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2009 Nissan Murano

Owner reports · Recalls · Investigations

More warning signs than most Murano years

Owner complaints for the 2009 Nissan Murano are substantially higher than the model-year median of 110.

About this comparison →

When problems were reported

Mileage at the reported incident

526 reports with mileage · 109 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 253 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 91 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 83 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

24 crash reports4 fire reports13 injury reports

What owners actually said

635 reports
94,000 miles · Jul 19, 2024
EngineFire

The contact owned a 2009 Nissan Murano. The contact stated that while the vehicle was parked in the apartment building parking lot and turned off for approximately five hours, the vehicle caught fire and was destroyed. The fire department was called to the scene and extinguished the flames. The cause of the fire was not determin…

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The contact owned a 2009 Nissan Murano. The contact stated that while the vehicle was parked in the apartment building parking lot and turned off for approximately five hours, the vehicle caught fire and was destroyed. The fire department was called to the scene and extinguished the flames. The cause of the fire was not determined. A fire report was taken at the scene that indicated the fire originated in the engine compartment. Two parked vehicles were also damaged during the incident. The contact indicated that the engine was recently replaced at the dealer days before the incident. The manufacturer and local dealer were notified of the failure. The failure mileage was 94,000.

NHTSA ODI #11603339

76,000 miles · Jul 15, 2024
Service Brakes, Hydraulic

The contact owns a 2009 Nissan Murano. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard, with the ABS warning light illuminated. The vehicle was towed to the dealer, where it was diagnosed with brake failure. The contact was informed that the brake pads neede…

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The contact owns a 2009 Nissan Murano. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard, with the ABS warning light illuminated. The vehicle was towed to the dealer, where it was diagnosed with brake failure. The contact was informed that the brake pads needed to be replaced. The vehicle was repaired but the failure recurred. The dealer was contacted; however, the vehicle was not repaired after the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 76,000.

NHTSA ODI #11602426

Mileage unknown · Jul 7, 2024
Air BagsService BrakesWheels

Falla en abs y ruedas riesgo al frenar tarda demasiado luces de abs vdc off AWD y tpms

NHTSA ODI #11599811

160,000 miles · Jul 3, 2024
Structure

The contact owns a 2009 Nissan Murano. The contact stated that while inspecting the vehicle, it was discovered that the entire subframe was rusted. The cause of the failure was not yet determined. The vehicle was not repaired. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The fail…

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The contact owns a 2009 Nissan Murano. The contact stated that while inspecting the vehicle, it was discovered that the entire subframe was rusted. The cause of the failure was not yet determined. The vehicle was not repaired. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 160,000.

NHTSA ODI #11598543

Mileage unknown · Jun 14, 2024
Service BrakesUnknown Or OtherWheels

Abs/vdc off/awd en el tablero

NHTSA ODI #11594417

Mileage unknown · Jun 14, 2024
Service BrakesSuspensionWheels

Abs

NHTSA ODI #11594336

Mileage unknown · May 26, 2024
Suspension

While driving the car, you could hear a squeaking noise coming from the rear passenger side of the car. It would get louder if you hit a bump. It took mechanics awhile to figure out what it was but it turned out to be the rear subframe had rusted through on the rear passenger side. The rest of the subframe is not rusted. How…

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While driving the car, you could hear a squeaking noise coming from the rear passenger side of the car. It would get louder if you hit a bump. It took mechanics awhile to figure out what it was but it turned out to be the rear subframe had rusted through on the rear passenger side. The rest of the subframe is not rusted. However, it is now not safe to drive.

NHTSA ODI #11590796

Mileage unknown · May 16, 2024
Power TrainService Brakes

My 2009 Nissan Murano had a bad battery and starter, after replaced them the ABS/VDC/Slip control light were illuminated and ABS function lost. I searched online and found a lot of the Murano owners had the same issue by just replacing a battery then got these DTCs. At the end we found Nissan know this issue and issue a TSB for …

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My 2009 Nissan Murano had a bad battery and starter, after replaced them the ABS/VDC/Slip control light were illuminated and ABS function lost. I searched online and found a lot of the Murano owners had the same issue by just replacing a battery then got these DTCs. At the end we found Nissan know this issue and issue a TSB for repair with customer's expense. They know this is factory issue but not recall it or even not notify their customer, it's safety issue and still need the customer to search it and repair with the customer's money (to pay their faults). TSB: NTB10-113a

NHTSA ODI #11589029

Mileage unknown · Apr 24, 2024
Unknown Or Other

Car has 120 000. Miles on it. Subframe is completely rotten and broken. UNDRIVEABLE!!!!!! WELL KNOW ON 2009 MURANO'S. What can Nissan do about this?

