VOLVO
UEM-0070 - Sunroof. Signal faulty
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 cause is that the AUTO and TILT signals from the sun roof arrive at the same time. The electric sun roof then does not work.
Possible causes
- The AUTO and TILT signals from the sun roof arrive at the same time
What you can do
- 1Try running the sun roof to both of 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.
- 3If a fault is found in the wire, replace it.
- 4Look for chafed spots and loose contacts at the sun roof control module and the roof lamp.
- 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.