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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

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

When problems were reported

Mileage at the reported incident

76 reports with mileage · 19 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

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

NHTSA owner reports · September 18, 2026 snapshot.

5 crash reports0 fire reports3 injury reports

What owners actually said

95 reports
38,000 miles · Jun 18, 2018
Air Bags

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT AIR BAG INDICATOR ILLUMINATED, WHICH WAS A SAFETY CONCERN. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC AND IT WAS DIAGNOSED THAT THE AIR BAG SEAT SENSOR WAS FAULTY. THE VEHICLE WAS NOT REPAIRED. THE LOCAL DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT AIR BAG INDICATOR ILLUMINATED, WHICH WAS A SAFETY CONCERN. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC AND IT WAS DIAGNOSED THAT THE AIR BAG SEAT SENSOR WAS FAULTY. THE VEHICLE WAS NOT REPAIRED. THE LOCAL DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED AND OPENED CASE NUMBER: 31686373. THE MANUFACTURER REFERRED THE CONTACT TO THE LOCAL DEALER. THE FAILURE MILEAGE WAS 38,000.

NHTSA ODI #11102456

72,500 miles · Jun 14, 2018
Air Bags

PASSENGER AIR BAG SEAT PRESSURE SENSOR FAIL. PASSENGER AIR BAG OFF LIGHT ILLUMINATE WHEN FRONT PASSENGER OCCUPIED THE SEAT ALSO FLASHING AIRBAG LIGHT ON THE DASH BOARD. ERROR CODE B1018. DEALER WANTS WHOLE SEAT REPLACEMENT COST $3000. NO NISSAN WARRANTY OR RECALL ON 2011 NISSAN LEAF.

NHTSA ODI #11101830

56,000 miles · Dec 5, 2017
Air Bags

SO, APPARENTLY THE 2012 - 2014 NISSAN LEAF HAD AN ISSUE WITH THE PASSENGER AIRBAG SENSOR AND IS COVERED BY RECALL, BUT NOT THE FIRST YEAR MODELS, 2011. IS THIS TO ASSUME THAT THE SENSOR IS DIFFERENT FROM THE FIRST TO THESE SUBSEQUENT YEARS.

NHTSA ODI #11052546

39,000 miles · Oct 5, 2017
Electrical System

I BELIEVE THE BATTERY WAS RIGGED INTO RUNNING LOW RIGHT AFTER THE WARRANTY RAN OUT

NHTSA ODI #11031919

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…

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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

Mileage unknown · Jul 15, 2017
Air Bags

2011 NISSAN LEAF PASSENGER SEAT OCCUPANT SENSOR OFF WHEN PASSENGER IS IN SEAT. I TOOK IT TO DEALER WHO INSPECTED HARNESS AND CONNECTIONS UNDER FRONT SEAT FOR WEAR OR DAMAGE. NO FINDINGS. FOLLOWED INSPECTION PROCEDURES IN ESM. I WAS TOLD THAT VEHICLE WILL REQUIRE A SEAT CUSHION REPLACEMENT WITH OCCUPANT DETECTION CONTROL UNIT. CO…

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2011 NISSAN LEAF PASSENGER SEAT OCCUPANT SENSOR OFF WHEN PASSENGER IS IN SEAT. I TOOK IT TO DEALER WHO INSPECTED HARNESS AND CONNECTIONS UNDER FRONT SEAT FOR WEAR OR DAMAGE. NO FINDINGS. FOLLOWED INSPECTION PROCEDURES IN ESM. I WAS TOLD THAT VEHICLE WILL REQUIRE A SEAT CUSHION REPLACEMENT WITH OCCUPANT DETECTION CONTROL UNIT. COST APPROXIMATELY $2,900 AND NO GUARANTEE OF FIX. MAY NEED AIR BAG CONTROL UNIT REPLACEMENT. SEEMS TO BE THE SAME PROBLEM AS THE 2013 - 2016 RECALL, BUT 2011 DID NOT GET RECALLED.

NHTSA ODI #11005502

Mileage unknown · Jun 2, 2017
Air Bags

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE AIR BAG WARNING INDICATOR FOR THE FRONT PASSENGER SIDE ILLUMINATED. THE DEALER (COGGIN NISSAN ON ATLANTIC IN JACKSONVILLE 10600 ATLANTIC BLVD, JACKSONVILLE, FL 32225 (904) 302-8231) DIAGNOSED THAT THERE WAS AN OCS ERROR FAILURE, IN WHICH THE FRONT PASSENGER SID…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE AIR BAG WARNING INDICATOR FOR THE FRONT PASSENGER SIDE ILLUMINATED. THE DEALER (COGGIN NISSAN ON ATLANTIC IN JACKSONVILLE 10600 ATLANTIC BLVD, JACKSONVILLE, FL 32225 (904) 302-8231) DIAGNOSED THAT THERE WAS AN OCS ERROR FAILURE, IN WHICH THE FRONT PASSENGER SIDE AIR BAG COULD DEACTIVATE OFF OR FAIL TO FUNCTION. THE DEALER AND MANUFACTURER VERIFIED THAT THE FAILURE WAS RELATED TO AN AIR BAG RECALL, BUT THE VIN WAS EXCLUDED. THE NHTSA CAMPAIGN NUMBER WAS NOT PROVIDED. THE FAILURE MILEAGE WAS NOT AVAILABLE.

NHTSA ODI #10992853

36,769 miles · May 1, 2017
Electrical System

TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED A LOSS OF POWER WITHOUT WARNING. THE CONTACT STATED THAT THE VEHICLE HAD BEEN CHARGED THE ENTIRE NIGHT. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER STATED THAT DUE TO THE VEHICLE BEING INVOLVED IN A CLASS ACTION LAWSUIT, THEY…

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TL* THE CONTACT OWNS A 2011 NISSAN LEAF. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED A LOSS OF POWER WITHOUT WARNING. THE CONTACT STATED THAT THE VEHICLE HAD BEEN CHARGED THE ENTIRE NIGHT. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER STATED THAT DUE TO THE VEHICLE BEING INVOLVED IN A CLASS ACTION LAWSUIT, THEY WOULD NOT REPAIR THE VEHICLE. THE FAILURE MILEAGE WAS APPROXIMATELY 36,769.

NHTSA ODI #10981559

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…

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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…

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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

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.