← 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

Service Brakes complaints

16 reports
Clear category filter
Mileage unknown · May 31, 2024
Electrical SystemService Brakes

When applying brakes, at a point in the pedal travel the vehicle deceleration goes from too little to vastly too much. This makes the vehicle challenging to drive in traffic without colliding into the vehicle in front and not stopping so quickly as to cause the trailing vehicle to collide. The dealer has confirmed the behavior…

Read full complaint

When applying brakes, at a point in the pedal travel the vehicle deceleration goes from too little to vastly too much. This makes the vehicle challenging to drive in traffic without colliding into the vehicle in front and not stopping so quickly as to cause the trailing vehicle to collide. The dealer has confirmed the behavior. There is a TSB to supposedly address the problem, and a receipt is attached of that TSB software update being applied. However, this has not changed the behavior. This is at least partially a software issue, since the vehicle blends physical brakes with EV regenerative braking.

NHTSA ODI #11591749

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

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

35,900 miles · Jul 17, 2017
Service Brakes

INTERMITTENTLY, LITTLE OR NO BRAKING FORCE MAYBE BE AVAILABLE WHEN THE CAR IS PUT IN GEAR AFTER INITIAL KEY-ON FOLLOWING ABOUT 10 MINUTE KEY-OFF AFTER A 20-30 MINUTE DRIVE CYCLE. THE FAULT IS MORE LIKELY TO OCCUR IN WARM WEATHER. PUMPING THE BRAKES ONCE BEFORE PUTTING THE CAR IN GEAR WILL CLEAR THE PROBLEM. IF THE BRAKES ARE…

Read full complaint

INTERMITTENTLY, LITTLE OR NO BRAKING FORCE MAYBE BE AVAILABLE WHEN THE CAR IS PUT IN GEAR AFTER INITIAL KEY-ON FOLLOWING ABOUT 10 MINUTE KEY-OFF AFTER A 20-30 MINUTE DRIVE CYCLE. THE FAULT IS MORE LIKELY TO OCCUR IN WARM WEATHER. PUMPING THE BRAKES ONCE BEFORE PUTTING THE CAR IN GEAR WILL CLEAR THE PROBLEM. IF THE BRAKES ARE NOT PUMPED THE CAR WILL CONTINUE TO ROLL DUE TO THE RESIDUAL TORQUE FROM THE ELECTRIC DRIVE THAT EXISTS EVEN WHEN THE ACCELERATOR IS NOT DEPRESSED. I TOOK THE CAR TO A NISSAN DEALER WHO CHARGED $209 FOR ANALYSIS AND TO APPLY A, "SOFTWARE UPGRADE," TO THE CAR'S COMPUTER SYSTEM. IT S NOT YET KNOWN IF THE SOFTWARE RESOLVED THE ISSUE DUE TO INTERMITTENT NATURE. THIS ISSUE COULD POSE A HAZARD FOR ITINERANT DRIVERS OF LEAFS WITHOUT SOFTWARE UPGRADE BECAUSE THOSE DRIVERS WOULD NOT KNOW BRAKE PUMPING ALLEVIATES THE PROBLEM. THE NORMAL REACTION IS TO PRESS THE BRAKES HARDER WITHOUT LIFTING, WHICH HAS NO EFFECT ON RESTORING BRAKE FORCE.

NHTSA ODI #11005959

40,000 miles · Jul 17, 2016
Service Brakes

I HAVE HAD THE CAR INTO THE DEALER TWICE IN THE PAST 1 1/2 YEARS TO 'REPROGRAM' THE GRABBY BRAKES. THEY GET VERY SENSITIVE WHEN BRAKING BELOW 25 MPH. THEY GRAB, LET GO, GRAB, AND LET GO. I AM NOW BEING TOLD THAT IT WILL COST ME OVER $100 JUST FOR THEM TO LOOK AT THEM A THIRD TIME. I AM TIRED OF THE BANDAID APPROACH AND WANT IT…

Read full complaint

I HAVE HAD THE CAR INTO THE DEALER TWICE IN THE PAST 1 1/2 YEARS TO 'REPROGRAM' THE GRABBY BRAKES. THEY GET VERY SENSITIVE WHEN BRAKING BELOW 25 MPH. THEY GRAB, LET GO, GRAB, AND LET GO. I AM NOW BEING TOLD THAT IT WILL COST ME OVER $100 JUST FOR THEM TO LOOK AT THEM A THIRD TIME. I AM TIRED OF THE BANDAID APPROACH AND WANT IT FIXED BUT SHOULD NOT HAVE TO PAY A PENNY FOR IT. THE CAR JUST TURNED 40,000 MILES. I LOVE IT EXCEPT THIS ANNOYING AND POSSIBLY DANGEROUS BRAKING PROBLEM.