NHTSA ODI #11584981

Mileage unknown · Mar 12, 2024
Service Brakes, Air

See attached document for complaint

NHTSA ODI #11576772

Official recalls

4

18V916000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Dec 19, 2018

Nissan of North America, Inc (Nissan) is recalling certain 2009 Murano vehicles. The valves within the ABS Hydraulic Control Units (HCU) may react with brake fluids containing specific corrosion preventative additives. This reaction may cause the valves to not close properly.

Consequence & remedy

Consequence: If the valves do not properly close, additional brake pedal travel may be required to stop the vehicle, increasing the risk of a crash.

Remedy: Nissan has notified owners, and dealers will flush the brake system with DOT 4 fluid. The HCU will then be tested to detect a possible stuck valve condition. If necessary, the HCU will be replaced, free of charge. The recall began February 7, 2019. Owners may contact Nissan customer service at 1-800-867-7669.

09V393000 · Tires:pressure Monitoring And Regulating Systems

Oct 5, 2009

NISSAN IS RECALLING CERTAIN MODEL YEAR 2008-2010 VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, IOWA, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MARYLAND, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WASHINGTON D.C., WEST VIRGINIA AND WISCONSIN. THE MATERIAL IN THE NUT USED TO SECURE THE SENSOR-TRANSMITTER OF THE TIRE PRESSURE MONITORING SYSTEM (TPMS) MAY CORRODE AND POTENTIALLY CRACK IN AREAS WITH HEAVY CONCENTRATIONS OF ROAD SALT. IF THIS OCCURS, THE NUT MAY COME OUT OF THE SENSOR-TRANSMITTER AND THE TPMS LAMP WILL ILLUMINATE.

Consequence & remedy

Consequence: IF THE TPMS LAMP IS DISREGARDED AND THE VEHICLE CONTINUES TO BE DRIVEN IN THIS CONDITION, THE TIRE WILL QUICKLY LOSE AIR PRESSURE AT A CONSISTENT RATE RESULTING IN A FLAT TIRE INCREASING THE RISK OF A CRASH.

Remedy: THE DEALER WILL REPLACE THE TPMS NUT WITH A NEW, MORE ROBUST NUT. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN ON OR BEFORE NOVEMBER 9, 2009. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261 AND INFINITI AT 1-800-662-6200.

08V521000 · Air Bags; Electrical System:software

Oct 7, 2008

NISSAN IS RECALLING 204,361 MY 2007-2008 ALTIMA, ALTIMA HYBRID, 350Z, 350Z ROADSTER, MY 2008 ALTIMA COUPE, ROGUE, MY 2009 MURANO, AND INFINITI MY 2007-2008 G35 SEDAN, MY 2008 G37 COUPE AND EX35 PASSENGER VEHICLES EQUIPPED WITH CONTINENTAL AUTOMOTIVE SYSTEMS' OCCUPANT CLASSIFICATION SYSTEM (OCS) CONTROL UNITS. A VARISTOR IN THE OCS CONTROL UNIT LOCATED IN THE PASSENGER SEAT CUSHION MAY HAVE BEEN MANUFACTURED OUT OF SPECIFICATION. UNDER CERTAIN CONDITIONS, THIS COULD CAUSE AN INTERRUPTION OF SIGNAL BETWEEN THE OCS AND THE AIR BAG CONTROL UNIT (ACU).

Consequence & remedy

Consequence: THIS COULD RESULT IN THE PASSENGER AIR BAG BEING SUPPRESSED WHICH COULD FAIL TO PROVIDE ADEQUATE PROTECTION IN THE EVENT OF A CRASH.

Remedy: DEALERS WILL TEST THE SIGNAL BETWEEN THE OCS AND ACU SYSTEMS USING A SPECIAL TOOL TO CHECK THAT IT IS FUNCTIONING AS DESIGNED. IF NECESSARY, THE SEAT CUSHION (CONTAINING OCS HARDWARE) WILL BE REPLACED WITH A NEW ONE MANUFACTURED TO SPECIFICATION. THE RECALL BEGAN ON NOVEMBER 4, 2008. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.

