U0149
NetworkModule Communicationlow severityLost Communication with Seat Control Module C
What U0149 Means
Cannot communicate with the rear seat control module on vehicles with powered rear seats.
Symptoms
- Rear power seat not adjustable
- Rear seat recline not working
- Rear heated seats from module offline
Common Causes
- Rear seat module failure
- Wiring issue
- Power loss
- Fuse blown
Diagnostic Steps
- Check rear seat module fuse
- Test power and ground
- Inspect wiring to rear seats
- Check module connector
Where to start: Check rear seat module fuse and connector access behind rear seat.
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