On-Vehicle Inspection [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT VACUUM SENSOR ASSEMBLY
- Start the engine.
- Turn the ignition switch off.
- Turn the ignition switch to ON.
- Enter the following menus: Powertrain / Stop and Start / Data List / Brake Boost Pressure.
Powertrain > Stop and Start > Data List
Tester Display Brake Boost Pressure - Compare the "Brake Boost Pressure" values before and after the brake pedal was depressed 5 times.
Standard
Internal pressure changes by 20 kPa (0.2 kg(f)/cm2 , 2.9 psi) or more.
If the result is not as specified, replace the vacuum sensor assembly.