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.
Fault-Tracing Information
The steering wheel module (SWM) is initiated when the steering wheel is turned more than 5° in any direction. The diagnostic trouble code (DTC) may be stored if the car has been driven for more than 2 minutes without turning the steering wheel. Discuss with the customer if this might be a possible reason for the diagnostic trouble code (DTC) being stored.
If diagnostic trouble code (DTC) BCM-A030 is stored, fault-tracing must be carried out according to the relevant information.
Is diagnostic trouble code (DTC) BCM-A030 stored?
- YES
OKAY: Troubleshooting has been completed.
- NO
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:
- • 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.