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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.

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How this year compares

Owner complaints by model year

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

What owners reported most

All reported categories

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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
16,000 miles · Sep 29, 2014
Structure

AFTER STOPPING AT AN INTERSECTION, LOOKING BOTH WAYS AND NOT SEEING ANYBODY, I STARTED GOING THROUGH AND CROSSING THE STREET, THEN I SUDDENLY COME FACE-TO-FACE WITH A PEDESTRIAN ONLY INCHES FROM THE SIDE OF THE CAR! I ALMOST HIT SOMEONE, AND THE EXPERIENCE LEFT ME QUITE RATTLED. THE PROBLEM IS THE PILLAR AT THE FRONT LEFT CORNER…

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AFTER STOPPING AT AN INTERSECTION, LOOKING BOTH WAYS AND NOT SEEING ANYBODY, I STARTED GOING THROUGH AND CROSSING THE STREET, THEN I SUDDENLY COME FACE-TO-FACE WITH A PEDESTRIAN ONLY INCHES FROM THE SIDE OF THE CAR! I ALMOST HIT SOMEONE, AND THE EXPERIENCE LEFT ME QUITE RATTLED. THE PROBLEM IS THE PILLAR AT THE FRONT LEFT CORNER IS AT THE WORST POSSIBLE POSITION AS IT COMPLETELY BLOCKS THE VIEW OF THE FAR STREET CORNER, SO I DID NOT SEE THE PEDESTRIAN WHO STARTED CROSSING THE STREET. ALSO, THE PILLAR AT THE FRONT RIGHT SIDE COMPLETELY BLOCKS THE VIEW OF THE NEAR STREET CORNER. I HAVE SINCE TRAINED MYSELF TO CONSCIOUSLY PERFORM A CRAZY-LOOKING MANEUVER TO MOVE MY BODY TO THE LEFT AND TO THE RIGHT AND BACK, AT EVERY INTERSECTION, TO PEEK AROUND THE OBSTACLE. I DON'T HAVE TO DO THIS IN ANY OTHER VEHICLE. THIS CAR HAS EXCEPTIONALLY TERRIBLE VISIBILITY BECAUSE OF THE LOCATION OF THE PILLAR, AND IT IS VERY VERY DANGEROUS. THIS NEEDS TO BE REDESIGNED IMMEDIATELY BEFORE IT RESULTS IN A PEDESTRIAN FATALITY. IT ALMOST DID. *TR

NHTSA ODI #10640051

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…

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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

50,060 miles · Sep 17, 2014
Service BrakesCrashInjury

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 15 MPH, THE BRAKE PEDAL WAS DEPRESSED AND FAILED TO RESPOND WITHOUT WARNING. AS A RESULT, THE CONTACT CRASHED INTO ANOTHER VEHICLE. THE CONTACT SUSTAINED INJURIES THAT DID NOT REQUIRE MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEH…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 15 MPH, THE BRAKE PEDAL WAS DEPRESSED AND FAILED TO RESPOND WITHOUT WARNING. AS A RESULT, THE CONTACT CRASHED INTO ANOTHER VEHICLE. THE CONTACT SUSTAINED INJURIES THAT DID NOT REQUIRE MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS DESTROYED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 50,060.

NHTSA ODI #10637058

4,000 miles · Jul 9, 2014
Electrical System

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE BATTERY WOULD DRAIN RAPIDLY WITHOUT WARNING. THE CONTACT MENTIONED THAT THE MILEAGE SPECIFIED FOR THE BATTERY TO BE RECHARGED WAS INACCURATE. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE FAILURE WAS NOT ABLE TO BE DIAGNOSED. THE FAILURE MILEAGE WAS 4,000 AND CUR…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE BATTERY WOULD DRAIN RAPIDLY WITHOUT WARNING. THE CONTACT MENTIONED THAT THE MILEAGE SPECIFIED FOR THE BATTERY TO BE RECHARGED WAS INACCURATE. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE FAILURE WAS NOT ABLE TO BE DIAGNOSED. THE FAILURE MILEAGE WAS 4,000 AND CURRENT MILEAGE WAS 6,000.

