Abnormal Noise is Heard from the Engine Compartment when Depressing the Brake Pedal [10/2018 - ]: Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
Troubleshooting for when abnormal sound occurs from the engine compartment due to air when the brake pedal is depressed.