2016 Toyota Tacoma electrical problems

Filed Oct 19, 2026 · Electrical · 229,000 miles · CA

Odometer Fraud. The contact purchased a 2016 Toyota Tacoma. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 132,000 and at the time of registration, it was discovered that the mileage was 229,000.

Filed Jul 30, 2025 · Electrical · NJ

I am reporting a persistent and unsafe issue with the factory-installed Entune infotainment system in my 2016 Toyota Tacoma. While driving — whether locally or on the highway — the system frequently freezes, becomes unresponsive, or abruptly resets itself, often multiple times per drive. This directly affects my ability to safely use the navigation, backup camera, and audio controls while in motion. The system’s crashes divert my attention from the road, especially when I’m relying on navigation and it either stops functioning or forces me to interact with the screen to regain control. These interruptions increase the risk of distracted driving and could easily contribute to an accident. I have attempted to install the software update provided on Toyota’s official website, but the update is older than the version already installed on my vehicle (0101A0), so the system blocks the update. There is no way for a consumer to reinstall or flash the current version, and any potential resolution is only available at a dealership for a fee, effectively putting the fix behind a paywall. Toyota has not issued a recall or service bulletin for this issue, despite dozens of reports from other owners on Tacoma and Prius forums describing the same crash behavior and software version conflicts. This is a significant safety concern, especially when the infotainment system is used for navigation during high-speed or complex driving conditions. The inability to maintain consistent functionality puts drivers and others on the road at risk. I am requesting that the federal safety agency investigate this widespread issue and press Toyota to issue a free repair or software patch for all affected vehicles. Symptoms: •Frequent infotainment restarts while driving •Frozen or unresponsive touchscreen •Glitched navigation system and lost GPS routing •Driver distraction due to repeated system failure

Filed Sep 30, 2024 · Electrical, Seats · AZ

Seat heating module for my driver seat has melted and is further irrepairable without buying the entire harness to fix the issue. There are multiple reports of this happening across forums.

Filed Mar 15, 2023 · Brakes, Electrical · AK

Vehicle is designed in such a way as to allow moisture accumulating in drivers side floor mat and carpeting to wick upward and be deposited on the primary vehicle wiring harness located in the drivers side kick panel. The moisture collected travels down into the backside of the various female connectors and corrodes the conductors and receptacles that result in short circuits between the various vehicle components including the ignition, engine shutoff, temperature sensors, Antilock Breaking, Blind Spot Monitoring, Fuel Gauge, Forward Vehicle Lighting (high and low beam), Security, Traction Control and other critical vehicle systems. On February 5th, 2023 I returned to my vehicle to find the security alarm sounding in the parking lot of a local business, both the keyless entry system and key-fob were unresponsive and would neither silence the alarm or unlock the vehicle. After manually unlocking the door handle the alarm ceased, the vehicle started as normal and then began indicating a failure of the BSM system, while underway the ABS indicated it had also failed and upon arrival at our destination the engine would not turn off even with the emergency shutdown routine prescribed for unintended acceleration cases. In addition, the high beams would be triggered by unrelated button operation occasionally fail to turn off, the fuel gauge, temperature readouts and climate control provided unintelligible values. The vehicle was returned to to dealership where it was determined that water from the floormats was able to contaminate and cause systemwide failure. The repair was to replace the entire wire harness which would not be covered by warranty. On 3/15/2023 I reached out to Toyota Headquarters' Customer Engagement team and was advised that Toyota was aware of the problem and had no interest or obligation in rectifying the situation, regardless of my concerns that this presented a clear safety hazard to both operators and the general public.

Filed Feb 6, 2023 · Electrical, Seats · 135,998 miles · NY

Driver’s side front seat not delivering heat despite switch lamp indicating it’s on and working. Further exploration reveals passenger side seat heater working as it should. I checked wiring harness and connections under driver’s seat only to discover plastic connector entering amplifier scorched and melted with two of four pins destroyed (Red and Green wires). I believe the wire gauge sized for this system is improper and therefore represents a fire hazard. About the time the seat heater failed, I smelled a burning odor inside the car for a short time but didn’t associate the two events until later. The vehicle has 135,998 miles on it and therefore out of warranty. I spoke to the dealer who explained he’s had similar issues from other customers and added there is no recalls at this time.

Filed Nov 11, 2022 · Electrical, Seats · AZ · fire

While driving down the road with my driver seat warmer on, the heating element and/or associated electronics burned a hole in the seat canvas and through the jacket I was wearing. I think a small fire started which I put out with my finger and then I turned off the seat heater.

Filed Sep 1, 2022 · Electrical · NY

System Failure lost all directional and hazard lights on this vehicle . With no directional signals can cause a serious accident. vehicle is at dealership. component has not been inspected by the manufacture . No warning just stop working. This vehicle has no separate Flasher relay. Toyota did not honor the last request to fix a electrical issue. should be a recall for this issue as other Toyota Tacoma owners had the same issue

Filed Apr 6, 2022 · Electrical, Seats · 45,000 miles · WI

The contact owns a 2016 Toyota Tacoma. The contact stated that while attempting to activate the seat warmer, he noticed that the seat warmer was inoperable. The contact researched and read that the module underneath the seat could potentially burn causing the seat warmer not to operate as designed. The contact stated that it was a common failure. The contact stated that he then looked at the module in his vehicle and saw that it was melted. The contact had not noticed any smoke or a burning odor. The dealer and manufacturer were notified of the failure. The failure mileage was 45,000.

Filed Jan 30, 2022 · Electrical, Seats · UT

The driver's side seat heating element failed due to a defective seat heater amp. When independently researching the failure, which could have simply been an unconnected wire, I discovered the amp and wiring had an electrical seizure and the wiring had burned the amp. The heating amp sits underneath the seat and with the right conditions could cause the seat to catch fire. The issue has been reported to Toyota corporate.

Filed Jan 20, 2022 · Electrical · NC

Rear power window rattles when in down position. Most notable when closing door, sounds like some has come loose!