NHTSA ODI #10609334

10 miles · May 28, 2014
Electrical System

VEHICLE HAS DIGITAL DISPLAY THAT INDICATES HOW MANY MILES OF TRAVEL REMAIN IN THE BATTERY. METER READS AT LEAST TWICE AS HIGH AS MILES ACTUALLY DELIVERED. COULD CAUSE UNAWARE DRIVE TO RUN OUT OF CHARGE AND STOP IN TRAFFIC LANES THUS POTENTIALLY CAUSING AN ACCIDENT OF BODILY HARM TO OCCUPANTS OF VEHICLE. *TR

NHTSA ODI #10594664

7,000 miles · May 28, 2014
Service Brakes

BRAKES ON THE NISSAN LEAF WERE PULSING ON AND THE WOULD TURN OFF AND A FEW SECONDS LATER WOULD TURN BACK ON. CYCLE WOULD REPEAT EVERY 3 SECONDS TILL THE CAR CAME TO COMPLETE STOP. LOCAL DEALER INVESTIGATED AND INFORMED ME THE DISC BRAKE ROTORS WERE WARPED. CAN'T BELIEVE THE BRAKES WOULD SHUT DOWN IF ROTORS WERE WARPED. COULD HAV…

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BRAKES ON THE NISSAN LEAF WERE PULSING ON AND THE WOULD TURN OFF AND A FEW SECONDS LATER WOULD TURN BACK ON. CYCLE WOULD REPEAT EVERY 3 SECONDS TILL THE CAR CAME TO COMPLETE STOP. LOCAL DEALER INVESTIGATED AND INFORMED ME THE DISC BRAKE ROTORS WERE WARPED. CAN'T BELIEVE THE BRAKES WOULD SHUT DOWN IF ROTORS WERE WARPED. COULD HAVE LEAD TO SERIOUS ACCIDENT. *TR

NHTSA ODI #10594659

3,631 miles · May 28, 2014
Electrical System

VEHICLE'S MAIN TRACTION BATTERY LOST 15% OF ITS USABLE CAPACITY AFTER ONLY 1 YEAR AND 3631 MILES OF VEHICLE USE. THIS RAPID LOSS IN BATTERY CAPACITY IS CONTRARY TO NISSAN'S ADVERTISED SERVICE LIFE OF 70%TO 80% CAPACITY AFTER 100,000 MILES. DEFECTIVE BATTERY COULD POTENTIALLY FAIL WHILE THE VEHICLE IS OPERATED AT HIGHWAY SPEEDS A…

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VEHICLE'S MAIN TRACTION BATTERY LOST 15% OF ITS USABLE CAPACITY AFTER ONLY 1 YEAR AND 3631 MILES OF VEHICLE USE. THIS RAPID LOSS IN BATTERY CAPACITY IS CONTRARY TO NISSAN'S ADVERTISED SERVICE LIFE OF 70%TO 80% CAPACITY AFTER 100,000 MILES. DEFECTIVE BATTERY COULD POTENTIALLY FAIL WHILE THE VEHICLE IS OPERATED AT HIGHWAY SPEEDS AND CAUSE LOSS OF STEERING AND OR BRAKES. *TR

NHTSA ODI #10594656

100 miles · Mar 12, 2014
Steering

THE NISSAN LEAF REPRESENTATIVE SCHEDULED AN APPOINTMENT WITH A LEAF MECHANIC HERE IN MIDLAND. I ARRIVED AT MY APPOINTMENT AND ASK THE MECHANIC IF HE WAS THE LEAF MECHANIC THAT I HAD THE APPOINTMENT WITH. HE ANSWERED YES. I TOOK HIM FOR A TEST DRIVE WHERE HE EXPERIENCED THE FRONT END PROBLEM. WHEN WE GOT BACK, THE SHOP MANAGE…

