Remote Controls (Keys)
The Remote Control is comprised of a radio frequency transponder (transmitter+receiver), an EWS transponder and an electronic evaluation unit.
The voltage supply of the Remote Control is provided by an integrated rechargeable battery which is charged during vehicle operation via a 125 kHz interface in the ignition switch (ZAS receptacle) as from terminal R.
The rechargeable battery voltage is monitored independently by the Remote Control and signaled to the CAS.
Up to four Remote Controls may be assigned to the vehicle for remote services (not EWS which may have up to 10). There is no procedure necessary for initialization, once the EWS transponder of the Remote Control is identified by the CAS, the radio frequency transponder is also logged in as valid.
The range of the Remote Control can vary to a great extent. This is dependent on the location of the Remote Control in relation to vehicle and other physical conditions.