Keyless Entry Transmitter: Description and Operation

Remote control key
In the key head there is an infrared remote control with transmitter window (a), a button for operating (b), a battery compartment (c) with 4 batteries (remote control key up to 09/93) or 2 batteries (remote control key as of 10/93) and a folding 4-track key (d). The key is folded out by a pushbutton (e).
If a remote control key is lost, a new one can be ordered in the usual way by specifying the locking mechanism number.
Up to 8 remote controls can be adjusted to a locking mechanism number by the manufacturer. If the locking mechanism on a vehicle up to 11/93 is replaced the remote control and the control module for infrared remote control also have to be replaced.
If the locking mechanism on a vehicle as of 01/94 is replaced the remote control and the control module for infrared remote control do not have to be replaced.
Only the remote control signal has to be desynchronized and then resynchronized. Service and Repair
The folding key in the remote control can be exchanged.
When the remote control button (b) is operated continuously, the remote control switches off after about 30 seconds, in order to avoid discharging the batteries.
As of 10/93 the size of the remote control key has been reduced by approximately 40%. The mechanical key shank of a remote control key up to 09/93 cannot be replaced by a remote control key as of 10/93.

Spare Infrared remote control key and auxiliary key function
As of approx. 05/95 customers have been given a spare infrared remote control key in addition to the two standard infrared remote control keys (except (USA) (J)). Upon introduction of this spare infrared remote control key the spare batteries have been eliminated for the standard infrared remote control key, which were included in the car document envelope as of introduction of the stage 2 drive authorization system. The spare infrared remote control key can also be obtained for older vehicles with infrared remote central locking from ZVL Germersheim.






The spare key (2) is the size of a credit card. The spare key can be used for the central locking as well as the ATA. Moreover, the drive authorization system can be activated and deactivated with the infrared remote control signal. Actuation of the convenience feature is not possible. The spare key (2) contains an infrared remote control, a pushbutton (b) for actuation, a LED (a) for checking the battery, a battery compartment with two batteries and a mechanical main key (d). The infrared beam exits from the middle of the front side of the spare key when the button (b) is pressed.






The spare keys are marked with an embossed number on the back (here 3).

To replace the two batteries (f), remove the battery compartment cover (c) on the spare key (2). For this purpose press in the catch (arrow). The same batteries are used as in the standard infrared remote control.

NOTE: If necessary the mechanical main key (d) can be replaced with a mechanical auxiliary key. This can be obtained from ZVL Germersheim. The lock cylinders in the trunk and glove box cannot be operated with the mechanical auxiliary key. Customers then still have the familiar advantages when the key is given to a hotel attendant or the vehicle is left in the workshop.