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
The ABS module monitors vehicle deceleration during adaptive cruise control braking events to prevent an overbraking situation. This DTC sets when vehicle deceleration is greater than a specified target. This is most likely caused by an abrupt stop of the vehicle due to a collision, an extreme driving situation, a mechanical or electrical failure of the adaptive cruise control system or an internal failure of the ABS module. DIAGNOSE all other ABS module DTCs before diagnosing DTC U2108:68. If there are no other ABS module DTCs present, RETRIEVE and REPAIR all CCM DTCs. REFER to the appropriate Cruise Control article. If there are no CCM DTCs, INSPECT the vehicle braking system for a dragging condition or another condition causing rapid vehicle deceleration.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.