← New search

2011 Nissan Leaf

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2011 Nissan Leaf do not stand out strongly from the model-year median of 55.

About this comparison →

How this year compares

Owner complaints by model year

Other model years Selected year
Compare all Leaf years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

76 reports with mileage · 19 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.

  • Air Bags. Review the 35 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 29 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

5 crash reports0 fire reports3 injury reports

What owners actually said

95 reports
73,300 miles · May 15, 2020
Electrical SystemFuel/propulsion System

I RECENTLY PURCHASED A 2011 NISSAN LEAF VEHICLE FROM A PRIVATE PARTY. I QUICKLY NOTICED THAT MY BATTERY CAPACITY WAS AT 5 BARS AND THE VEHICLE HAS 73300 MILES. I ALSO NOTICED THE EV SYSTEM WARNING LIGHT WAS ON. I TOOK THE CAR TO MY LOCAL NISSAN DEALER AND LET THEM KNOW THAT I WAS GOING TO NEED A NEW BATTERY BUT WANTED TO KNOW TH…

Read full complaint

I RECENTLY PURCHASED A 2011 NISSAN LEAF VEHICLE FROM A PRIVATE PARTY. I QUICKLY NOTICED THAT MY BATTERY CAPACITY WAS AT 5 BARS AND THE VEHICLE HAS 73300 MILES. I ALSO NOTICED THE EV SYSTEM WARNING LIGHT WAS ON. I TOOK THE CAR TO MY LOCAL NISSAN DEALER AND LET THEM KNOW THAT I WAS GOING TO NEED A NEW BATTERY BUT WANTED TO KNOW THE HISTORY OF THE VEHICLES BATTERY BECAUSE I BELIEVE THAT THE DEGRADATION OF THE VEHICLES BATTERY WOULD FALL INTO THE SEVERE CATEGORY AND BECAUSE THE VEHICLE WAS IN BETWEEN OWNERS AT THE TIME NO ONE TOOK IT IN FOR A BATTERY REPLACEMENT. CURRENTLY IN 2020 THE 2011 VEHICLE IS AT 5 BARS MEANING THAT IF THE BATTERY ONLY LOST ONE BAR IN THE LAST YEAR THE BATTERY WOULD HAVE TO HAVE LOST MORE THAN 50% CAPACITY WITHIN THE TIMEFRAME THAT IT WOULD HAVE BEEN COVERED UNDER THE 8 YR/100,000MILES EXTENDED WARRANTY. THEY WOULD NOT PROVIDE ME WITH ANY VEHICLE BATTERY INFORMATION ALTHOUGH THE REPRESENTATIVE OF THE DEALER DID CONFIRM THAT THE WARRANTY WOULD HAVE BEEN IN EFFECT LAST YEAR. THEY THEN QUOTED ME $6600 FOR A BATTERY REPLACEMENT. AFTER RESEARCHING I FOUND A LETTER FROM NISSAN WHICH STATES THAT THE VEHICLE WARRANTY WOULD BE EFFECTIVE FOR 2011 MODELS WITH IMPLEMENTATION STARTING SOMETIME IN SPRING OF 2013. NISSAN SO FAR IS NOT WILLING TO REPAIR THE BATTERY OR ASSIST IN THE REPAIR ALTHOUGH THE WARRANTY WOULD HAVE COVERED THIS ISSUE. THE VEHICLE HAS COME CLOSE TO TURNING OFF WHILE I'VE BEEN ON THE ROAD. I AM AFRAID OF MY CARS BATTERY DYING WHILE I'M ON THE ROAD. IT'S MY ONLY VEHICLE. *TR

NHTSA ODI #11324686

108,000 miles · Feb 25, 2020
Air Bags

AIR BAG LIGHT FLASHES INDICATING AIR BAG SYSTEM INOPERATIVE. IT CAN BE RESET BY RECYCLING THE CAR ON/OFF 3 TIME WITHIN CERTAIN TIME LIMITS. THE LIGHT STARTS FLASHING AGAIN WITHIN ABOUT 5-20 MILES OF DRIVING. SAME PROBLEM ON OTHER NISSAN LEAFS THAT WERE PREVIOUSLY RECALLED. NISSAN DEALER WANTS $250 AND CHANGE TO DIAGNOSE THE …

