Description, Operation, And Checking Function
Symptom and function description:
The following conditions must be met in order for the Central electronic module (CEM) to permit locking and unlocking using the remote key:
- The battery in the remote key must have sufficient voltage. If the battery starts to deteriorate, the transmission strength is reduced.
- The remote key must be within a radius of 20 m from the vehicle's Remote Receiver Module (RRX).
- All doors should be shut and the car should be locked.
How many doors and hoods are to be locked and unlocked, when using the remote key and the exterior flashing indication, can be programmed on the Infotainment control module (ICM).
It has become apparent that in some cases function failure occurs in the system when communications between the Remote Receiver Module (RRX) and the remote key are affected by interference. On account of increased radiation in the surroundings, e. g. from TVs and radio transmitters, mobile phones, electric meters that are readable remotely, etcetera, on rare occasions interference may affect the signal from the remote key.
Verification
Check the central locking system by standing outside of the vehicle. Try to lock and unlock the vehicle with the remote key, all doors should lock and unlock.
Check that the LED on the inside of the each door is lit for about five minutes after the vehicle is locked using the remote receiver or with the "Keyless drive-system".
Also check that the boot lid locks and unlocks.
Check using all the vehicle's remote keys.
Pre-check:
- That the text REMOTE CONTROL REPLACE BATTERY was not visible on the Driver information module (DIM) display.
- Configuration for locking in Infotainment Control Module (ICM).
If the function fails, when one of the remote keys is used, the fault probably lies with the individual remote key.