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 WRX BaseFACTORY OEM SERVICE PROCEDURE
Read Current Data
- On «Start» display, select «Diagnosis».
- On «Vehicle selection» display, input the vehicle information and select «Confirmed».
- On «Main Menu» display, select «Each System».
- On «Select System» display, select «Brake Vacuum Pump».
- On «Select Function» display, select «Data Monitor».
| Display | Contents to be displayed | Unit of measure |
|---|---|---|
| Atmospheric Pressure | Atmospheric pressure is displayed. | kPa |
| Vacuum Pump Motor | Operation status of vacuum pump motor is displayed. | ON or OFF |
| Vacuum Pump Motor Relay | Operation status of vacuum pump motor relay is displayed. | ON or OFF |
| Brake Booster Pressure | Brake booster pressure is displayed. | kPa |
NOTE:
For detailed operation procedures, refer to "Application help".
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.