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
General Diagnostic Table: Inspection
| SYMPTOMS | POSSIBLE CAUSE | CORRECTIVE ACTION |
|---|---|---|
| AT select lever | Starter does not run. | Adjust the select cable and inhibitor switch, or inspect the circuit. |
| Back-up light does not illuminate. | Adjust the select cable and inhibitor switch, or inspect the circuit. | |
| AT shift lock system does not operate normally. | Adjust the select cable and inhibitor switch, or inspect the circuit. | |
| Manual mode can not be set. | Inspect the mode switch and select lever, or inspect the circuit. | |
| MT gear shift lever (STI model) |
Cannot shift into reverse. | Adjust the reverse check cable. |
| Can shift into reverse when the slider is not pulled up. | Adjust or replace the reverse check cable. | |
| Slider cannot be pulled up or sticks in the pulled-up position. |
|
|
| MT gear shift lever (Except for STI model) |
Cannot shift into reverse. | Adjust the MT gear select cable. |
| Shifted to 6th though it shifted to reverse. | Adjust or replace the MT gear select cable. | |
| Can shift into reverse when the slider is not pulled up. | Adjust or replace the MT gear select cable. | |
| Slider cannot be pulled up or sticks in the pulled-up position. |
|
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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