Additional source detail variants (2)

Electrical System:software

NISSAN IS RECALLING 204,361 MY 2007-2008 ALTIMA, ALTIMA HYBRID, 350Z, 350Z ROADSTER, MY 2008 ALTIMA COUPE, ROGUE, MY 2009 MURANO, AND INFINITI MY 2007-2008 G35 SEDAN, MY 2008 G37 COUPE AND EX35 PASSENGER VEHICLES EQUIPPED WITH CONTINENTAL AUTOMOTIVE SYSTEMS' OCCUPANT CLASSIFICATION SYSTEM (OCS) CONTROL UNITS. A VARISTOR IN THE OCS CONTROL UNIT LOCATED IN THE PASSENGER SEAT CUSHION MAY HAVE BEEN MANUFACTURED OUT OF SPECIFICATION. UNDER CERTAIN CONDITIONS, THIS COULD CAUSE AN INTERRUPTION OF SIGNAL BETWEEN THE OCS AND THE AIR BAG CONTROL UNIT (ACU).

Consequence: THIS COULD RESULT IN THE PASSENGER AIR BAG BEING SUPPRESSED WHICH COULD FAIL TO PROVIDE ADEQUATE PROTECTION IN THE EVENT OF A CRASH.

Remedy: DEALERS WILL TEST THE SIGNAL BETWEEN THE OCS AND ACU SYSTEMS USING A SPECIAL TOOL TO CHECK THAT IT IS FUNCTIONING AS DESIGNED. IF NECESSARY, THE SEAT CUSHION (CONTAINING OCS HARDWARE) WILL BE REPLACED WITH A NEW ONE MANUFACTURED TO SPECIFICATION. THE RECALL BEGAN ON NOVEMBER 4, 2008. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.

Air Bags

NISSAN IS RECALLING 204,361 MY 2007-2008 ALTIMA, ALTIMA HYBRID, 350Z, 350Z ROADSTER, MY 2008 ALTIMA COUPE, ROGUE, MY 2009 MURANO, AND INFINITI MY 2007-2008 G35 SEDAN, MY 2008 G37 COUPE AND EX35 PASSENGER VEHICLES EQUIPPED WITH CONTINENTAL AUTOMOTIVE SYSTEMS' OCCUPANT CLASSIFICATION SYSTEM (OCS) CONTROL UNITS. A VARISTOR IN THE OCS CONTROL UNIT LOCATED IN THE PASSENGER SEAT CUSHION MAY HAVE BEEN MANUFACTURED OUT OF SPECIFICATION. UNDER CERTAIN CONDITIONS, THIS COULD CAUSE AN INTERRUPTION OF SIGNAL BETWEEN THE OCS AND THE AIR BAG CONTROL UNIT (ACU).

Consequence: THIS COULD RESULT IN THE PASSENGER AIR BAG BEING SUPPRESSED WHICH COULD FAIL TO PROVIDE ADEQUATE PROTECTION IN THE EVENT OF A CRASH.

Remedy: DEALERS WILL TEST THE SIGNAL BETWEEN THE OCS AND ACU SYSTEMS USING A SPECIAL TOOL TO CHECK THAT IT IS FUNCTIONING AS DESIGNED. IF NECESSARY, THE SEAT CUSHION (CONTAINING OCS HARDWARE) WILL BE REPLACED WITH A NEW ONE MANUFACTURED TO SPECIFICATION. THE RECALL BEGAN ON NOVEMBER 4, 2008. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.

08V066000 · Air Bags

Feb 12, 2008

NISSAN IS RECALLING 16,365 MY 2008 INFINITI EX35 AND MY 2009 NISSAN MURANO VEHICLES. DUE TO INCORRECT SOFTWARE PROGRAMMING, THE AIR BAG CONTROL UNIT (ACU) MAY CAUSE THE PASSENGER AIR BAG NOT TO OPERATE AS DESIGNED IF THE VEHICLE BATTERY BECOMES SIGNIFICANTLY DISCHARGED.

