VOLVO
AUM-49FD - Control module. Faulty installation. Permanent fault
System
Audio Unit Module (AUM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (4)
What does this fault code mean?
The radio settings in the audio control module (AUM) disagree with the vehicle information held by the central electronic module (CEM). The fault is present now. It occurs because the audio control module software does not match the car's settings, so the desired radio frequencies cannot be kept.
Possible causes
- Incorrectly installed audio control module (AUM)
- Faulty configuration in the central electronic module (CEM)
What you can do
- 1Find out whether the audio control module or its software has recently been changed
- 2Have a workshop download the correct software to the audio control module (AUM)
- 3After the update, check that the radio works and clear the code
Symptoms you may notice1
- The desired radio frequency cannot be retained
General guidance for car owners. Diagnosis on the car can point to a different cause.