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THE NISSAN LEAF REPRESENTATIVE SCHEDULED AN APPOINTMENT WITH A LEAF MECHANIC HERE IN MIDLAND. I ARRIVED AT MY APPOINTMENT AND ASK THE MECHANIC IF HE WAS THE LEAF MECHANIC THAT I HAD THE APPOINTMENT WITH. HE ANSWERED YES. I TOOK HIM FOR A TEST DRIVE WHERE HE EXPERIENCED THE FRONT END PROBLEM. WHEN WE GOT BACK, THE SHOP MANAGER WANTED TO SEE THE PROBLEM FOR HIMSELF. THEN I TALKED TO THE GENERAL MANAGER WHO TOLD ME THAT NEITHER WAS A CERTIFIED LEAF MECHANIC. WHEN I CALLED THE LEAF REPRESENTATIVE HE AGAIN TALKED TO ME. AFTER SEVERAL MORE CALLS TO HIM HE SAID THAT THE MECHANIC AND MANAGER SAID THAT IT WAS MY FAULT BECAUSE I WAS DRIVING ERRATIC EVEN WHEN I TOOK IT OUT ON THE LOOP AND THE HIGHWAY. THAT WAS A PURE LIE BY SOMEONE. I DID NEITHER. I ONLY DROVE IT AROUND THE NEIGHBORHOOD FOR THE TEST DRIVE. THEN THE LEAF REPRESENTATIVE TOLD ME THAT I NEEDED TO DRIVE TO ODESSA TO HAVE A LEAF MECHANIC TO CHECK IT OUT. THAT IS WHAT THEY ORIGINALLY TOLD ME ABOUT GOING TO MIDLAND FOR MY APPOINTMENT. THE ONLY PROBLEM IS THAT MY CAR WILL NO LONGER MADE IT TO ODESSA AND BACK ON A CHARGE. THEY TOLD ME THAT I WOULD HAVE TO DRIVE OVER THERE AND RENT A CAR TO GET BACK TO MIDLAND AND THEN I COULD DRIVE BACK TO ODESSA THE NEXT DAY. I SUGGESTED THAT THEY SEND THE LEAF MECHANIC OVER TO MIDLAND TO CHECK MY CAR. THEY WOULD NOT DO IT. IT IS OK FOR THEM TO HAVE ME SPEND TWO DAYS OF MY TIME BUT IT IS NOT OK FOR THEM TO SPEND A HALF DAY. NOW THEY SAY THAT THEY WILL DO NOTHING ELSE UNLESS I DO IT THEIR WAY. I DO NOT KNOW IF THEY EVER FIXED THE STEERING PROBLEMS BUT I KNOW THAT I HAVE ALMOST HAD AN ACCIDENT SEVERAL TIMES BECAUSE OF THE STEERING. I NOW HAVE TO DRIVE EXTREMELY CAREFUL. I DO NOT KNOW IF I COULD AVOID AN ACCIDENT IF I HAVE TO SWERVE FAST TO AVOID AN ACCIDENT. NOW THEY WILL NOT DO ANYTHING TO FIX THE 2011 AND 2012 MODELS. *TR

NHTSA ODI #10568917

25,500 miles · Feb 5, 2014
Electrical SystemService BrakesVehicle Speed Control

TWO MONTHS AGO I WAS BRAKING MODERATELY WHEN THE CAR SHUTTERED, THERE WAS A BUMP AND THE CAR BEGAN COASTING. I SAW THAT IT HAD POPPED INTO N (NEUTRAL) EVEN THOUGH I DIDN'T TOUCH THE GEAR SHIFT. I TRIED TO PUT IT BACK INTO D (DRIVE) BUT IT WOULDN'T RESPOND. I PUSHED THE CAR TO THE SIDE OF THE ROAD AND TRIED SEVERAL TIMES TO SHUT …

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TWO MONTHS AGO I WAS BRAKING MODERATELY WHEN THE CAR SHUTTERED, THERE WAS A BUMP AND THE CAR BEGAN COASTING. I SAW THAT IT HAD POPPED INTO N (NEUTRAL) EVEN THOUGH I DIDN'T TOUCH THE GEAR SHIFT. I TRIED TO PUT IT BACK INTO D (DRIVE) BUT IT WOULDN'T RESPOND. I PUSHED THE CAR TO THE SIDE OF THE ROAD AND TRIED SEVERAL TIMES TO SHUT IT DOWN. FINALLY, IT RESPONDED, THEN RESTARTED AND DROVE NORMALLY. AFTER THAT, THERE WOULD BE INTERMITTENT SHUTTERING AND BUMPING WHILE BRAKING. THE RECHARGING LIGHTS WILL PULSE AND I CAN FEEL THE REGENERATIVE FEATURE GRAB AND THEN RELEASE. ONE MORNING RECENTLY, ALONG WITH THESE SYMPTOMS THE RANGE PLUMMETED QUICKLY, BY ABOUT 1 MILE PER SECOND. AFTER DRIVING ONLY 20 MILES I HAD 17 MILES OF INDICATED RANGE. THEN, YESTERDAY, THE FIRST PROBLEM REAPPEARED: THE CAR WENT INTO NEUTRAL AND BRIEFLY WOULDN'T RESPOND. THE CAR IS NOW AT THE DEALER. *TR

NHTSA ODI #10563036

21,982 miles · Oct 9, 2013
Electrical System

BATTERY CAPACITY HAS DROPPED 1 BAR. NISSAN CASE NUMBER [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI #10547445

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.