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.
SCCM Control Unit: Notes
The steering column control module (SCCM) control unit has two CAN interfaces, one to the low-speed CAN bus and one to the high-speed CAN bus. It is used as the interface between the high-speed bus and the low-speed bus to exchange information between the CAN buses. All components of the SCCM, except the ignition key with its RF receiver/transmitter (transponder), are directly connected to the SCCM control unit (plug connection) and therefore require no additional wiring.
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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.