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.
2018 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
On-Vehicle Inspection
- Inspection of air pressure sensor ASSY
- Connect the SSM4 to the DLC.
- Turn the ignition switch to ON with engine stopped.
- Select the following menu items using the SSM4: [Data monitor] ^[Atmosphere Pressure]
- Read the data monitor.
Criteria: Almost equal to atmospheric pressure
NOTE:- Standard atmospheric pressure is 101 kPa {758 mmHg, 29.8 inHg, 14.6 psig}.
- Atmospheric pressure decreases by 1 kPa {8 mmHg, 0.3 inHg, 0.1 psig} as the altitude increases by 100 m {328 ft}.
- Atmospheric pressure varies according to the weather.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.