Consequence & remedy

Consequence: THIS COULD RESULT IN THE PASSENGER AIR BAG NOT INFLATING IN A CRASH IN WHICH IT WAS DESIGNED TO DO SO, AND INCREASING THE RISK OF INJURY.

Remedy: DEALERS WILL REPROGRAM THE ACU IN AFFECTED VEHICLES. THE RECALL BEGAN ON FEBRUARY 19, 2008. OWNERS MAY CONTACT INFINITI AT 1-800-662-6200 OR NISSAN AT 1-800-647-7261.

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

2

EA18001 · Extended Braking Distances

Opened Apr 18, 2018 · Closed Jan 17, 2023

Status: closed (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip

On April 18, 2018, the Office of Defects Investigation (ODI) opened Engineering Analysis (EA) 18-001 to investigate reports of braking concerns in model year (MY) 2009 Nissan Murano vehicles. A failure of the hydraulic control unit (HCU) portion of the antilock brake system (ABS), which involves improper operation of an internal hydraulic control valve(s), can cause extended brake pedal travel and may result in a reduction in overall braking effectiveness. Tier-one supplier Continental manufactured the HCU for Nissan.The corrosion-preventive, zinc coating used on the armatures of the normally closed (NC) valves within ABS HCU may react with brake fluids lacking sufficient corrosion-preventative additives. This reaction can cause the formation of a gelatinous material, which may cause the NC valves to close slowly. Over time, the gel can solidify to an extent such that the spring used to return the valve to the closed position may not be able to overcome the gel buildup, allowing the NC valve to remain open. If any of the four NC valves remains open, fluid will be diverted to one or two accumulator(s). This misdirected fluid has the net effect of causing brake pedal travel to increase, however enough stroke remains in the pedal to generate braking force. Although the hydraulic braking system remains intact and full braking force is maintained once the pedal travels the additional distance, when this condition occurs, the initial increase in brake pedal travel could result in increased stopping distance. An existing Nissan Service Campaign was launched for MY 2009 vehicles built prior to 11/1/2007. After consultation with ODI as part of EA18-001, Nissan decided to expand this population to the full range of MY2009 Murano vehicles. Later Murano vehicles exhibit significantly lower rates of malfunction.During this investigation 156 complaints were identified that related to the braking concern. Within the complainants 2 allege crashes with 4 injuries. The Nissan reports from investigation Information Request letter responses, were similar in content and identified 870 reports with 16 crashes and no injuries.On December 19, 2018, Nissan notified ODI it would conduct a safety recall (18V916) to remedy the ABS modules on certain MY 2009 Nissan Murano vehicles. The remedy procedure involves dealers flushing the brake system with DOT 4 fluid. The HCU will then be tested to detect a possible stuck valve condition. If necessary, the HCU will be replaced. The 2010-14 Murano SUVs outside the recall population and equipped with zinc-coated armatures will be inspected under a service campaign P0A08 using the same procedure as recall 18V916.Continental HCUs with a redesigned armature coating were phased into new vehicle production after December 2014 and do not appear to be experiencing corrosion. The recall action initiated by the manufacturer appears to address the safety risks of concern to ODI. Accordingly, the investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exists on other model or MY vehicles outside of the recall scope. The agency reserves the right to take further action if warranted by the circumstances.For a complete summary of this investigation and related consumer complaints, please see attached closing resume document.

PE17002 · Extended Braking Distances

Opened May 3, 2017 · Closed May 4, 2018

Status: closed (inferred from source dates) · Service Brakes; Service Brakes, Air:antilock; Service Brakes, Air:antilock:control Unit/module

