Lexus RX450h brake noise issue while parked on Lexus RX450h

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

Problem overview

Some Lexus RX450h owners report experiencing brake noise issues, such as a squawk or knocking sound from the engine compartment when releasing or depressing the brake pedal. This noise, which may occur in models from 2010 to 2021, could be attributed to small amounts of air trapped within the brake actuator assembly. It is crucial not to overlook these unusual brake noises, as they may indicate a malfunction in critical vehicle systems. Owners are encouraged to pay attention to any brake irregularities, regardless of how minor they may seem, to prevent potential complications. Additionally, some drivers find that the noise can be intermittent, making it difficult to replicate during service visits. It is advisable for those experiencing these issues to have their vehicle inspected by a qualified technician for proper diagnosis and resolution.

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