BMW E90 - Electronic Outer Door Handle Module (TAGE); Functions of Comfort Access

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E90 General Vehicle Electrical
Electronic Outer Door Handle Module (TAGE)
The Electronic Outer Door Handle Module (TAGE) transmits door handle status data via
CAS BUS(K-BUS) to the Comfort Access module, which in turn forwards the data to
CAS2. Information from the door handle that is transmitted is primarily related to
changes at the capacitive sensors and hall sensors integrated into the door handle.
Functions of Comfort Access
The main advantages of Comfort Access (CA) are:
• Passive Entry - Unlocking the vehicle without actively using the ID transmitter
• Passive Go -Starting engine without inserting the ID transmitter into its holder
• Passive Exit - Locking authorization without actively using the ID transmitter
Note: In connection with the comfort access system, the vehicle must activate
the identification transmitter by means of a radio signal so that the trans-
mitter is registered with the vehicle (authentication).
Index Explanation Index Explanation
1
Electronic Outer Door Handle Module (TAGE)
6
Electric Steering Column Lock (ELV)
2
Identification Transmitter/Remote
7
Comfort Access (CA)
3
Rear Window Antenna
4
Remote Control Receiver
CAS-
Bus/K-Bus
K-Bus protocol
5
Car Access System 2 (CAS 2)
K-CAN
Body Bus