On high-temperature days, when the A/C is running at full capacity, the vehicle occasionally fails to accelerate from a stop. This issue persists even after applying the recommended ECM update. The lack of reliable acceleration poses a significant safety risk, particularly when turning across oncoming traffic or entering a busy street. This situation can leave the vehicle stalled in the path of approaching vehicles, increasing the likelihood of an accident.

- Aberdeen, MD, USA

Sometimes the vehicle will be very sluggish when accelerating from a stop, it is hard to replicate, and inconsistent.

- Georgetown, TX, USA

When accelerating from a stop, there is a hesitation or lack of power when stepping on the accelerator. Releasing the accelerator and depressing it again will get the car going. The engine also revs high at low speeds before dropping to the next gear.

- New Orleans, LA, USA

when moving from a full stop, the car sometimes has hesitation to move to a full speed.

- Staten Island, NY, USA

**Vehicle:** Toyota Grand Highlander Hybrid Max **Issue:** On high-temperature days, when the A/C is running at full capacity, the vehicle occasionally fails to accelerate from a stop. This issue persists even after applying the recommended ECM update. **Safety Concern:** The lack of reliable acceleration poses a significant safety risk, particularly when turning across oncoming traffic or entering a busy street. This situation can leave the vehicle stalled in the path of approaching vehicles, increasing the likelihood of an accident. **Action Taken:** Applied the ECM update that is supposed to resolve the issue, but the problem persists.

- Centennial, CO, USA

Starting off from a stop or at low speeds the vehicle loses all power. Engine stumbles and does not respond, when it happens it almost feels like the engine may stall. Pressing the accelerator and the vehicle will not move, then suddenly will start to go seconds later. This has almost resulted in a crash since the vehicle loses all propulsion unexpectedly. No warning lights. Took to the dealer twice and everything is -??normal-?? no codes stored.

- Erie, PA, USA

Our vehicle loses power after initial startup when you first accelerate. We have had three incidents where we were pulling out from a stop sign or stoplight on a major road and you press the gas and the car shutters and doesn-??t move at all. All three times a car accident almost occurred. This has been reported to the dealer and they replaced the entire hybrid powertrain. The issue persists at random with no warning messages generated by the car. It also hasn-??t been replicated for a dealer to see themselves. It-??s extremely dangerous and has been reported numerous times on forums.

- Tucson, AZ, USA