VOLVO
UEM-0064 - Sunroof. Signal too high
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 sun roof control module registers an internal fault. The reason is that the supply wire for the tilt position of the sun roof has a short to voltage. The electric sun roof then does not work.
Possible causes
- The supply wire for the tilt position of the sun roof has a short to voltage
What you can do
- 1Try to move the sun roof to its end positions.
- 2Use a multimeter to check that the wire between the sun roof control module and the roof lamp has no contact with voltage.
- 3Look for damage and pinched spots on the wiring running from the sun roof switch to the roof lamp.
- 4Check that the connectors in the sun roof control module and in the roof lamp are firmly seated and not oxidised.
- 5If the fault remains, have a workshop replace the sun roof switch.
Symptoms you may notice1
- The electric sun roof does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.