2024 Toyota Tundra

[XXX], [XXX] PM. 2024 Toyota Tundra Hybrid (i-FORCE MAX, V35A engine), 36k miles, original owner. Clear, dry pavement, evening daylight. Exiting [XXX] westbound at [XXX] , I merged into the far right lane at the second light for a right turn. A vehicle was stopped ahead at the light. Traveling 15-20 mph, I applied the brake for controlled deceleration. Right foot squarely on brake, not touching accelerator. Vehicle did not decelerate as expected. For 3-4 seconds the brake felt unresponsive — pedal felt soft and loose, lacking normal firmness. I pressed the brake fully to the floor. A dashboard warning appeared: “gas and brake pedals are being pressed simultaneously.” I was not, and had not been, touching the accelerator. I then heard engine RPM increase audibly, consistent with an acceleration command, while my foot remained fully on the brake. I felt forward thrust working against my braking. The warning cleared and brakes engaged. Vehicle stopped approximately half a car length from the vehicle ahead, narrowly avoiding rear-end collision. Automatic Emergency Braking did NOT engage despite conditions clearly meeting its criteria — stationary vehicle directly ahead, my vehicle approaching at 15-20 mph with no observable deceleration for 3-4 seconds. No collision warning sounded; no auto-braking intervened. Notably, this same AEB has previously engaged falsely in benign situations (e.g., backing near low vegetation), suggesting reliability/calibration issues. Prior manufacturer notice: On [XXX] at 15,412 miles, I reported to Camelback Toyota, Phoenix (RO #[XXX], on file): “vehicle lurches forward going from reverse to drive (now more consistent)” — dispositioned by tech 10210 as “vehicle is operating to spec,” no diagnosis performed. Same RO documented “rattling in neutral/at stop” — dispositioned “unable to duplicate.” Toyota was on notice of throttle-response symptoms 21 months before this safety event. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

THROTTLE BODY WAS REPLACED, NO DEALER ADVICE TO REPLACE DRIVING DOWN THE ROAD ALL OF A SUDDEN MY VEHICLE WENT FROM HIGHWAY SPEEDS TO LIMP MODE ON THE MIDDLE OF THE HIGHWAY AND A WHOLE BUNCH OF WARNINGS CAME ON SECONDARY BRAKE SYSTEM FAILURE, HYBRID CONTROL FAILURE , STOPED ON THE SIDE OF ROAD TRUCK STALLED THEN RESTARTED NORMAL THEN ALL WARNINGS CAME BACK AND BACK TO LIMP MODE, PROBLEM COMFIRMED BY DEALER IN EL PASO ALMOST 300 MILES AWAY FROM HOME, NOT SURE WHO THE DEALER SHOWED TO , AND NO PRIOR WARNINGS AT ALL BEFORE THIS HAPPEND AT 51K MILES ON MY 2024 TOYOTA TUNDRA.

approaching a round about at a slow rate of speed, prior to entering I noticed there was time to safely enter the round about ahead of a car also entering the roundabout from another direction. I pushed the accelerator pedal to about 30% at the time I choose to enter the traffic circle and attempted to enter. The truck did nothing in response except keep rolling forward due to the momentum I already had while approaching the round about / traffic circle. After about 2 seconds, I pressed the pedal to about 70%. This still did nothing for about another 1 second, before the truck accelerated as if I had pressed the pedal to 70% from a stop. fast acceleration into the round about which caused a narrow miss between me and the original car mentioned that was also entering the traffic circle.

Very commonly when the truck is “cold” after sitting overnight, the truck fails to accelerate from a stop while pushing the accelerator pedal down gradually (such as when leaving a stop sign at an intersection. This lack of acceleration makes me feel a loss of control as I cannot get the truck to accelerate. For example, driving out of my neighborhood into oncoming road traffic I feel as if the truck doesn’t sense my pedal input. The truck just “floats” for at least a few seconds before the pedal reaches a point where the truck recognizes the input and activates acceleration. I can see this situation causing a safety hazard such as when trying to gain speed from a stop. The dealerships says it’s a non-issue and normal for a turbo-charged engine. I have owned cars with turbo-charged engines and have never experienced this bad of lag before. I don’t feel this is normal. My truck currently has no engine issues and is maintained routinely.

I am an automotive engineer. I have been involved with vehicle development programs in the disabled vehicle conversion community for over two decades and have numerous patents in that space. I have been involved with vehicle testing and calibration as well. My vehicle demonstrates a SIGNIFICANT HESITATION when the accelerator is pressed that is not consistent. I live in a roundabout dense location where timing an entry into a roundabout is easy using a normal vehicle. The 1 to 2 second hesitation where there is throttle input and no action at all from the vehicle (engine does not rev, no motive power observed) is very dangerous. I took this up with Toyota and my vehicle was checked out and "learning transmission" memory was wiped clean with me being the only driver was the remedy. The issue got better for a short time but is back and this morning I pulled out thinking there was plenty of time in front of a bus a good distance away and the lack of motive power for a full second or two resulted in a near miss. This vehicle has about 20,000 miles and was purchased by me new. There are NO WARNING LAMPS, and no DTCs thrown when this happens. I have seen several videos where people cite the same experience and a website where there is a class action lawsuit in place regarding this issue. This is completely separate from the engine recall issue. I feel as though this issue is a significant safety risk.

The engine repair was a short block only, even thoe the main bearings spun and sent debis threw the engine. #1 rod went as well. Apon recieving the truck back, with in 200 miles, I've had the same hesitation with the engines as I had just before the first engine failed. Took it by the dealer and no issues found. oil preasure stays up and temp normal. I've had many issue with throtle lag sence day one. The milage has stayed in the low 11 gpm when before i would get on average 14 to 16. Dealer stated toyota would make it right if the engine fails again. Very unhappy with Toyota as I feel they are just kicking the can down the road.

When at a complete stop, going to pull out, or continue driving, there is a noticable lag to the acceleration. It sometimes does nothing for a few seconds before acceleration. If backing up, then switching to drive,.there is a delay and or a small jerk motion before the vehicle accelerates. This has caused issues when pulling out and vehicles are coming at normal speeds with plenty of time to pull out. The delay has almost caused several accidents.