Network
generic / SAE
U0135
Lost Communication with Parking Brake Control Module
The vehicle network has lost the electric parking brake (EPB) controller. Auto-hold is disabled, the EPB warning lamp comes on. EPB cannot be released electrically.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 35
Possible causes
- EPB module unpowered high
- CAN wiring to EPB damaged medium
- Gateway module routing CAN messages incorrectly 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: hard
- DIY: shop recommended
- Estimated cost: 80–1500 €
- Estimated time: 0.5–4 h
- Component: epb module
- Component: can bus wiring
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012