VOLVO
AUM-4403 - 4 disc CD changer. MD/CD servo fault. Intermittent fault
System
Audio Unit Module (AUM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (1999–2006), V70 (2000–2008)
Show models by year and engine (2)
What does this fault code mean?
The audio control module (AUM) has registered that the signal read from the four-disc changer is poor, or that the disc is spinning unevenly. The fault is intermittent and may have occurred before without being active now. The cause is usually in the changer's reading section or in a damaged disc.
Possible causes
- Reading fault in the four-disc changer
- Defective four-disc changer
- Defective CD disc
What you can do
- 1Note the code, clear it and road test to see whether it comes back
- 2Try a clean, undamaged disc
- 3If the fault returns often, have the four-disc changer checked by a workshop
Symptoms you may notice2
- No sound playback from the four-disc changer
- Error message shown in the audio unit display
General guidance for car owners. Diagnosis on the car can point to a different cause.