION INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REPLACE THE TWO FLOOR CARPET COVER RETAINING CLIPS FREE OF CHARGE. THE RECALL BEGAN ON JULY 24, 2006, AND SHOULD BE COMPLETED BY EARLY SEPTEMBER 2006. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331 OR LEXUS AT 1-800-255-3987.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

3

DP22005 · Pedestrian Alert Sounds

Opened Jan 27, 2023 · Closed Aug 7, 2023

Status: closed (inferred from source dates) · Electrical System:propulsion System

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.

PE11005 · Hybrid Inverter Failure - Vehicle Stall

Opened Feb 15, 2011 · Closed Jul 20, 2011

Status: closed (inferred from source dates) · Hybrid Propulsion System: Inverter

In a June 29, 2011 letter to NHTSA, Toyota submitted a Defect Information Report regarding a safety recall of certain Toyota Highlander Hybrid and Lexus RX400h vehicles to address a defect condition with the hybrid inverter assembly (NHTSA Recall No. 11V-342).Toyota's letter identified a defect related to inadequately soldered transistors on the Intelligent Power Module (IPM) of some of the subject vehicles that could result in sudden loss of power while driving.Toyota's remedy procedure instructs dealers to inspect the hybrid inverter production number to determine if the inverter contains suspect transistors.If so, the dealer will replace the IPM.The recall covers approximately 45,528 model year (MY) 2006 and 2007 Toyota Highlander Hybrid vehicles manufactured from February 16, 2005 through August 29, 2006 and approximately 36,745 MY 2006 and 2007 Lexus RX400h vehicles manufactured from February 23, 2005 through August 30, 2006.This Preliminary Evaluation is closed.

RQ10003 · Unintended And Uncontrolled Acceleration

Opened Feb 16, 2010 · Closed Mar 1, 2011

Status: closed (inferred from source dates) · Electrical System:software; Vehicle Speed Control:accelerator Pedal

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

Additional source detail variants (6)

Electrical System:software

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

Electrical System:software

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

Electrical System:software

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

Vehicle Speed Control:accelerator Pedal

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

Vehicle Speed Control:accelerator Pedal

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.

Vehicle Speed Control:accelerator Pedal

On February 16, 2010, NHTSA's Office of Defects Investigation (ODI) opened RQ10-003 to determine whether the scope of prior Toyota recalls relating to potential unintended acceleration were sufficiently broad, including, among others, Toyota recalls 07E-082, 09V-388, 10V-017, and 10V-023.NHTSA also requested information regarding potential electronic causes of unintended acceleration in Toyota and Lexus vehicles.I. Pedal Interference from Floor mats, Carpet Covers and Plastic Pads in Carpets.During the RQ10-003 investigation, ODI reviewed a large volume of documents to assess whether additional vehicles should be recalled.Following the agency's analysis, NHTSA requested that Toyota recall additional vehicles.Toyota complied with the agency's request.The details of these recalls are set forth more fully in Toyota's reports to NHTSA pursuant to 49 CFR Part 573.These recalls are as follows:Recall 11V-112: (1) model year (MY) 2004-2006 Toyota Highlander and Highlander Hybrid; and, (2) MY 2004-2007 Lexus RX330,RX350, and RX400h (hybrid model). The total estimated population under this recall is 769,379 vehicles.This recall remedies potential accelerator pedal entrapment caused by a loose floor carpet cover (trim panel). Recall 11V-113: (1) MY 2003-2009 through 2009 Toyota 4Runner; (2) MY 2006-2010 Toyota RAV4; and, (3) MY 2008-2011 Lexus LX570.The total estimated population under this recall is 1,381,000 vehicles.This recall supplements recall 09V-388 and remedies potential accelerator pedal entrapment by an unsecured floor mat.Recall 11V-115: (1) MY 2006-2007 Lexus GS300 (all wheel drive vehicles); and, (2) MY 2006-2007 Lexus GS350 (all wheel drive vehicles). The total estimated population under this recall is 19,647 vehicles.This recall remedies potential accelerator pedal entrapment caused by inadequate clearance between the pedal linkage and a plastic pad embedded in the vehicle's carpet.II. Potential Electronic Causes of Unintended Acceleration.After NHTSA opened RQ10-003, NHTSA launched a ten-month study of potential electronic causes of unintended acceleration in Toyota vehicles.NHTSA launched the study in the spring of 2010 in light of concerns aired in Congressional hearings.NHTSA enlisted engineers at the National Aeronautics and Space Administration (NASA) with expertise in areas such as computer controlled electronic systems, electromagnetic interference and software integrity to assess whether electronic systems or electromagnetic interference played a role in incidents of unintended acceleration in Toyota vehicles.That study has concluded.Two reports are associated with the study and are available on NHTSA's website.NASA's report is entitled Technical Support to the National Highway Traffic Safety Administration (NHTSA) on the Reported Toyota Motor Corporation (TMC) Unintended Acceleration (UA) Investigation, NESC Assessment No. TI-10-00618 (Jan. 18, 2011).NHTSA's report is entitled Technical Assessment of Toyota Electronic Throttle Control (ETC) Systems (Feb. 2011).Both reports should be read in conjunction with each other. As stated in its report, NASA did not find an electronic cause of large throttle openings that can result in unintended acceleration incidents. NHTSA did not find a vehicle-based cause of unintended acceleration incidents other than the physical pedal interference causes that are being addressed by Toyota's recalls. This RQ is closed.