VOLVO
UEM-0078 - Siren. Configuration fault
System
Upper Electronic Module (UEM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
The code is set when the upper electronic module (UEM) registers that the siren's configuration does not match the car. It appears after a siren has been replaced, when the configuration has not been carried out or has failed.
Possible causes
- The siren was replaced without being configured
- Configuration failed when the siren was replaced
What you can do
- 1Have a workshop configure the siren so that it matches the car.
- 2After configuration, read off the codes and check that UEM-0078 is no longer present.
- 3If a faulty siren is fitted, have a workshop replace it with the correct one.
- 4If the fault remains, have a workshop check that the configuration has been activated.
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.