Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2016 Toyota Tacoma owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2016 Toyota Tacoma. The contact stated while driving at 60 MPH, the contact noticed their front driver seat warmer stop operating and started smelling an electrical burning. The contact continued to drive to their residence where at that time the contact inspected the vehicle and noticed the seat heater amp connection wiring was burned out. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 63,404.
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.
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.
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.
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.
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
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.
Vehicle has been jerking itself while driving at both low speeds and high speeds. Had taken it to the dealership Sept.2020 in order to get the ECU/PCM reflashed/updated to resolve issue; issue persists. Now, at highway speeds, 80% of the time it will be jerking itself, as off being momentarily shut off and on. Caused my rear end to fish tail on highway.
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. …
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. …
Electrical complaints in other Tacoma years
Frequently asked questions
How common are electrical problems on the 2016 Toyota Tacoma?
NHTSA has 37 complaints about the electrical system of the 2016 Toyota Tacoma, 11% of the model year's 324 complaints. The component named most often is wiring (1 mentions).
Is there a recall for 2016 Toyota Tacoma electrical problems?
No. NHTSA lists no electrical system recall for the 2016 Toyota Tacoma, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2016 Toyota Tacoma electrical problems start?
Half of the complaints with a recorded mileage happened before about 35,000 miles, and 44% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 3 fires and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.