Read full complaint

AIR BAG LIGHT FLASHES INDICATING AIR BAG SYSTEM INOPERATIVE. IT CAN BE RESET BY RECYCLING THE CAR ON/OFF 3 TIME WITHIN CERTAIN TIME LIMITS. THE LIGHT STARTS FLASHING AGAIN WITHIN ABOUT 5-20 MILES OF DRIVING. SAME PROBLEM ON OTHER NISSAN LEAFS THAT WERE PREVIOUSLY RECALLED. NISSAN DEALER WANTS $250 AND CHANGE TO DIAGNOSE THE PROBLEM AND THEN TELL ME WHAT THE SOLUTION IS, BUT EVERYBODY ALREADY KNOWS THE SOLUTION IN A FEW THOUSAND DOLLARS TO REPLACE THE PASSENGER SEAT AND SENSOR. THE NISSAN CUSTOMER AFFAIRS OFFICE INSISTS THAT I PAY THE DIAGNOSIS FEE DESPITE THE FACT THAT THE DASH BOARD LIGHT ALREADY DIAGNOSES THIS PROBLEM, WHICH ALONG WITH THE KNOW HISTORY OF NISSAN LEAF CLEARLY POINTS TO THE KNOWN PROBLEM. NISSAN CUSTOMER AFFAIRS SAYS "WE WILL CONSIDER GOOD WILL ASSISTANCE" - AFTER I PAY THE DIAGNOSIS, BUT LATER IN THE CALL NOTED THAT THE CAR IS OUT OF WARRANTY SO IT IS CLEAR NO GOOD WILL ASSISTANCE IS BEING CONSIDERED. THE DEALER SERVICE MANAGER (HAYWARD) TELLS ME THAT HE HAS HAD A NUMBER OF LEAFS IN WITH THE AIRBAG LIGHT FLASHING AND IT COULD BE "ANYTHING FROM A LOOSE CONNECTOR TO THE WIRING HARNESS," WHICH INTERESTINGLY IS A SET OF POSSIBILITIES THAT EXCLUDES THE SENSOR/SEAT REPLACEMENT WHICH IS THE WELL KNOWN FIX. THIS IS A SAFETY ISSUE THAT IS NISSAN'S RESPONSIBILITY. PLEASE RECALL THIS VEHICLE. THANKS.

NHTSA ODI #11311406

60,000 miles · Jan 9, 2020
Service Brakes

THE BRAKES MALFUNCTION AT LOW SPEEDS, BUT ARE NOT INCLUDED IN A RECALL PROGRAM. NISSAN HAS NOT HELPED AND DOES NOT RESPOND TO EMAILS OR QUESTIONS ON TWITTER. AT LOW SPEEDS THE BRAKES WILL SPORADICALLY ENGAGE AND DISENGAGE WITH REGENERATIVE BRAKING ENABLED. THEY WILL SOMETIMES CATCH WHICH CAUSES SUDDEN STOPPING OR SKIDDING IN HAZ…

Read full complaint

THE BRAKES MALFUNCTION AT LOW SPEEDS, BUT ARE NOT INCLUDED IN A RECALL PROGRAM. NISSAN HAS NOT HELPED AND DOES NOT RESPOND TO EMAILS OR QUESTIONS ON TWITTER. AT LOW SPEEDS THE BRAKES WILL SPORADICALLY ENGAGE AND DISENGAGE WITH REGENERATIVE BRAKING ENABLED. THEY WILL SOMETIMES CATCH WHICH CAUSES SUDDEN STOPPING OR SKIDDING IN HAZARDOUS CONDITIONS. THEY WILL ALSO NOT ENGAGE UNTIL THEY ARE PRESSED EXTREMELY HARD WHICH WILL ALSO CAUSE SUDDEN BRAKING AND CAN BE HAZARDOUS IN TRAFFIC OR HAZARDOUS CONDITIONS. I'VE BEEN ATTEMPTING TO REACH NISSAN TO RESOLVE THE ISSUE, BUT THEY DO NOT RESPOND. THIS IS AN ONGOING ISSUE THAT MAKES THE VEHICLE DANGEROUS TO DRIVE AT TIMES.

NHTSA ODI #11298175

Mileage unknown · Dec 20, 2019
Air Bags

PASSENGER AIR BAG HAS SHUT OFF. DEALER RAN A DIAGNOSTIC TEST AND SAID I NEED A NEW PASSENGER SEAT AT A COST OF $3,182. CURRENT FAULT CODE IS B1018.

