2025 Toyota Tundra power train problems

“Vehicle Information: 2025 Toyota Tundra CrewMax 1794 Edition 4x4 (i-FORCE MAX Hybrid) VIN: [XXX] Component: Power Train / Automatic Transmission / Hybrid Propulsion System Description of Defect: I have discovered an active fluid leak originating from the transmission/bell housing area on my vehicle. There are currently no dashboard warning lights illuminated, and the transmission is not yet slipping or shifting roughly. However, the vehicle is actively dripping fluid onto the ground and undercarriage components from the powertrain assembly. Safety Risk: A transmission fluid leak on a high-pressure 10-speed automatic transmission presents an immediate safety hazard. If the transmission fluid level drops too low while driving at highway speeds, it can cause sudden power loss, transmission lock-up, or catastrophic mechanical failure, increasing the risk of a crash. Furthermore, transmission fluid leaking onto hot exhaust or hybrid electrical components poses a severe vehicle fire risk.”

“Mutplie times am have a delay on the accrelations have taken it to the dealer to be told thats just how the hybirds are this can cause a crash there should not be a delay when trying to speed up”

“On July 20, the vehicle experienced a catastrophic mechanical failure resulting in a total engine seizure while operating. The failure caused an immediate, sudden loss of motive power, forcing the vehicle to become completely immobilized on the Interstate highway. This unexpected loss of propulsion created an immediate and severe highway crash hazard for myself and surrounding traffic. The vehicle was towed to an authorized Toyota dealership on July 20 under the 5-year/60,000-mile factory powertrain warranty. The vehicle has remained completely out of service since that date. The dealership has tentatively scheduled the engine repair and replacement to begin on August 24 or 25, meaning the vehicle will have been non-operational and out of service for over 35 consecutive days before repairs even commence.”

“I have experienced a severe hesitation or delay in acceleration when accelerating from a stop or near-stop condition. While the issue has only occurred a few times over the past several months, on multiple occasions it happened while merging into traffic and nearly resulted in an accident. Toyota has issued Technical Service Bulletin (TSB-0032-26) addressing this condition. However, when I brought my vehicle to the dealership, Toyota documented that they were unable to reproduce or confirm the hesitation, and no repair was performed. This defect presents a significant safety risk. Unexpected loss of acceleration during traffic merges, intersections, or other situations requiring immediate power can place drivers and passengers in danger and could lead to serious injury or death. Given the safety implications and the fact that the remedy appears to be a software update requiring less than an hour to perform, I believe this issue warrants a formal safety recall rather than a voluntary Technical Service Bulletin. I urge NHTSA to investigate this matter and require Toyota to provide a recall remedy for all affected vehicles.”

“Problem - throttle lag/hesitation/lurch. Truck won't go when throttle is pressed for a couple seconds cold or hot. Mentioned the problem on my 5000 mile service. Service tech said he could not reproduce the problem but happens with my drives 95% of the time. No warning lights have appeared.”

“The issue I’m having is the transmission/engine when it comes to the hesitation for stopping and either slowing down or just a rolling stop. Sometime I would feel like I need to precisely control the brake pedal in order to go smooth stop, but no. It feels like it’s ’jumping’ in mini burst. I have the hybrid engine of the V35A-FTS. I did check for recalls but nothing found but found a TSB from Toyota T-SB-0032-26, but my hybrid is not covered, only the non-hybrid Tundra. Please help. Thanks”