The Office of Defects Investigation (ODI) is closing this Preliminary Evaluation and upgrading to an Engineering Analysis (EA) 18-001.During the PE, ODI requested and reviewed information provided by Nissan including consumer complaints and other field and technical data related to failures of the hydraulic control unit (HCU), an electro-mechanical brake system component that provides antilock braking and other functionality in the subject model year (MY) 2009 Murano.The subject failure of the HCU, which involves improper operation of an internal hydraulic control valve, can cause extended brake pedal travel and may result in a reduction in overall braking effectiveness.Tier-one supplier Continental manufactured the HCU for Nissan.ODI currently recognizes 484 subject vehicle complaints that appear related to the alleged defect.Fourteen crash allegations, with three non-life threatening injuries are under evaluation also.ODI has been monitoring consumer complaints received, and in some cases has obtained suspect HCUs from complainants' vehicles.Recovered HCUs sent to NHTSA's Vehicle Research and Test Center (VRTC) in East Liberty, Ohio are under evaluation, and VRTC has conducted limited vehicle testing also.In a July 28, 2017 submission, Nissan acknowledged that a failure of the HCU can result in increased brake pedal travel during braking.Nissan's analysis of returned parts revealed that a zinc coating used on the normally closed valve assemblies inside the HCU may react with certain brake fluid constituents.The reaction results in the formation of a gelatinous material that can harden with time and prevent the valve from closing after opening in an ABS event.When this occurs, Nissan maintains that the hydraulic brake system remains intact and that full braking is available once the pedal travels an additional distance, about 36 mm according to Nissan.Although still under investigation, Nissan states it has not determined the condition represents an unreasonable risk to motor vehicle safety, citing low rate and vehicle age as additional factors.In March 2018, Nissan began conducting a customer satisfaction campaign on certain MY 2009 Murano to service (flush and replace the brake fluid), and then test and replace the HCU as needed.The campaign is being conducted free of charge to customers.During the EA, ODI will request VRTC continue to evaluate the cause and consequence of HCU failures, including the affects of multi-valve failures.ODI will further study the potential scope of the alleged defect as it understands similar HCUs and brake fluid is used in other MY Muranos, and potentially in other Nissan models as well.ODI notes that improved valve coatings were introduced on Nissan HCUs at some subsequent stage.

Additional source detail variants (3)

Service Brakes, Air:antilock:control Unit/module

The Office of Defects Investigation (ODI) is closing this Preliminary Evaluation and upgrading to an Engineering Analysis (EA) 18-001.During the PE, ODI requested and reviewed information provided by Nissan including consumer complaints and other field and technical data related to failures of the hydraulic control unit (HCU), an electro-mechanical brake system component that provides antilock braking and other functionality in the subject model year (MY) 2009 Murano.The subject failure of the HCU, which involves improper operation of an internal hydraulic control valve, can cause extended brake pedal travel and may result in a reduction in overall braking effectiveness.Tier-one supplier Continental manufactured the HCU for Nissan.ODI currently recognizes 484 subject vehicle complaints that appear related to the alleged defect.Fourteen crash allegations, with three non-life threatening injuries are under evaluation also.ODI has been monitoring consumer complaints received, and in some cases has obtained suspect HCUs from complainants' vehicles.Recovered HCUs sent to NHTSA's Vehicle Research and Test Center (VRTC) in East Liberty, Ohio are under evaluation, and VRTC has conducted limited vehicle testing also.In a July 28, 2017 submission, Nissan acknowledged that a failure of the HCU can result in increased brake pedal travel during braking.Nissan's analysis of returned parts revealed that a zinc coating used on the normally closed valve assemblies inside the HCU may react with certain brake fluid constituents.The reaction results in the formation of a gelatinous material that can harden with time and prevent the valve from closing after opening in an ABS event.When this occurs, Nissan maintains that the hydraulic brake system remains intact and that full braking is available once the pedal travels an additional distance, about 36 mm according to Nissan.Although still under investigation, Nissan states it has not determined the condition represents an unreasonable risk to motor vehicle safety, citing low rate and vehicle age as additional factors.In March 2018, Nissan began conducting a customer satisfaction campaign on certain MY 2009 Murano to service (flush and replace the brake fluid), and then test and replace the HCU as needed.The campaign is being conducted free of charge to customers.During the EA, ODI will request VRTC continue to evaluate the cause and consequence of HCU failures, including the affects of multi-valve failures.ODI will further study the potential scope of the alleged defect as it understands similar HCUs and brake fluid is used in other MY Muranos, and potentially in other Nissan models as well.ODI notes that improved valve coatings were introduced on Nissan HCUs at some subsequent stage.