NHTSA ODI #11290303

30,000 miles · Dec 11, 2019
Service Brakes

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. WHILE DRIVING 55 MPH DOWN A MOUNTAIN, THERE WAS INSUFFICIENT BRAKING ABILITY AND THE VEHICLE WAS UNCONTROLLABLE. ADDITIONALLY, THE HILL DESCENT ASSIST FAILED TO ENGAGE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO VALLEY NISSAN OF STAUNTON (297 LEE JACKSON HWY, S…

Read full complaint

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. WHILE DRIVING 55 MPH DOWN A MOUNTAIN, THERE WAS INSUFFICIENT BRAKING ABILITY AND THE VEHICLE WAS UNCONTROLLABLE. ADDITIONALLY, THE HILL DESCENT ASSIST FAILED TO ENGAGE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO VALLEY NISSAN OF STAUNTON (297 LEE JACKSON HWY, STAUNTON, VIRGINIA 24401, (540) 213-9600) WHERE IT WAS DIAGNOSED THAT THE REGENERATIVE BRAKING WAS NOT RESPONSIVE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND DID NOT ASSIST. THE CONTACT STATED THAT ADDITIONAL TESTING SHOULD BE PERFORMED ON ELECTRIC VEHICLES. THE FAILURE MILEAGE WAS 30,000.

NHTSA ODI #11288434

58,800 miles · Dec 4, 2019
Air Bags

THE AIRBAG WARNING LIGHT AND DANGER SYMBOL BEGAN FLASHING RECENTLY. TOOK THE CAR TO THE DEALERSHIP AND THEY SAID THE AIRBAG SENSOR IN THE SEAT FAILED AND NEEDED TO BE REPLACED AND THE AIRBAGS WOULD NOT FUNCTION UNTIL THE REPAIR WAS COMPLETED. THIS VEHICLE HAS UNDER 60,000 MILES ON IT AND THE REPAIR PART COSTS NEARLY $3000 WHIC…

Read full complaint

THE AIRBAG WARNING LIGHT AND DANGER SYMBOL BEGAN FLASHING RECENTLY. TOOK THE CAR TO THE DEALERSHIP AND THEY SAID THE AIRBAG SENSOR IN THE SEAT FAILED AND NEEDED TO BE REPLACED AND THE AIRBAGS WOULD NOT FUNCTION UNTIL THE REPAIR WAS COMPLETED. THIS VEHICLE HAS UNDER 60,000 MILES ON IT AND THE REPAIR PART COSTS NEARLY $3000 WHICH IS ABOVE THE KBB VALUE OF THE VEHICLE. THERE WAS NO INCIDENT TO REPORT, JUST A FAILURE ON THE VEHICLE.

NHTSA ODI #11287002

65,581 miles · Nov 18, 2019
Air Bags

ILLUMINATED AIRBAG WARNING LIGHTS FOR FRONT PASSENGER SEATS, DIAGNOSED BY NISSAN DEALER AS A FAILED SENSOR. WAS TOLD THE WHOLE FRONT PASSENGER SIDE SEAT BOTTOM WOULD NEED TO BE REPLAED (ESTIMATE $3,185.61). ALSO TOLD THAT THE FAILURE OF THIS SENSOR MEANT THAT ALL AIRBAGS WERE DEACTIVATED.

NHTSA ODI #11280868

Mileage unknown · Jul 25, 2019
Air Bags

2011 NISSAN LEAF. CONSUMER WRITES IN REGARDS TO DEFECTIVE OCCUPANT SEAT SENSOR. *LD *DT *DT *JS*DT *JS*DT CONSUMER STATED I WANTED TO LET YOU KNOW THAT I HEARD FROM THE NISSAN DEALERSHIP LAST NIGHT (THURSDAY) AND AM TOLD THE REPAIR HAS BEEN COMPLETED. I PLAN TO PICK UP THE CAR TONIGHT. THE LOCAL DEALER WAS NOT SURE WHAT BECAME…

