BMW 7 Series (F01/F02) 2008-2015 Service Manual / General Vehicle Electronics / Comfort Access
BMW 7 Series: Comfort Access
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Introduction
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
System Overview
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
Functions
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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Battery/Vapor Separator
CARRYING OUT BATTERY "POWER RESET"
IMPORTANT: Observe SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY.
The following steps must be carried out for a "power reset"
Switch off and disconnect battery charger
Turn off ignition
Vehicles with ID transmitter:
Remove identification sensor from slot
V
Removing And Installing/Replacing Electronics Box
IMPORTANT: Read and comply with notes on protection against electrostatic
damage (ESD
protection).
NOTE: Follow instructions for removing and installing CONTROL UNITS !
Necessary preliminary work
Read fault memory.
Disconnect BATTERY EARTH LEAD.
Remove DME CONTROL UNIT.
Release screws (1).
Ti
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