Service Brakes, Air:antilock

The Office of Defects Investigation (ODI) is closing this Preliminary Evaluation and upgrading to an Engineering Analysis (EA) 18-001.During the PE, ODI requested and reviewed information provided by Nissan including consumer complaints and other field and technical data related to failures of the hydraulic control unit (HCU), an electro-mechanical brake system component that provides antilock braking and other functionality in the subject model year (MY) 2009 Murano.The subject failure of the HCU, which involves improper operation of an internal hydraulic control valve, can cause extended brake pedal travel and may result in a reduction in overall braking effectiveness.Tier-one supplier Continental manufactured the HCU for Nissan.ODI currently recognizes 484 subject vehicle complaints that appear related to the alleged defect.Fourteen crash allegations, with three non-life threatening injuries are under evaluation also.ODI has been monitoring consumer complaints received, and in some cases has obtained suspect HCUs from complainants' vehicles.Recovered HCUs sent to NHTSA's Vehicle Research and Test Center (VRTC) in East Liberty, Ohio are under evaluation, and VRTC has conducted limited vehicle testing also.In a July 28, 2017 submission, Nissan acknowledged that a failure of the HCU can result in increased brake pedal travel during braking.Nissan's analysis of returned parts revealed that a zinc coating used on the normally closed valve assemblies inside the HCU may react with certain brake fluid constituents.The reaction results in the formation of a gelatinous material that can harden with time and prevent the valve from closing after opening in an ABS event.When this occurs, Nissan maintains that the hydraulic brake system remains intact and that full braking is available once the pedal travels an additional distance, about 36 mm according to Nissan.Although still under investigation, Nissan states it has not determined the condition represents an unreasonable risk to motor vehicle safety, citing low rate and vehicle age as additional factors.In March 2018, Nissan began conducting a customer satisfaction campaign on certain MY 2009 Murano to service (flush and replace the brake fluid), and then test and replace the HCU as needed.The campaign is being conducted free of charge to customers.During the EA, ODI will request VRTC continue to evaluate the cause and consequence of HCU failures, including the affects of multi-valve failures.ODI will further study the potential scope of the alleged defect as it understands similar HCUs and brake fluid is used in other MY Muranos, and potentially in other Nissan models as well.ODI notes that improved valve coatings were introduced on Nissan HCUs at some subsequent stage.

Service Brakes

The Office of Defects Investigation (ODI) is closing this Preliminary Evaluation and upgrading to an Engineering Analysis (EA) 18-001.During the PE, ODI requested and reviewed information provided by Nissan including consumer complaints and other field and technical data related to failures of the hydraulic control unit (HCU), an electro-mechanical brake system component that provides antilock braking and other functionality in the subject model year (MY) 2009 Murano.The subject failure of the HCU, which involves improper operation of an internal hydraulic control valve, can cause extended brake pedal travel and may result in a reduction in overall braking effectiveness.Tier-one supplier Continental manufactured the HCU for Nissan.ODI currently recognizes 484 subject vehicle complaints that appear related to the alleged defect.Fourteen crash allegations, with three non-life threatening injuries are under evaluation also.ODI has been monitoring consumer complaints received, and in some cases has obtained suspect HCUs from complainants' vehicles.Recovered HCUs sent to NHTSA's Vehicle Research and Test Center (VRTC) in East Liberty, Ohio are under evaluation, and VRTC has conducted limited vehicle testing also.In a July 28, 2017 submission, Nissan acknowledged that a failure of the HCU can result in increased brake pedal travel during braking.Nissan's analysis of returned parts revealed that a zinc coating used on the normally closed valve assemblies inside the HCU may react with certain brake fluid constituents.The reaction results in the formation of a gelatinous material that can harden with time and prevent the valve from closing after opening in an ABS event.When this occurs, Nissan maintains that the hydraulic brake system remains intact and that full braking is available once the pedal travels an additional distance, about 36 mm according to Nissan.Although still under investigation, Nissan states it has not determined the condition represents an unreasonable risk to motor vehicle safety, citing low rate and vehicle age as additional factors.In March 2018, Nissan began conducting a customer satisfaction campaign on certain MY 2009 Murano to service (flush and replace the brake fluid), and then test and replace the HCU as needed.The campaign is being conducted free of charge to customers.During the EA, ODI will request VRTC continue to evaluate the cause and consequence of HCU failures, including the affects of multi-valve failures.ODI will further study the potential scope of the alleged defect as it understands similar HCUs and brake fluid is used in other MY Muranos, and potentially in other Nissan models as well.ODI notes that improved valve coatings were introduced on Nissan HCUs at some subsequent stage.