2023 Toyota Tundra electrical system problems

“2023 Toyota Tundra. On July 20, 2026 and again on September 18, 2026, while driving, the truck suddenly lost power and went into limp mode. The dash showed 'Check Engine / Reduced Engine Power / Visit Your Dealer' at about 43,440 miles. The truck had to be towed to the dealer on a flatbed. Losing power without warning in traffic is a serious safety risk. Other ongoing problems: the brakes squeaked for over a year before they were fixed, the driver seat bolster plastic is broken (this would be the third repair), the radio volume knob has failed, and there is excessive wind noise. This VIN still shows open recall 25V767 (engine machining debris causing loss of motive power), which has not been performed despite two dealer visits for this exact failure.”

“The contact owns a 2023 Toyota Tundra. The contact stated that while starting the vehicle, the check engine, Auto Start/Stop, and another unknown warning light illuminated. The message "Grill Shutter Malfunction Low Voltage" was displayed. The vehicle was taken to the dealer, who determined that the battery sensor, alternator, and ECU had short-circuited. The dealer replaced the battery sensor, alternator, and ECU; however, the failure persisted with the check engine and another unknown warning light illuminated. The vehicle was taken back to the dealer, who determined that the grill shutter needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 57,000.”

“Multiple vehicle systems have malfunctioned, including the transmission, infotainment/display screen, and backup camera. Most recently, the backup camera has stopped functioning, preventing a rear view while reversing. The vehicle is available for inspection upon request, along with any service records documenting prior repair attempts.The transmission issues created an unsafe driving condition due to unpredictable shifting and hesitation. In addition, the backup camera is no longer functioning, significantly reducing rear visibility while reversing and increasing the risk of striking a pedestrian, child, vehicle, or object. These defects pose a safety risk to both the driver and others around the vehicle.The vehicle has been presented to an authorized Toyota dealership on multiple occasions for repair of various issues. Most recently, I sought service for the inoperative backup camera but was refused service. Previous concerns have been documented through dealership service visits.The vehicle has been inspected by an authorized Toyota dealership during previous repair attempts. It has not been inspected by police or insurance representatives.The vehicle…”

“While driving the vehicle on a public roadway at approximately 70mph, the vehicle suffered a sudden and catastrophic powertrain failure without timely warning. The check engine light illuminated, the physical engine oil pressure gauge dropped to absolute zero, and the dashboard immediately flashed a critical "Hybrid System Malfunction" warning. > This mechanical and electrical failure triggered an instantaneous, total loss of motor power while traveling live lane with traffic behind me. The vehicle immediately stalled and became a completely inoperable, unresponsive rolling hazard. The vehicle failed to restart and left me stranded on a narrow shoulder which was very hazardous as traffic coming at high speeds could have easily rear ended me. The vehicle required a flatbed tow to an authorized Toyota dealership, and after submitting a case with corporate hoping for a trade assist(as my wife no longer feels safe in this chassis), I have been told it will take up to 45 days to process this request. I made a significant investment in this vehicle in January of 2023 and have since methodically kept up with maintenance, with hopes this vehicle would last me 10+…”

“The 2023 Toyota Tundra Hybrid’s powertrain design may be insufficient to maintain basic safety maneuvers (specifically "limp mode" or emergency clearing) during an engine failure while operating under high-load conditions in mountainous terrain. This creates a life-threatening hazard for the occupants and other motorists. ​Statement of Fact: As an owner of a 2023 Toyota Tundra Hybrid, I primarily utilize this vehicle to tow a 9,000 lbs travel trailer through the high-altitude, steep-grade regions of Utah. These routes frequently consist of narrow, two-lane mountain passes with no shoulders and steep drop-offs. ​ ​Failure Under Stress: Engineering logic suggests that engine stress is highest during heavy towing on steep grades. If a primary engine failure occurs in these conditions, the hybrid system’s battery and electric motor capacity are, in my experience, inadequate to move a combined Gross Combined Vehicle Weight (GCVW) of approximately 15,000+ lbs to a safe location. ​While the hybrid system may allow a light, unladen vehicle to limp to a shoulder under "ideal conditions," it lacks the torque and sustained power to move a heavy trailer on a grade once the…”

“I received recall (Nov 2025) for engine replacement due to safety failure of the engine and toyota still does not have replacement. Also received recall for reverse lights that are still not avaialble (feb 2025)”