Block and release central locking


The Car Access System (CAS) administers two different numbers for each remote control and for each spare key belonging to the vehicle.

The key code number is part of the key identification. As there may only be a maximum of 10 keys per vehicle, key numbers 1 to 10 are stored in CAS. Key code numbers cannot be changed. The key code number is transferred to CAS when the remote control is used. When the key is in the ignition, CAS reads the key number directly from the transponder (memory) in the key. Each key code number occurs only once in CAS. If required, a key can be blocked in CAS by using the key code number.

Personalisation numbers are required to read the Key Memory settings in the vehicle. When unlocking using the remote control, the remote control sends the personalisation number to CAS. CAS forwards the number to the other control units via the data busses. The control units then perform the settings saved in the Key Memory. A total of three different Key Memory settings are coded into each control unit. This means that the personalisation number can have a value from 1 to 3. If required, these can be transferred to another remote control. This is carried out in the personalisation number function.

The vehicle is delivered from the factory with two remote controls. A new remote control has the same key code number as the personalisation number.

This function is used to:

Blocking is recommended when a remote control or spare key has been lost or stolen. The engine cannot be started with a blocked remote control (or spare key). The remote control functions are also blocked. A remote control or spare key can only be blocked if the remote control or spare key is used at least once and is not inserted into the ignition. If a remote control is used instead of a lost or faulty remote control, the old one must still be blocked..

Important:

Test conditions:

Procedure:

  1. Start the function.

  2. Follow the instructions in the program.

  3. The function is complete.