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.
2022 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE
Inspection Mode 9
| DTC | Description & trouble part | Note |
|---|---|---|
| B2B21 | PASSENGER'S DOOR POWER WINDOW MANUAL UP SWITCH STUCK | - |
| B2B31 | RR DOOR POWER WINDOW MANUAL UP SWITCH STUCK | - |
| B2B41 | RL DOOR POWER WINDOW MANUAL UP SWITCH STUCK | - |
Diagnostic procedure:
- Using the Subaru Select Monitor, perform the clear memory of [Power Window (Passenger)], [Power Window (Rear Right)] or [Power Window (Rear Left)]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
- Using the Subaru Select Monitor, read the [Power Window (Passenger)], [Power Window (Rear Right)] or [Power Window (Rear Left)] DTC and check that the concerned DTC is not displayed. Ref. to POWER WINDOW (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .NOTE: If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1.
- Using the passenger's side, rear right or rear left power window switch, operate the manual up feature and check that the window rolls up.
- Using the Subaru Select Monitor, read the [Power Window (Passenger)], [Power Window (Rear Right)] or [Power Window (Rear Left)] DTC and check that the concerned DTC is not displayed. Ref. to POWER WINDOW (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
NOTE:
If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.
Factory Service Tools
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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.