General notes
Two factory-fitted ID transmitters are available for each vehicle. The ID transmitter has a battery. The battery service life is approximately 2 years. The battery compartment is on the rear side of the ID transmitter. When the battery is almost completely discharged, the driver is informed by a Check Control message. If the Check Control message is ignored, the ID transmitter made inoperative (for data backup).
In emergencies, e.g. local interference, the vehicle can be opened using the integrated key in exactly the same way as the remote key.
The CBS data is always written to the ID transmitter when terminal 15 is ON and the vehicle has been driven over 10 kilometers. The data is sent by radio (aerial for Comfort Access). A hidden function is available for updating the CBS data. To do so, switch on terminal 15. Then press and hold down the center lock button. Then press the START-STOP button. When the ID transmitter is in the fixture, the CBS data is updated in cycles.
"P" must be engaged on vehicles with automatic transmission in order to stop the engine.
When entering a car wash: Follow the notes in the Owner's Handbook for vehicles with automatic transmission.