VOLVO
KVM-B10C524 - Trunk unlock pull switch. General Signal Failures. Signal stuck high
System
Keyless Vehicle Module (KVM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The pull switch for unlocking the tailgate starts a timer when it is activated. If it has been activated for too long, meaning the signal stays high, the code is stored and the tailgate may not unlock. The code does not say what type of fault it is, but it points to the switch, the button or the wiring.
Possible causes
- The tailgate opening switch has been activated for an unusually long time
- The switch is damaged
- The signal wire has a short to ground
What you can do
- 1Read and note the code, clear it and road test the car to see whether it returns
- 2Check that the relevant fuses are intact
- 3Press the tailgate open button and see whether the tailgate unlocks, and also test with the remote key
- 4If you have a diagnostic tool: read the switch value in live data while you press and release the button
- 5With the ignition off, use a multimeter to check that the wire from the switch is not connected to ground (the body)
- 6Have a workshop replace the switch if the wire is sound
Symptoms you may notice1
- The tailgate does not lock or unlock
General guidance for car owners. Diagnosis on the car can point to a different cause.