Remote Transmitter, Coding

Remote Transmitter, Coding

Two remote transmitters are supplied with the vehicle. If further transmitters are required, they must be coded to interact properly with the central locking control module.

This procedure must be performed after changing the batteries in keys with remote control function, or if the scan tool displays DTCs of 00955 to 00958

Remote transmitter coding procedure
- Switch ignition on (using separate key).
- Check how many transmitters have already been coded in measuring value block 003 Read Measuring Value Block. Refer to "Measuring Value Blocks (Function 08)/Evaluating Measured Value Blocks" Measuring Value Blocks (Function 08)

Indicated on display


Read Measuring Value Block 3 ->
0 0001 0 0000


Display field 2 indicates how many remote transmitters have been coded and in which memory positions (in the example given, 1 transmitter in position 1).
- Lock vehicle from outside using key to be coded via driver-side door lock.
- Press "unlock" button within 5 seconds often enough to reach next memory position (in example given, twice).
Every press of the button is confirmed by the emergency flashers and the anti-theft system horn.
- Wait 5 seconds.
- Now press "unlock" button one more time (vehicle unlocks).
- Switch ignition off and remove ignition key.
- Check function of new transmitter.
- Check display field 2 in measuring value block 003. It should now display another "1" (in example given: 1100).

NOTE: Be sure that new transmitters are always coded into free memory positions. If occupied positions (distinguishable by a "1") are used, the transmitter previously coded to this position will no longer work.

Existing remote transmitter recoding procedure
This procedure must be performed after changing the batteries in keys with remote control function, or if the scan tool displays DTCs of 00955 to 00958
- Press any button on transmitter.

If vehicle does not respond by locking or unlocking :
- Lock and unlock vehicle within 30 seconds using driver-side lock.
- Now check function of recoded remote transmitter.

Clearing memory positions


NOTE: It is possible to clear all memory positions, e.g. if a customer loses a remote transmitter. Proceed as follows:


- Switch ignition on using key.
- Then mechanically lock central locking from outside vehicle using key.
- Activate remote transmitter "unlock" button on key five times at one second intervals.A short horn signal will sound each time.
- Then, after 6 seconds, press remote transmitter "unlock" button to confirm this clearing procedure one more time.
Central locking should no longer unlock itself via remote transmitter.
- Switch ignition off.

Up to four transmitters can now be coded again