U0104
NetworkModule Communicationmoderate severityLost Communication with Cruise Control Module
What U0104 Means
Cannot communicate with the cruise control module.
Symptoms
- Cruise control inoperative
- Cruise light not illuminating
- Adaptive cruise not available
- Speed not maintained
Common Causes
- Cruise control module failure
- CAN bus wiring issue
- Clockspring failure
- Fuse blown
- Steering wheel button failure
Diagnostic Steps
- Check cruise control fuse
- Test module power and ground
- Check clockspring continuity
- Inspect steering wheel button connections
- Check CAN wiring to module
Where to start: Check clockspring (common failure) and fuses. Test steering wheel controls.
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