Read full complaint

2011 NISSAN LEAF. CONSUMER WRITES IN REGARDS TO DEFECTIVE OCCUPANT SEAT SENSOR. *LD *DT *DT *JS*DT *JS*DT CONSUMER STATED I WANTED TO LET YOU KNOW THAT I HEARD FROM THE NISSAN DEALERSHIP LAST NIGHT (THURSDAY) AND AM TOLD THE REPAIR HAS BEEN COMPLETED. I PLAN TO PICK UP THE CAR TONIGHT. THE LOCAL DEALER WAS NOT SURE WHAT BECAME OF THE DEFECTIVE SEAT/SENSOR AND SAID STAFF FROM NISSAN DID ALL THE WORK, NOT THE LOCAL DEALERSHIP.*JB CONSUMER UPDATE, I HEARD FROM MY LOCAL NISSAN DEALER AND WAS TOLD THEY HAVE AGREED TO REPLACE THE SEAT.*JB INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR*JB

NHTSA ODI #11234415

67,000 miles · May 14, 2019
Air Bags

THE PASSENGER SEAT OCCUPANCY SENSOR IS FAILING. THIS CAUSES THE PASSENGER AIRBAG TO TURN OFF AND THE WARNING LIGHTS TO FLASH ON THE DASH. THIS CONDITION MAY ALSO DISABLE THE DRIVERS AIRBAG. NISSAN ESTIMATE TO REPAIR IS OVER $3200, THE ENTIRE SEAT CUSHION ASSEMBLY MUST BE REPLACED. THIS IS OVER HALF THE VALUE OF THE CAR. NISSAN …

Read full complaint

THE PASSENGER SEAT OCCUPANCY SENSOR IS FAILING. THIS CAUSES THE PASSENGER AIRBAG TO TURN OFF AND THE WARNING LIGHTS TO FLASH ON THE DASH. THIS CONDITION MAY ALSO DISABLE THE DRIVERS AIRBAG. NISSAN ESTIMATE TO REPAIR IS OVER $3200, THE ENTIRE SEAT CUSHION ASSEMBLY MUST BE REPLACED. THIS IS OVER HALF THE VALUE OF THE CAR. NISSAN HAS RECALLED OTHER YEARS AND MODELS FOR THE SAME OR SIMILAR ISSUE, BUT NOT THE 2011 MODEL. THIS SERIOUS, KNOWN SAFETY DEFECT SHOULD BE ADDRESSED BY NISSAN IN A RESPONSIBLE MANNER. THE OCS SYSTEM CAN BE RESET, BUT THE TROUBLE APPEARS AGAIN IN A FEW DAYS. IT USUALLY APPEARS ON VEHICLE START-UP. THE PASSENGER SEAT MAY BE OCCUPIED, OR NOT.

NHTSA ODI #11207486

43,749 miles · Apr 13, 2019
Air Bags

PASSENGER SEAT AIRBAG SENSOR FAILED. SAME ISSUE AS OTHER COMPLAINTANTS. VEHICLE STATIONARY. THIS IS THE SAME ISSUE AS AN EXISTING RECALL FOR LATER YEAR MODELS. WHEN IS THIS RECALL GOING TO BE EXTENDED TO EARLIER YEARS? THIS IS A SAFETY ISSUE AND NISSAN IS TRYING TO CHARGE OVER $2K TO FIX.

NHTSA ODI #11196006

Official recalls

0

No recalls in this snapshot.

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.

PE19015 · Front Occupant Classification System Mat

Opened Oct 9, 2019 · Closed Jun 1, 2020

Status: closed (inferred from source dates) · Air Bags; Air Bags:frontal; Air Bags:sensor:occupant Classification

