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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

Electrical System complaints

29 reports
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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

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

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

11,645 miles · Jun 4, 2013
Electrical System

THE INTELLIGENT KEY SYSTEM ALLOWED THE VEHICLE TO BE DRIVEN OFF WITHOUT THE KEY PRESENT (IT WAS IN THE POCKET OF A PERSON STANDING OUTSIDE THE CAR). THE DRIVER AND PASSENGERS THEN WENT ON A 15 MILE TRIP, WHEREIN THE VEHICLE WAS PARKED (SAFELY). AFTER AWHILE THE VEHICLE WAS RE-ENTERED, BUT THE DRIVER COULD NOT START THE CAR BECAU…

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THE INTELLIGENT KEY SYSTEM ALLOWED THE VEHICLE TO BE DRIVEN OFF WITHOUT THE KEY PRESENT (IT WAS IN THE POCKET OF A PERSON STANDING OUTSIDE THE CAR). THE DRIVER AND PASSENGERS THEN WENT ON A 15 MILE TRIP, WHEREIN THE VEHICLE WAS PARKED (SAFELY). AFTER AWHILE THE VEHICLE WAS RE-ENTERED, BUT THE DRIVER COULD NOT START THE CAR BECAUSE THE KEY WAS NOT PRESENT. 2 YOUNG CHILDREN WERE LEFT WAITING IN THE HOT SUN, BUT WERE NOT INJURED. EVENTUALLY ANOTHER PERSON RETRIEVED THE KEYS AND BROUGHT THEM TO THE DISABLED CAR AND DRIVER USING A SECOND VEHICLE. IT WAS VERY INCONVENIENT AND STRESSFUL FOR ALL PARTIES INVOLVED AND LUCKILY NO ONE WAS INJURED. NOTE: LATER ON, AFTER TESTING THE VEHICLE IN A CONTROLLED SITUATION, THE WARNING SYSTEM DID NOT INDICATE THAT THE KEY WAS NOT PRESENT AS THE OWNER'S MANUAL STATES IT SHOULD. *TR

NHTSA ODI #10515049

6,130 miles · Feb 25, 2013
Electrical System

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE ELECTRICAL AND BATTERY SYSTEM FAILED NUMEROUS TIMES AND THE ELECTRICAL SYSTEM DISCHARGED NUMEROUS TIMES AT LOW SPEED OF 35 MPH. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES FOR THE FAILURE. THE DEALER ADVISED THAT THEY COULD NOT REPAIR THE VEHICLE. THE MAN…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE ELECTRICAL AND BATTERY SYSTEM FAILED NUMEROUS TIMES AND THE ELECTRICAL SYSTEM DISCHARGED NUMEROUS TIMES AT LOW SPEED OF 35 MPH. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES FOR THE FAILURE. THE DEALER ADVISED THAT THEY COULD NOT REPAIR THE VEHICLE. THE MANUFACTURER ADVISED THAT NOTHING WAS WRONG WITH THE VEHICLE AND THAT IT WAS PERFORMING ACCORDING TO THE ELECTRICAL SPECIFICATIONS. THE FAILURE MILEAGE 6,130 WAS AND THE CURRENT MILEAGE WAS 6,900.

NHTSA ODI #10500019

14,232 miles · Sep 21, 2012
Electrical System

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE BATTERY AND RAPID RANGE CAPACITY BARS DISAPPEARED, MAKING IT DIFFICULT TO DECIPHER HOW MUCH FURTHER THE VEHICLE COULD ACCELERATE. THE VEHICLE WAS TAKEN TO A DEALER FOR DIAGNOSIS BUT THE DEALER STATED THAT THEY WERE NOT ALLOWED TO DIAGNOSE,…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE BATTERY AND RAPID RANGE CAPACITY BARS DISAPPEARED, MAKING IT DIFFICULT TO DECIPHER HOW MUCH FURTHER THE VEHICLE COULD ACCELERATE. THE VEHICLE WAS TAKEN TO A DEALER FOR DIAGNOSIS BUT THE DEALER STATED THAT THEY WERE NOT ALLOWED TO DIAGNOSE, REPAIR OR ADMIT THAT THERE WAS AN ISSUE DUE TO COMPANY POLICY. THE MANUFACTURER WAS NOTIFIED AND DENIED ANY ASSISTANCE TO THE CONTACT. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 14,232 AND THE CURRENT MILEAGES WERE 17,025.

