Toyota Highlander unintended acceleration when slowing down with blind side monitor malfunction on Toyota Highlander

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Toyota Highlander owners report experiencing unintended acceleration while braking, which is often linked to malfunctions in the vehicle's electronic systems controlling the powertrain. This issue may stem from a malfunction in the throttle control mechanism, leading to the vehicle accelerating on its own during deceleration. In such cases, owners are advised to step firmly on the brake pedal with both feet to regain control. Additionally, some owners have reported problems with the blind side monitor system, which requires inspection and repair by a qualified technician to maintain safe driving practices. Promptly addressing these concerns is crucial for ensuring the safety and proper functioning of the Toyota Highlander.

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