NHTSA Complaint #11512057 — 2016 TOYOTA TACOMA

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.