Preliminary Evaluation (PE) 19-015 was opened as a result of Defect Petition (DP) 19-002 which alleged that model year (MY) 2011 and 2012 Nissan Leaf were affected by the same defect addressed in an earlier recall, NHTSA Safety Recall 16V-244, but were not included in the scope of that recall.NHTSA 16V-244 involved a defect in the Occupant Classification System, a system intended to suppress deployment of the passenger's frontal air bag under certain specific conditions. Although the DP19-002 analysis determined the allegation that earlier MY Leaf vehicles should have been included in 16V-244 was not founded, the Office of Defects Investigation nonetheless granted the petition and commenced this investigation into the 2011 and 2012 Leaf since OCS failures were reportedly occurring in these vehicles. Further details on DP19-002 can be found at NHTSA.gov.On October 25, 2019, ODI sent an information request letter to Nissan North America (Nissan) requesting pertinent information on the subject 2011 and 2012 Leaf. Nissan provided its response on December 13, 2019. ODI has reviewed the information Nissan provided as well as new reports submitted to NHTSA's Vehicle Owner Questionnaire database. Based on review of all available information, and at this time, ODI has identified evidence supporting that a total of 76 subject vehicles likely experienced a failure of the subject passenger seat OCS mat. The count represents an incidence rate of about 0.4% on subject vehicles that average 8 to 9 years in service.Consistent with Nissan's explanation of how the subject OCS was intended to function, ODI's review of the reports indicates that when an OCS mat failure occurs, two different warning indicators appear on the instrument panel. The warnings provide clear and unambiguous notice to occupants that an OCS problem has been detected, and the owner's manual provides further information regarding the meaning and consequences of the detected failure, as well as advice to seek service. Additionally the OCS will store a diagnostic trouble code to aid service technician diagnosis, and the occupant warnings remain present until the underlying failure has been corrected.In its responses to ODI, Nissan also provided its assessment of the alleged defect in the subject vehicles, stating that it does not believe that an unreasonable risk to safety exists. Nissan states that its assessment of failed OCS mats recently collected from the field showed that external factors (e.g., damage from foreign objects) were responsible for the failures, rather than a design or manufacturing defect. Nissan also cited clear visual warnings and low incidence rates occurring in comparatively older vehicles as factors in its determination that a recall was not warranted. Lastly Nissan noted that most of the complaints received for this issue involved a high customer expense for the cost of repair for the OCS system, which is consistent with ODI's observations. Nissan is apparently considering a reduction in repair part cost as a means to address the customer satisfaction aspect of these complaints.Based on the analysis conducted, this investigation will be closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. NHTSA reserves the right take additional actions if warranted by future circumstances.The 20 ODI numbers cited above can be reviewed at NHTSA.gov under the following identification (ODI) numbers:11176324, 11193091, 11286687, 11290303, 11152569, 11207486, 11180021(duplicate of 11103556), 11103556, 11196006, 11287002, 11101830, 11193208, 11256669, 11172159, 11282156, 11102456, 11123812,

Additional source detail variants (3)

Air Bags:frontal

Preliminary Evaluation (PE) 19-015 was opened as a result of Defect Petition (DP) 19-002 which alleged that model year (MY) 2011 and 2012 Nissan Leaf were affected by the same defect addressed in an earlier recall, NHTSA Safety Recall 16V-244, but were not included in the scope of that recall.NHTSA 16V-244 involved a defect in the Occupant Classification System, a system intended to suppress deployment of the passenger's frontal air bag under certain specific conditions. Although the DP19-002 analysis determined the allegation that earlier MY Leaf vehicles should have been included in 16V-244 was not founded, the Office of Defects Investigation nonetheless granted the petition and commenced this investigation into the 2011 and 2012 Leaf since OCS failures were reportedly occurring in these vehicles. Further details on DP19-002 can be found at NHTSA.gov.On October 25, 2019, ODI sent an information request letter to Nissan North America (Nissan) requesting pertinent information on the subject 2011 and 2012 Leaf. Nissan provided its response on December 13, 2019. ODI has reviewed the information Nissan provided as well as new reports submitted to NHTSA's Vehicle Owner Questionnaire database. Based on review of all available information, and at this time, ODI has identified evidence supporting that a total of 76 subject vehicles likely experienced a failure of the subject passenger seat OCS mat. The count represents an incidence rate of about 0.4% on subject vehicles that average 8 to 9 years in service.Consistent with Nissan's explanation of how the subject OCS was intended to function, ODI's review of the reports indicates that when an OCS mat failure occurs, two different warning indicators appear on the instrument panel. The warnings provide clear and unambiguous notice to occupants that an OCS problem has been detected, and the owner's manual provides further information regarding the meaning and consequences of the detected failure, as well as advice to seek service. Additionally the OCS will store a diagnostic trouble code to aid service technician diagnosis, and the occupant warnings remain present until the underlying failure has been corrected.In its responses to ODI, Nissan also provided its assessment of the alleged defect in the subject vehicles, stating that it does not believe that an unreasonable risk to safety exists. Nissan states that its assessment of failed OCS mats recently collected from the field showed that external factors (e.g., damage from foreign objects) were responsible for the failures, rather than a design or manufacturing defect. Nissan also cited clear visual warnings and low incidence rates occurring in comparatively older vehicles as factors in its determination that a recall was not warranted. Lastly Nissan noted that most of the complaints received for this issue involved a high customer expense for the cost of repair for the OCS system, which is consistent with ODI's observations. Nissan is apparently considering a reduction in repair part cost as a means to address the customer satisfaction aspect of these complaints.Based on the analysis conducted, this investigation will be closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. NHTSA reserves the right take additional actions if warranted by future circumstances.The 20 ODI numbers cited above can be reviewed at NHTSA.gov under the following identification (ODI) numbers:11176324, 11193091, 11286687, 11290303, 11152569, 11207486, 11180021(duplicate of 11103556), 11103556, 11196006, 11287002, 11101830, 11193208, 11256669, 11172159, 11282156, 11102456, 11123812,

