2026 Toyota Tundra Powertrain (other) Problems

What component or system failed or malfunctioned, and is it available for inspection upon request? The electronic throttle control system (drive-by-wire) and Transmission Control Module (TCM) calibration. When accelerating from rolling stops or yields (0–10 mph), the vehicle experiences a severe dead-pedal delay with zero engine or transmission response for 1.5 to 2.5 seconds before surging forward. The unmodified vehicle is fully available for inspection. How was your safety or the safety of others put at risk? The failure creates an immediate crash hazard during left turns across traffic, entering roundabouts, and yielding into highway merges. Pressing the accelerator to merge into traffic produces no acceleration, leaving the truck stranded across active travel lanes. Approaching cross-traffic must brake aggressively to prevent broadside/T-bone collisions. The unpredictable delay followed by an abrupt power surge severely impairs low-speed vehicle control. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. An authorized Toyota dealership service department test-drove the vehicle and confirmed the low-speed hesitation/dead pedal. The dealer stated no fix or calibration exists for this model year because the vehicle has the latest factory TCM software (prior TSBs do not apply) and designated it an "inherent operational characteristic." Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, inspected and diagnostic-scanned by certified technicians at an authorized Toyota dealer. No DTC codes were stored; the failure is in the factory throttle logic and transmission management calibration. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning lamps, dash alerts, or trouble codes appeared. The symptom presented immediately at initial delivery and recurs consistently in ALL MODES

NHTSA ID

11767207

Incident

Sep 26, 2026

When breaking towards a stop and deciding that you can now instead accelerate, you’ll press the gas pedal and the vehicle will occasionally feel like there’s a delay in registering that you want to accelerate instead of continuing to break

NHTSA ID

11762960

Incident

Aug 22, 2026

Since taking delivery of this brand new 2026 Toyota Tundra Hybrid, I have experienced a persistent shuddering at low speeds, approximately 15 to 25 mph. The shuddering is most pronounced during slow, gradual brake application — the more gently the brake pedal is pressed, the more severe the shudder. It is also present to a lesser degree during acceleration. The issue appears to involve the transition between the regenerative braking system and the conventional friction brakes in the i-FORCE MAX hybrid system. The vehicle was taken to an authorized Toyota dealership for a first repair attempt. Tires were rebalanced and inflated to 40 PSI, exceeding the manufacturer's recommended specification. The repair order was closed with the notation "test drove and vibration is gone." This conclusion is inaccurate. The shuddering was only partially reduced — the root cause was not identified or resolved. The safety concern is significant. I have found myself instinctively adjusting how I apply the brake pedal to avoid triggering the sensation. A vehicle that changes the way its driver brakes is dangerous. A second repair attempt is being scheduled at the selling dealership.

NHTSA ID

11761521

Incident

Aug 22, 2026

Full engine failure, Rod bearing 1 failed due to debris in engine after first oil change was completed at 9500 miles. Truck at 13,000 miles at failure Safety of all vehicle occupants was put at risk. vehicle came to sudden hault and had full loss of propulsion. Failure of engine was confirmed by Matick Toyota No warming lamps of mesages, small whine came from engine for ~1 mile before failure

NHTSA ID

11761022

Incident

Aug 9, 2026

When you almost stop but then hit the gas there is a dead petal. The vehicle doesn’t accelerate. Then you almost get t boned. They know about the problem but say everything is fine. It’s traction control. It is not. I guess I will have to sue if I survive the crash.

NHTSA ID

11753954

Incident

Jun 3, 2026

This is a reoccuring issue and happens daily. When the vehicle is cold and sitting all day or all night, on the first 5 minutes of driving or so, when you push the accelerator pedal from a dead stop or rolling stop, there is no throttle/engine response for at least 1.5-2 seconds. This is a HIGHLY unsafe condition and can lead to a traffic collision. I have reached out to Toyota Corporate about this and they said to bring it into my local dealer, Dick Hannah Toyota in Kelso, WA to perform the rolling stop TSB that is out on these Tundra Trucks. I received information from Dick Hannah that when they went to perform the procedures to take care of this TSB, that it had already been done and that there was nothing they could do further. They asked me to document the conditions to try and get Toyota Corporate to do something about it. I asked if there wasn't a recalibration they could do or anything else to make this condition improve, and they said no there is not. I expressed my concerns saying that there is nothing to document, that this happens everyday and is a daily occurence whenever the vehicle has been sitting for a long period of time. I have reached out to other vehicle owners on vehicle forums on the internet that are experiencing the same exact problems with no remediation from Toyota Dealers or Toyota Corporate. I was even offered to get into a split to hire a lawyer to get this unsafe condition remedied. This is a big deal and should not be overlooked and written off by ANYBODY.

NHTSA ID

11751956

Incident

Jul 20, 2026

From date of purchase… when truck accelerates from dead stop, drive train shudders for several seconds before fully engaged. Suspect issue related to software, hybrid enterface with drivetrain, torque converter not locking up. Dealer verified condition with test drive. Concluded it was operating normally. I don’t buy this explanation. Is it going to fail me entering traffic? Will it get progressively worse?

NHTSA ID

11744917

Incident

Jan 28, 2026

The vehicle is either unresponsive or has a severe throttle delay from a stop or a very low speed, creating is a major safety issue. This could leave the vehicle in a position to not be able to accelerate, and risks becoming a hazard to other traffic, particularly at intersections. Understanding that a TSB is available for a transmission code reflash to resolve this issue, dealers are denying the repairs stating that they are unable to reproduce the issue in their limited test drives. It is not possible to predict when these severe hesitations occur, so reproducing the issue occurs on an unknown basis.

NHTSA ID

11740735

Incident

Jan 31, 2026