BMW 7 Series: Anti-Theft Alarm System
REMOVING AND INSTALLING/REPLACING EMERGENCY POWER SIREN WITH
TILT SENSOR
Necessary preliminary work
- Remove GUIDE FOR BUMPER AT REAR RIGHT
Secure guide for bumper (3) against falling out.
Unfasten plug connection (1) and disconnect.
Slacken nut (1).

Fig. 93: Identifying Bumper, Plug Connection And Slacken Nut
Unlock catch (1).
Remove emergency power siren (2) from guide for bumper (3).
Catch (1) must not be damaged.
Make sure emergency power siren (2) is correctly seated on guide for bumper (3).

Fig. 94: Identifying Catch And Power Siren
Replacement
Carry out VEHICLE PROGRAMMING/ENCODING.
READ NEXT:
REMOVING AND INSTALLING (REPLACING) LEFT PEDESTRIAN PROTECTION
SENSOR
WARNING: Observe SAFETY INSTRUCTIONS for handling gas generators.
Incorrect handling can activate pedestrian protection and cause
Fig. 101: Overview Of Aerial Diversity
Aerial amplifier
Blocking circuit
AM choke (US vehicles only)
Back - up aerial
Interference suppression filter
OVERVIEW OF SENSORS FOR AIRBAG SYSTEM AND
SEE MORE:
Necessary preliminary tasks
Remove EMPTY HOUSING for roof-mounted aerial
Release screw (1).
Slide roof-mounted aerial (2) in direction of arrow and feed out towards top.
Fig. 55: Identifying Screw And Roof-Mounted Aerial
Disconnect plug connections (1) and remove aerial (2).
Retaining lug (3)
Observe procedure for REPAIR STAGE 3.
Read contents of BODY, GENERAL.
Following new body parts are required:
B-pillar with entrance
Fig. 251: Identifying B-Pillar With Entrance
Fig. 252: Identifying Welded Connections Areas
Mark severance cuts in accordance with specified measurements and cut