Air Bags

Preliminary Evaluation (PE) 19-015 was opened as a result of Defect Petition (DP) 19-002 which alleged that model year (MY) 2011 and 2012 Nissan Leaf were affected by the same defect addressed in an earlier recall, NHTSA Safety Recall 16V-244, but were not included in the scope of that recall.NHTSA 16V-244 involved a defect in the Occupant Classification System, a system intended to suppress deployment of the passenger's frontal air bag under certain specific conditions. Although the DP19-002 analysis determined the allegation that earlier MY Leaf vehicles should have been included in 16V-244 was not founded, the Office of Defects Investigation nonetheless granted the petition and commenced this investigation into the 2011 and 2012 Leaf since OCS failures were reportedly occurring in these vehicles. Further details on DP19-002 can be found at NHTSA.gov.On October 25, 2019, ODI sent an information request letter to Nissan North America (Nissan) requesting pertinent information on the subject 2011 and 2012 Leaf. Nissan provided its response on December 13, 2019. ODI has reviewed the information Nissan provided as well as new reports submitted to NHTSA's Vehicle Owner Questionnaire database. Based on review of all available information, and at this time, ODI has identified evidence supporting that a total of 76 subject vehicles likely experienced a failure of the subject passenger seat OCS mat. The count represents an incidence rate of about 0.4% on subject vehicles that average 8 to 9 years in service.Consistent with Nissan's explanation of how the subject OCS was intended to function, ODI's review of the reports indicates that when an OCS mat failure occurs, two different warning indicators appear on the instrument panel. The warnings provide clear and unambiguous notice to occupants that an OCS problem has been detected, and the owner's manual provides further information regarding the meaning and consequences of the detected failure, as well as advice to seek service. Additionally the OCS will store a diagnostic trouble code to aid service technician diagnosis, and the occupant warnings remain present until the underlying failure has been corrected.In its responses to ODI, Nissan also provided its assessment of the alleged defect in the subject vehicles, stating that it does not believe that an unreasonable risk to safety exists. Nissan states that its assessment of failed OCS mats recently collected from the field showed that external factors (e.g., damage from foreign objects) were responsible for the failures, rather than a design or manufacturing defect. Nissan also cited clear visual warnings and low incidence rates occurring in comparatively older vehicles as factors in its determination that a recall was not warranted. Lastly Nissan noted that most of the complaints received for this issue involved a high customer expense for the cost of repair for the OCS system, which is consistent with ODI's observations. Nissan is apparently considering a reduction in repair part cost as a means to address the customer satisfaction aspect of these complaints.Based on the analysis conducted, this investigation will be closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. NHTSA reserves the right take additional actions if warranted by future circumstances.The 20 ODI numbers cited above can be reviewed at NHTSA.gov under the following identification (ODI) numbers:11176324, 11193091, 11286687, 11290303, 11152569, 11207486, 11180021(duplicate of 11103556), 11103556, 11196006, 11287002, 11101830, 11193208, 11256669, 11172159, 11282156, 11102456, 11123812,

