1997 BMW 540i Wiring

Downloaded from www.Manualslib.com manuals search engine
Interior iriml
4 Carefully pry out 4-way hazard flasher switch (A)
Disconnect wiring harness (B).
Remove trim panel fastener (arrow) under 4 way flasher
switch.
4 Remove console trim panel retaining fasteners (arrow) at
rear of trim panel.
Remove front console trim fasteners
(arrows) and carefully
remove trim panel.

Downloaded from www.Manualslib.com manuals search engine
I Interior Trim
Insert allen wrench into slot approximately 1 mm and turn
through
90".
Disconnect wiring harnesses from radio.
Remove radio.
4 Remove left and right locking clips (arrow) from glove com-
partment straps.
4 Carefully pry left and right dashboard trim out to remove
4 Remove right side lower dash support screws (A)

Downloaded from www.Manualslib.com manuals search engine
Interior ~riml
Upper dash assembly, removing and
installing
- Remove lower dash assembly. See Lower dash panel as-
sembly, removing and installing.
I I 4 Remove instrument cluster fasteners (arrows) and swing
cluster out to remove.
Disconnect wiring harnesses from instrument cluster.
4 Remove A-pillar (windshield pillar) trim on left and right sides
by prying out
HPS cover (arrow).
- Remove screws beneath covers.
- Remove passenger side airbag. See 721 Airbag System
(SRS).

Downloaded from www.Manualslib.com manuals search engine
51 3-1 4
llnterior Trim
Carefully pry bottom of upper trim panel away from door post
to release clips.
Pull upper trim panel straight down (arrow) to remove.
Installation is reverse of removal.
If necessary replace defective or
broken mounting clips.
Rear window pillartrim (C-pillar), removing and installing
(models without rear
HPS airbags)
1 I
WARNING-
On 1998 and later models, rear Head Protection System
(HPS)
airbags may be installed (optional equipment) in the
driver and passenger side C-pillar area.
The procedure given
below does not cover models with rear HPS airbags. See
721 Airbag System (SRS).
4 Carefully pry interior light out of C-pillar trim panel and dis-
connect wiring harness.
Carefully pry trim panel out at top to release clips,
- Pull trim panel straight up to remove.
- lnstallation is reverse of removal.
If necessary replace defective or broken mounting clips.

Downloaded from www.Manualslib.com manuals search engine
51 5-2
/Central Locking and Anti-Theft
This section covers repair information for door, trunk and car-
go compartment locks, central locking, electronic
immob~liza-
tion (EWS) and anti-theft alarm (DWA).
€39 cars are equipped with sophisticated self-diagnostic elec-
trical systems. When experiencing malfunctions relating to
central locking. EWS or anti-theft systems, start the diagnosis
process using the
BMW service tester DIS, GT 1, MoDiC or
equivalent scan tool. An advanced diagnostic scan tool can
usually pinpoint electrical faults quickly and safely.
Additional electrical information can be found in:
610 Electrical Component Locations
ELE Electrical Wiring Diagrams
Central locking in E39 vehicles controls the door
locks, trunk
or tailgate lock and fuel filler flap lock. The control module for
the Central Body Electronics system (ZKE
Ill), lknown as the
General Module (GM
Ill), controls central locking.
ZKE
Ill manages the following central locking related func-
tions:
Central locking
* Keyless entry
Key memory
Power trunk release
Electric opening of tailgate
DWA alarm system
Diagnosis
General Module
4 The General Module (GM) (arrow) is responsible for the op-
eration of central body electronics. The GM is located behind
the glove compartment.
Based on input information, the GM uses internal transistors
to switch current flow (providing voltage or ground) through
circuits and actuators. Actuators are the final controlling de-
vices used by GM to operate or control various output func-
tions such as relays and motors.
The accompanying schematic, Central locking inputs and
outputs, illustrates the GM central locking system.

Downloaded from www.Manualslib.com manuals search engine
515-20
Central Locking and Anti-Theft
4 Disconnect actuator rod (arrow) from trunk loclc assembly.
4 Remove trunk latch fasteners (arrows).
- Remove latch and disconnect wiring harness.
- Installation is reverse of removal.
Trunk lock striker plate, removing and
installing
4 Remove left and right trim panel fasteners (arrow).
- Remove (4) trim panel expansion rivets (A) and remove trim
panel.
1 4 Remove striker plate mounting fasteners (arrows).

Downloaded from www.Manualslib.com manuals search engine
Seats
< Remove front seat rail fasteners (arrows)
- Remove front seat from car. Headrest may be removed to
provide additional clearance.
NOTE-
Use a blanket to protect the door sill from scuffing by seat
rails
during seat removal.
- Installation is reverse of removal. Use wire ties or equivalent
means to keep seat harness wiring from fraying.
Tightening torques
Front seat to floor
42 Nm (31 ft-lb)
Seat belt end to seat frame
48 Nm (35 ft-lb)
E39 models are equipped with at least three different ver-
sions of rear seats. This manual only covers the standard
seat used in sedan models.
Rear seat cushion and backrest, removing
and installing (sedan only)
4 Pull front of rear seat cushion up to release clips. While hold-
ing front of cushion up, pull cushion forward to remove.

Downloaded from www.Manualslib.com manuals search engine
Seat ~eltsl
< Remove tensioner cover:
Cut wire ties (A).
Release wiring harness from tensioner cover clip (B).
- Release tensioner cover locks (C) and slide cover down to
remove.
- When reinstalling:
Replace wire ties to relieve tension on pyrotechnic belt
ten-
sioner harness connector.
Tightening torques . -
Front seat to floor (M10) 42 Nm (31 it-lb)
Seat belt to seat 48 Nm (35 It-lb)
Tensioner mounting bracitet
to seat rail 24 Nm (18 it-lb)
Tensioner to mounting bracket 48 Nm (35 it-lb)