VOLVO
REM-6F54 - Unlocking relay, central locking tailgate. Signal missing
System
Rear Electronic Module (REM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
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 rear electronic module (REM) has registered a missing or too low signal on the ground circuit of the unlocking relay coil for the tailgate central locking. The fault may lie in the relay socket contacts, the relay or the control module, and the tailgate does not lock or open.
Possible causes
- Oxidation of the contacts in the relay socket
- The relay is loose or missing
- Faulty relay, with an open circuit or short to ground in the relay coil
- Defective control module
What you can do
- 1Check the relay contacts in the socket for contact resistance and oxidation
- 2If unlocking works after the socket has been checked, the fault was a contact fault in the socket
- 3If the socket is in order, replace the relay with a new one and check whether unlocking then works
- 4Check that the control module has its power supply, and have a workshop check the control module if the fault remains
Symptoms you may notice1
- The tailgate does not lock or open
General guidance for car owners. Diagnosis on the car can point to a different cause.