BMW 7 Series: Introduction
Anti-theft System
The anti-theft system is available as an option. The task of the anti-theft system is to indicate unauthorized access to the vehicle by emitting an alarm. The alarm can be triggered both audibly and visually. To do this, however, the anti-theft system must be activated. When activated, the alarm monitors the whole of the vehicle interior.
In addition the anti-theft system monitors the engine compartment and the vehicle's rest position. In order that nothing can be stolen from the trunk, the anti-theft system monitors opening of the trunk lid.
The alarm also signals an attempt to tamper with the vehicle, e.g. cutting of the supply line to the emergency power siren.
The anti-theft system's ultrasonic interior movement detector is entirely integrated in the roof function center.
The ultrasonic signal passes into the inside of vehicle through apertures in the grille of the roof function center.
The emergency power siren and combined tilt sensor is located near the rear wheel arch.
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System Overview
Anti-theft System Circuit Diagram
Fig. 34: Anti-Theft System Circuit Diagram
COMPONENTS DESCRIPTION CHART
Hood switch
Car Access System 4 (CAS4)
Anti-theft system (DWA) LED
Junction Box electron
Functions
Overview
When activated, the anti-theft system on the F01/F02 monitors the entire
vehicle. The doors and hood/trunk lid,
emergency current siren, the vehicle interior and the DWA bus in particular ar
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Functions
Wiping
The wiper/washer system is switched on and off with the wiper switch. The
wiper switch is an integral part of
the steering column switch cluster SZL.
Wiper Switch
The wiper switch on the steering column stalk does not lock in position. It
always returns to its start position
after every ope
Regulator
REPLACING VOLTAGE REGULATOR
Necessary preliminary tasks
Switch off ignition
Disconnect battery negative lead
See NOTES/INFORMATION ON REMOVING AND INSTALLING CONTROL UNITS
Remove alternator
Bosch
Release protective caps (1).
Fig. 52: Identifying Protective Caps
Bosch
Release screw (1) and nut
