VOLVO
IHU-B104D23 - Switch Volume up/down. General Signal Failures. Signal stuck low
System
Infotainment Head Unit (IHU)
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 volume switch on the wheel is monitored by the infotainment head unit (IHU). If it is held active for too long, which suggests it has jammed, the code is set.
Possible causes
- The volume button has jammed in the pressed position
What you can do
- 1Clear the code and check whether it returns
- 2Check that the fuses are intact
- 3Press the volume button up and down a few times and check that it returns without sticking
- 4If you have a diagnostic tool: read the volume button's value in live data while you press it
- 5If the button keeps sticking, have a workshop check the steering wheel and the button further
Symptoms you may notice1
- Audio buttons on the steering wheel do not work
General guidance for car owners. Diagnosis on the car can point to a different cause.