BMW 7 Series: Comfort Access
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Keyless Vehicle Access
Using Comfort Access, the customer can unlock and open the vehicle without
active use of the ID transmitter.
Access to the vehicle can be gained from any point. It is importan
Input/Output - Comfort Access
Fig. 1: Comfort Access Input/Output Diagram
COMPONENTS DESCRIPTION CHART
CAS 4 Car Access System 4
Footwell module (FRM)
Junction box electronics (JB)
Emergency sta
Function Overview
Comfort Access is divided into the following functions:
Passive Entry
Passive Go
Passive Exit.
ID transmitters are required for Comfort Access to function.
An ID transmitter co
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Necessary preliminary tasks
Remove WHEELS.
Checking thickness difference:
Measure thickness difference within brake surfaces at 8 point (spread
over the circumference) with a
micrometer gauge
Compare measurement result with setpoint value.
Fig. 6: Measuring Thickness Difference Within Bra
The multifunction steering wheel has additional buttons. The buttons increase
in-car comfort and convenience
by providing for comfort and convenience functions.
The steering column switch cluster reads in the signals from the steering-wheel
buttons. The steering column
switch cluster transmits th