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.
Body Control System Description and Operation (Steering Column Control Module): SCCM
The steering column control module (SCCM) is the module on the steering column which, amongst other things, contains the ignition lock and the turn signal and wiper switches. It combines the following sub-systems (some of which are optional).
Immobilizer, steering wheel controls, transponder aerial, ignition lock, turn signal stalk, main/dipped beam stalk, cruise control stalk, Info Display buttons, windscreen wiper stalk, radio receiver for the key remote control, steering angle sensor, horn button, PEPS start button (passive entry passive start system) and ESCL (electric steering column lock). The SCCM has been developed to reduce the complexity of the wiring and reduce the weight of the steering column.
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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.