NHTSA ODI #10885404

25,000 miles · May 27, 2016
Service Brakes

I ECHO SO MANY OTHERS WHO HAVE HAD THE EXPERIENCE OF THE BRAKES BEING OUT OF ONE'S CONTROL AT LOW SPEEDS. INSTEAD OF ALLOWING FOR A SMOOTH, SLOW DECELERATION, THE BRAKES ACTIVATE HARD END END UP JERKING THE CAR. THERE HAVE BEEN TIMES WHEN THIS HAS BEEN REALLY FRIGHTENING. ENOUGH PEOPLE HAVE COMPLAINED ABOUT THIS THAT IT SHOULD B…

Read full complaint

I ECHO SO MANY OTHERS WHO HAVE HAD THE EXPERIENCE OF THE BRAKES BEING OUT OF ONE'S CONTROL AT LOW SPEEDS. INSTEAD OF ALLOWING FOR A SMOOTH, SLOW DECELERATION, THE BRAKES ACTIVATE HARD END END UP JERKING THE CAR. THERE HAVE BEEN TIMES WHEN THIS HAS BEEN REALLY FRIGHTENING. ENOUGH PEOPLE HAVE COMPLAINED ABOUT THIS THAT IT SHOULD BE LOOKED INTO! IT'S HARD TO RECALL EXACTLY THE CONDITIONS UNDER WHICH THIS HAPPENS, BECAUSE IT'S INTERMITTENT, BUT MOSTLY AT LOW SPEEDS.

NHTSA ODI #10871280

15,677 miles · May 4, 2016
Service Brakes

WHEN DEPRESSING THE BRAKE PEDAL, THE VEHICLE GOES FROM A SOFT BRAKING TO A JOLTING STOP AT SPEEDS BELOW 20 MPH. THE VEHICLE JERKS SEVERLY WHEN BRAKING AND I AM ALSO VERY CONCERNED THIS WILL BE A PROBLEM ON WET ROADS AND I'M WORRIED ABOUT BEING REAR-ENDED AS IT STOPS SUDDENLY. I EXPERIENCE THIS EVERYDAY THAT I DRIVE IT. NOW, THE …

Read full complaint

WHEN DEPRESSING THE BRAKE PEDAL, THE VEHICLE GOES FROM A SOFT BRAKING TO A JOLTING STOP AT SPEEDS BELOW 20 MPH. THE VEHICLE JERKS SEVERLY WHEN BRAKING AND I AM ALSO VERY CONCERNED THIS WILL BE A PROBLEM ON WET ROADS AND I'M WORRIED ABOUT BEING REAR-ENDED AS IT STOPS SUDDENLY. I EXPERIENCE THIS EVERYDAY THAT I DRIVE IT. NOW, THE BRAKES HAVE ALSO BEEN RELEASING WHEN I'M TRYING TO STOP AT HIGHER SPEEDS, GIVING THE FEELING THAT I MAY NOT GET STOPPED IN TIME. AND THIS IS ONLY GETTING WORSE. THE CAR ESPECIALLY JOLTS WHEN CREEPING FORWARD AT A LIGHT OR INTO A PARKING SPOT. THE RELEASING, WHERE I FELT LIKE I COULD NOT STOP THE CAR, I HAVE EXPERIENCED RECENTLY ALSO HAPPENED IN THE SAME SITUATIONS. THE CAR WILL ALSO OCCASIONALLY CREEP FORWARD WHEN THE CAR WAS STOPPED, AND THE BRAKE PEDAL IS STILL DEPRESSED.

NHTSA ODI #10863130

21,000 miles · Jan 12, 2016
Service Brakes

BRAKES DID NOT WORK AFTER ENGAGING DRIVE FROM STATIONARY POSITION. AFTER A FEW MOMENTS, NORMAL BRAKE ACTIVITY RESUMED. BELIEVED TO BE RELATED TO DEPLETED 12 V BATTERY.

