Network
generic / SAE
U0194
Lost Communication with Personal Assist Module
The infotainment bus has lost the voice assistant / personal assist module. Voice commands and connected concierge features stop working.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 94
Possible causes
- Assist module unpowered or hung 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: 60–500 €
- Estimated time: 0.3–2 h
- Component: voice assistant module
- Component: infotainment bus
Sources
References
sae:J2012