Network
generic / SAE
U0179
Lost Communication with Power Liftgate Control Module
The Power Liftgate Control Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The powered tailgate stops operating automatically. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 79
Possible causes
- Liftgate module unpowered high
- Wiring through liftgate hinge broken 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: medium
- DIY: shop recommended
- Estimated cost: 80–1000 €
- Estimated time: 1–4 h
- Component: power liftgate module
- Component: can bus wiring
Sources
References
sae:J2012