Network
generic / SAE
U0237
Lost Communication with Sunroof Assembly Control Module
The body bus has lost the sunroof assembly module. Pinch protection and tilt/slide functions cannot be commanded.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 37
Possible causes
- Water ingress high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–700 €
- Estimated time: 0.5–3 h
- Component: sunroof module
- Component: lin wiring
Sources
References
sae:J2012