Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
On-Vehicle Inspection [12/2024 - ]: Procedure
2025 Toyota 4Runner SR5, RWDSECTION Procedure
- INSPECT VACUUM SENSOR ASSEMBLY
- Start the engine.
- Turn the ignition switch off.
- According to the display on the GTS, read the Data List.
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 (150 mmHg, 5.91 in.Hg) or more.
HINT:
- Standard atmospheric pressure is 101 kPa (758 mmHg, 29.8 in.Hg).
- For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by 1 kPa (8 mmHg, 0.295 in.Hg).
- Atmospheric pressure varies with weather.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.