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 Message
If a fault is registered (certain diagnostic trouble codes (DTCs) only), the Power Steering Control Module (PSCM) (6/164) will inform the central electronic module (CEM) (4/56) that there is a fault in the power steering system via the controller area network (CAN). The central electronic module (CEM) then transmits a request via the controller area network (CAN) to the driver information module (DIM) (5/1) to light the information lamp and to activate a text message in the display. The text message informs the driver that there is a fault in the power steering system. When the fault has been remedied, a request is transmitted in the same way to switch off the information lamp and deactivate the text message.
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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.