NHTSA ODI #10476674

25,725 miles · Sep 3, 2012
Electrical System

I AM FILING A COMPLAINT ABOUT THE MAIN BATTERY IN MY 2011 NISSAN LEAF. ACCORDING TO NISSAN, I SHOULD HAVE EXPECTED ABOUT A 20% BATTERY CAPACITY LOSS AFTER FIVE YEARS OF OWNERSHIP. I HAVE HAD THE CAR FOR 14.5 MONTHS. AS OF 8/29/2012, THE BATTERY HAS LOST 3 BARS OF CAPACITY (APPROXIMATELY 27.5% CAPACITY LOSS). THIS RATE OF CAPACIT…

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I AM FILING A COMPLAINT ABOUT THE MAIN BATTERY IN MY 2011 NISSAN LEAF. ACCORDING TO NISSAN, I SHOULD HAVE EXPECTED ABOUT A 20% BATTERY CAPACITY LOSS AFTER FIVE YEARS OF OWNERSHIP. I HAVE HAD THE CAR FOR 14.5 MONTHS. AS OF 8/29/2012, THE BATTERY HAS LOST 3 BARS OF CAPACITY (APPROXIMATELY 27.5% CAPACITY LOSS). THIS RATE OF CAPACITY LOSS IS FAR BEYOND WHAT NISSAN EXPECTED AND POSSIBLY MODELED/ENGINEERED. PLEASE HELP INSURE THERE WILL NOT BE ANY SAFETY ISSUES WITH THE BATTERY AS THE CAPACITY DETERIORATES. *TR

NHTSA ODI #10473672

5,000 miles · Aug 24, 2012
Electrical SystemVehicle Speed Control

I HAVE RUN INTO WHAT I BELIEVE IS A SMALL DESIGN FLAW. SCENARIO: 1) LEAF IS PARKED IN CONDO PARKING GARAGE WITH GENTLE UPHILL SLOPE ON PARKING SPACE. 2) STARTUP SOUND IS TURNED OFF. 2) FORGET THE LEAF IS STILL PLUGGED IN TO AV L2 EVSE. 3) PUT FOOT ON BRAKE, PUSH START BUTTON. 4) SHIFT INTO REVERSE, NOT LOOKING …

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I HAVE RUN INTO WHAT I BELIEVE IS A SMALL DESIGN FLAW. SCENARIO: 1) LEAF IS PARKED IN CONDO PARKING GARAGE WITH GENTLE UPHILL SLOPE ON PARKING SPACE. 2) STARTUP SOUND IS TURNED OFF. 2) FORGET THE LEAF IS STILL PLUGGED IN TO AV L2 EVSE. 3) PUT FOOT ON BRAKE, PUSH START BUTTON. 4) SHIFT INTO REVERSE, NOT LOOKING AT DASH SCREEN TO SEE WARNING THAT LEAF WON'T START. 5) PRESS DOWN ON PARKING BRAKE LEVER TO DISENGAGE PARKING BRAKE. 6) PRESS ACCELERATOR. RESULT: THE LEAF DOESN'T START SINCE IT IS STILL PLUGGED IN TO EVSE. THE LEAF SHIFTS OUT OF PARK INTO NEUTRAL AFTER STEP #4. ONCE PARKING BRAKE IS OFF AND FOOT IS ON ACCELERATOR, THERE IS NOTHING TO KEEP THE LEAF FROM ROLLING BACK. IF IT ROLLS FAR ENOUGH IT WILL DAMAGE EITHER THE L2 CONNECTOR TO THE CAR OR THE EVSE OR BOTH. COMMENT: THIS IS NOT A HYPOTHETICAL, IT HAS HAPPENED TO ME 3-4 TIMES IN THE LAST YEAR. FORTUNATELY, I QUICKLY REALIZED THE LEAF WAS STILL CONNECTED TO THE EVSE AND APPLIED THE BRAKE SO THAT NO DAMAGE WAS DONE. IN MY OPINION, YOU SHOULD NOT BE ABLE TO SHIFT THE LEAF OUT OF PARK OR RELEASE THE PARKING BRAKE WHILE THE LEAF IS STILL PLUGGED IN. I WOULD SUGGEST CHANGING THE SOFTWARE TO AVOID POTENTIAL DAMAGE TO THE LEAF L2 CONNECTER, EVSE OR DAMAGE TO PROPERTY IN THE VICINITY. *TR

NHTSA ODI #10472379

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.