Component
ELECTRICAL SYSTEM:SEAT HEATER:WIRING HARNESS
17 NHTSA complaints about electrical system:seat heater:wiring harness issues across 10 makes and 17 models.
The electrical system:seat heater:wiring harness is one of the standardized component categories NHTSA uses to classify consumer safety complaints. Across the public complaint database, it accounts for 17 filings from 10 manufacturers and 17 distinct vehicle models, a footprint large enough that defect engineers can isolate part-family patterns across different platforms that share the same supplier or the same federal motor vehicle safety standard.
Among filings citing this component, owners have reported 0 crashes, 3 fires, 6 injuries, and 0 fatalities. The most complained-about vehicle in this category is the VOLKSWAGEN EOS with 1 filings, followed by TOYOTA TACOMA and NISSAN ALTIMA. These severity counters are what separates a nuisance complaint trend from a pattern NHTSA is likely to escalate into a Preliminary Evaluation.
Component-level analysis is how the Office of Defects Investigation spots cross-manufacturer supplier issues — the same airbag inflator, the same takata-style ignition switch, the same brake hose material — before they become industry-wide recalls. When you see a single component accumulating large complaint volume across several unrelated nameplates, that is usually a signature of a shared supplier or a shared federal standard being stressed by real-world conditions. Use the affected-vehicles table below to see whether the pattern is concentrated on a handful of models or distributed evenly, and cross-reference each model's full recall and investigation history before drawing conclusions about any one nameplate.
Most Affected Vehicles
| # | Vehicle | Complaints |
|---|---|---|
| 1 | VOLKSWAGEN EOS | 1 |
| 2 | TOYOTA TACOMA | 1 |
| 3 | NISSAN ALTIMA | 1 |
| 4 | JEEP GRAND CHEROKEE | 1 |
| 5 | HYUNDAI SANTA FE XL | 1 |
| 6 | HYUNDAI PALISADE | 1 |
| 7 | HONDA ODYSSEY | 1 |
| 8 | HONDA CIVIC | 1 |
| 9 | HONDA ACCORD | 1 |
| 10 | FORD F-250 | 1 |
| 11 | FORD ESCAPE HYBRID | 1 |
| 12 | FORD ESCAPE | 1 |
| 13 | FORD EDGE | 1 |
| 14 | CHEVROLET SILVERADO 1500 | 1 |
| 15 | CHEVROLET MALIBU | 1 |
| 16 | BMW X3 | 1 |
| 17 | AUDI A5 | 1 |
Recent Complaints
The contact owns a 2024 Ford Escape. The contact stated that the front driverâs and front passengerâs side seat heaters failed to adjust the temperature once the heater maintained a high level. Th
The contact owns a 2013 Honda Odyssey. The contact stated that the front driver's side seat heater was malfunctioning. The contact stated that upon engaging the seat heater, the seat heater was interm
The contact owns a 2014 Volkswagen EOS. The contact stated that while operating, a burning odor was present inside the cabin of the vehicle. Later, while operating the vehicle, the front driver's side
The contact owns a 2008 BMW X3. The contact stated while driving approximately 20 MPH with the front driver's seat heater activated, the contact felt a sharp pain on the buttock and immediately leaned
The contact owns a 2024 Ford Edge. The contact stated while using the front driver's side seat heater, the seat heater failed to function as intended and burned the contact's lower back. The contact r
The contact owns a 2008 Jeep Grand Cherokee. The contact stated that upon returning to the vehicle, the contactâs daughter noticed that the front driver's side seat was smoldering. The contact state
The contact owns a 2014 Audi A5. The contact stated that a burn spot was discovered on the seat section of the front driver's seat. The contact indicated that days later the burn mark had developed in
The contact is an attorney who represented the owner of a 2018 Honda Civic. The contact stated that the client had taken pain medication and fell asleep in the driver's seat with the seat heater activ
The contact owns a 2019 Ford F-250. The contact stated while driving 40â45 MPH, the front passengerâs side seat started to smoke. The driver was able to pull over. The contact noticed that the hea
1) Drivers seat moves while driving. 2) Seat positioning failure. Failure causes seat to move back increasing length from pedals. Made it harder to reach the gas and brake pedal. Unsafe to drive whil
2019 HYUNDAI SANTA FE XL- I feel something should be done against Hyundai. I could have easily been killed by their failure in one area. Vehicle wiring harnesses. Are you aware that the wiring systems
The contact owns a 2020 Nissan Altima. The contact stated while the vehicle was at a standstill in a parking lot and using the seat heater for approximately 30 minutes, the front driverside seat heate
The contact owns a 2021 Ford Escape. The contact stated that after driving for an hour and parking the vehicle, after picking up her coat from the passengerâs side seat she saw a burn mark on the se
The contact owns a 2009 Chevrolet Malibu. The contact stated while exiting a parking lot, the contact smelled a burning odor and felt her leg burning. When the contact exited the vehicle, she became a
The contact owns a 2017 Toyota Tacoma. The contact stated that while driving or idled, the front driverâs side seat heater failed to operate. The contact then stated that he smelled a burning odor a
The contact owned a 2020 Chevrolet Silverado 2500. The contact stated the seat heater was disengaged but failed to respond, causing the seat to remain hot. There were no warning lights illuminated. Th
The contact owns a 2017 Honda Accord. The contact stated while entering and starting the vehicle, the front driverâs side and passengerâs side seat warmers activated inadvertently and remained on
Related Vehicle Components
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Frequently Asked Questions
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Data Sources
Vehicle complaint data from the National Highway Traffic Safety Administration (NHTSA) complaints database. Includes consumer-reported safety issues filed with NHTSA Office of Defects Investigation. Severity counts cross-reference NHTSA FARS (Fatality Analysis Reporting System) for fatal incidents where a corresponding FARS record exists.
Component categories are standardized by NHTSA. Crash-test ratings where shown are drawn from the NHTSA New Car Assessment Program (NCAP). Complaint counts, crash reports, fire reports, and fatality data reflect consumer-submitted reports and may not represent all incidents.
Disclaimer: This data is for informational purposes only and should not be used as the sole basis for vehicle purchase decisions. NHTSA complaint data is self-reported by consumers and has not been verified or investigated. A high complaint count does not necessarily indicate a defect. Always consult a qualified mechanic and check official NHTSA recall notices before making safety-related decisions.
Read our methodology — how this data is sourced, computed, and verified.