NHTSA ODI #10819773

35,500 miles · Oct 20, 2015
Service Brakes

THE BRAKES GO FROM A SOFT BRAKING TO A JOLTING STOP AT SPEEDS BELOW 20 MPH. I HAVE SMALL CHILDREN IN THE CAR, AND THEIR HEADS ARE BEING JOLTED AROUND WHEN THE CAR BRAKES THIS WAY. I AM CONCERNED THIS WILL BE A PROBLEM ON SLICK ROADS AND I'M WORRIED ABOUT BEING REAR-ENDED WHEN IT STOPS SO SUDDENLY. IT DOES THIS EVERYDAY THAT I…

Read full complaint

THE BRAKES GO FROM A SOFT BRAKING TO A JOLTING STOP AT SPEEDS BELOW 20 MPH. I HAVE SMALL CHILDREN IN THE CAR, AND THEIR HEADS ARE BEING JOLTED AROUND WHEN THE CAR BRAKES THIS WAY. I AM CONCERNED THIS WILL BE A PROBLEM ON SLICK ROADS AND I'M WORRIED ABOUT BEING REAR-ENDED WHEN IT STOPS SO SUDDENLY. IT DOES THIS EVERYDAY THAT I DRIVE IT, HOWEVER THE DEALERSHIP CAN FIND NOTHING WRONG WITH THE CAR. LATELY, THE BRAKES HAVE ALSO BEEN RELEASING WHEN I'M TRYING TO STOP, GIVING THE FEELING THAT I MAY NOT GET STOPPED IN TIME. I WOULD SAY IT FEELS LIKE THE CAR CANNOT SMOOTHLY TRANSITION BETWEEN REGULAR AND REGAIN BRAKES. I HAVE HAD IT AT THE DEALERSHIP TWICE, AND THEY PERFORMED A SOFTWARE UPDATE THAT DID NOT FIX THE PROBLEM. IT IS ONLY GETTING WORSE. THE CAR ESPECIALLY JOLTS WHEN CREEPING FORWARD AT A LIGHT OR INTO A PARKING SPOT. THE RELEASING, WHERE I FELT LIKE I COULD NOT STOP THE CAR, I HAVE EXPERIENCED RECENTLY ALSO HAPPENED IN THE SAME SITUATIONS. THE CAR WILL ALSO OCCASIONALLY CREEP FORWARD WHEN THE CAR WAS STOPPED, AND THE BRAKE PEDAL IS STILL DEPRESSED.

NHTSA ODI #10783837

2,550 miles · Sep 29, 2014
Service Brakes

WHILE IN A LINEUP OF CARS AT A STOP SIGN INTERSECTION, I HAD TO START AND STOP REPEATEDLY, AS EACH CAR MOVED FORWARD. VERY SOON, THE BRAKES DEVELOPED A JERKY RESPONSE, GRABBING AND RELEASING. SO THE CAR WAS LURCHING FORWARD AND JERKING TO A STOP. IT WAS QUITE EMBARRASSING, AND THE CAR BEHIND ME NEARLY REAR-ENDED ME. THIS WAS THE…

Read full complaint

WHILE IN A LINEUP OF CARS AT A STOP SIGN INTERSECTION, I HAD TO START AND STOP REPEATEDLY, AS EACH CAR MOVED FORWARD. VERY SOON, THE BRAKES DEVELOPED A JERKY RESPONSE, GRABBING AND RELEASING. SO THE CAR WAS LURCHING FORWARD AND JERKING TO A STOP. IT WAS QUITE EMBARRASSING, AND THE CAR BEHIND ME NEARLY REAR-ENDED ME. THIS WAS THE FIRST OCCURRENCE, AND THE SAME THING HAS HAPPENED SEVERAL TIMES SINCE. THE BRAKES ARE NOT CONSISTENT - SOMETIMES THEY GRAB COMPLETELY AND A COUPLE OF TIMES I HAVE COMPLETELY LOST BRAKING POWER FOR A FEW MOMENTS. THE ISSUE STILL EXISTS, AND I KNOW SEVERAL OTHER LEAF DRIVERS WHO HAVE ALSO EXPERIENCED IT. THIS IS VERY DANGEROUS, AND ONE OF THESE DAYS SOMEONE WILL BE KILLED BECAUSE OF NISSAN'S NEGLIGENCE, UNLESS NHTSA FORCES SOME ACTION ON IT. THIS NEEDS TO BE LOOKED INTO VERY THOROUGHLY AND FIXED. *TR

NHTSA ODI #10640045

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.