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.
DTC U2108: Adaptive Cruise Control: Action
This DTC sets when the actual vehicle deceleration monitored by the ABS module exceeds the CCM deceleration maximum request limit by 1.0 meter per second squared. The CCM sends the message to the IPMA over a private CAN, the IPMA then sends the message to the ABS module over the HS-CAN2. RETRIEVE and DIAGNOSE all CCM and IPMA DTCs REFER to the appropriate Cruise Control article and Rear View Mirrors article.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.