Air Bags:sensor:occupant Classification

Preliminary Evaluation (PE) 19-015 was opened as a result of Defect Petition (DP) 19-002 which alleged that model year (MY) 2011 and 2012 Nissan Leaf were affected by the same defect addressed in an earlier recall, NHTSA Safety Recall 16V-244, but were not included in the scope of that recall.NHTSA 16V-244 involved a defect in the Occupant Classification System, a system intended to suppress deployment of the passenger's frontal air bag under certain specific conditions. Although the DP19-002 analysis determined the allegation that earlier MY Leaf vehicles should have been included in 16V-244 was not founded, the Office of Defects Investigation nonetheless granted the petition and commenced this investigation into the 2011 and 2012 Leaf since OCS failures were reportedly occurring in these vehicles. Further details on DP19-002 can be found at NHTSA.gov.On October 25, 2019, ODI sent an information request letter to Nissan North America (Nissan) requesting pertinent information on the subject 2011 and 2012 Leaf. Nissan provided its response on December 13, 2019. ODI has reviewed the information Nissan provided as well as new reports submitted to NHTSA's Vehicle Owner Questionnaire database. Based on review of all available information, and at this time, ODI has identified evidence supporting that a total of 76 subject vehicles likely experienced a failure of the subject passenger seat OCS mat. The count represents an incidence rate of about 0.4% on subject vehicles that average 8 to 9 years in service.Consistent with Nissan's explanation of how the subject OCS was intended to function, ODI's review of the reports indicates that when an OCS mat failure occurs, two different warning indicators appear on the instrument panel. The warnings provide clear and unambiguous notice to occupants that an OCS problem has been detected, and the owner's manual provides further information regarding the meaning and consequences of the detected failure, as well as advice to seek service. Additionally the OCS will store a diagnostic trouble code to aid service technician diagnosis, and the occupant warnings remain present until the underlying failure has been corrected.In its responses to ODI, Nissan also provided its assessment of the alleged defect in the subject vehicles, stating that it does not believe that an unreasonable risk to safety exists. Nissan states that its assessment of failed OCS mats recently collected from the field showed that external factors (e.g., damage from foreign objects) were responsible for the failures, rather than a design or manufacturing defect. Nissan also cited clear visual warnings and low incidence rates occurring in comparatively older vehicles as factors in its determination that a recall was not warranted. Lastly Nissan noted that most of the complaints received for this issue involved a high customer expense for the cost of repair for the OCS system, which is consistent with ODI's observations. Nissan is apparently considering a reduction in repair part cost as a means to address the customer satisfaction aspect of these complaints.Based on the analysis conducted, this investigation will be closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. NHTSA reserves the right take additional actions if warranted by future circumstances.The 20 ODI numbers cited above can be reviewed at NHTSA.gov under the following identification (ODI) numbers:11176324, 11193091, 11286687, 11290303, 11152569, 11207486, 11180021(duplicate of 11103556), 11103556, 11196006, 11287002, 11101830, 11193208, 11256669, 11172159, 11282156, 11102456, 11123812,

DP19002 · Front Occupant Classification System Mat

Opened Aug 16, 2019 · Closed Oct 16, 2019

Status: closed (inferred from source dates) · Air Bags:sensor:occupant Classification

A defect petition (see DP19-002) was received July 23, 2019 alleging that the occupant classification system (OCS) sensor (mat) in model year (MY) 2011 Nissan Leaf vehicles is defective and affects the proper deployment of the passenger front air bag. The petitioner provided a list of potentially related NHTSA reports and noted a Nissan recall involving later MY Leaf vehicles with OCS defect. NHTSA is granting the petition and opening a preliminary evaluation in response, please see PE19-015.Since receiving the defect petition, the Office of Defects Investigation (ODI) has determined that the MY 2011 and 2012 Leaf share a common OCS design, both using the same sensor mat for passenger presence sensing. Starting in MY 2013, Leaf OCS was changed to a design using a different sensing system, one that did not use the mat present in prior model year, Nissan Leaf. While MY 2013-2016 Leaf vehicles were recalled for an OCS defect under recall 16V-244, a recall influenced by ODI investigation EA15-004, earlier MY Leaf vehicles were not included because they were not affected by the particular defect involved in that recall.ODI identified and reviewed 13 vehicle owner questionnaire (VOQ) reports in its database, one of which is a duplicate, involving MY 2011 and 2012 Leaf vehicles that allege a problem with the OCS. The VOQs indicate that an OCS warning light illuminated at which point the vehicle was diagnosed and it was determined the sensor mat was the cause of the OCS problem. Most of the VOQs also noted the high cost of repair, which apparently involves replacement of the passenger front seat, according to complainants. None of the VOQs allege a problem with the performance of the passenger air bag, an injury, or a fatality due to the failure of the OCS.During the evaluation of this petition, ODI did not request information from Nissan regarding the complaint data in its possession, and accordingly the manufacturer complaint counts shown above are marked as not applicable. ODI will request this information during the upcoming investigation.The ODI reports cited above can be reviewed at NHTSA.gov under the following identification (VOQ) numbers: 11234415, 11207486, 11196006, 11193208, 11180021, 11176324, 11172159, 11152569, 11123812, 11103556 (duplicate of 11180021), 11102456, 11101830, 11052546.