1999 BMW 540i trim

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Central Lockina and ~nti- heft
EWS control module, replacing
NOTE-
EWS control module location varies depending on version of
EWS installed.
Checlc the table €39 EWS applications.
- Disconnect battery negative (-) cable.
CA UTIOI\C
Prior to disconnecting the battery, read the battery discon-
nection cautions given in
001 General Warnings and Cau-
tions.
- EWS II: Control module is accessible from behind glove com-
partment.
Remove trim below glove compartment.
Lower relay and module holder to access EWS control
module
EWS
Ill: Control module (A836) is located to left of steering
column, below dash.
Remove trim below steering column.
Unplug module and remove from holder.
Installation is reverse of removal.
Transmitter / receiver module
Only EWS II vehicles are equipped with a separate transmit-
ter! receiver module attached to the steering column trim on
the right side of the column.
Ring antenna
- Remove ring antenna using BMW special tool 61 3 300.
Remove upper and lower steering column trim.
Disconnect harness connector to ring antenna.
Pry off ring antenna using
BMW special tool 61 3 300 or
equivalent flattened prying tool.
Alternatively, remove ignition switch key cylinder: With ignition
ltey in ON position (60" from LOCKED), insert
thin piece of stiff wire into opening (arrow) in lock cylinder
and pull lock cylinder out.
- Detach ring antenna harness connector.
Gently
work ring antenna off ltey cylinder.
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51 5-26
Central Locking and Anti-Theft
Interior sensor UIS (2000 and later models)
The
UIS system uses ultrasonic sound waves instead of elec-
tromagnetic waves. Ultrasonic sound waves are less suscep-
tible to magnetic interference.
Every time the DWA system is armed, the sensor adapts to
whatever objects might be stationary in the interior. The sen-
sor emits ultrasonic waves in a programmed timed cycle. It re-
ceives echoes of the emitted waves. The
UIS amplifies the
received sound wave signals and compares them to the ech-
oes of the transmitted waves. The
UIS also checits the incom-
ing echoes for background hiss (wind noise through a
partially open window) and adapts for this.
If the echoes are consistently similar, no movement is de-
tected.
If the echoes are altered, (inconsistent), the UIS deter-
mines motion in the interior compartment.
If motion is detected, the
UIS changes to a constant cycle
and the echo is compared again.
If the inconsistency is still present the
UIS sends the acti-
vate siren signal to the GM.
Glass breakage sensors
The doorwindows are monitored by inductive sensors mount-
ed on the inside of the door behind the trim panel. A closed
window is recognized by a magnetic plate
on the glass lining
up with the sensor. If the glass is broken, the plate falls away
and the signal from the sensor changes. This causes the GM
to activate the alarm.
Emergency disarming
- An emergency procedure is provided to cancel the DWA in
the event that a fault occurs within the system. The procedure
is as follows:
Driver's door mechanically
unloclted and open within 30
seconds. This will cause triggering of alarm.
All doors closed.
Ignition switch turned to
KL R (ACCESSORY). LED indica-
tor will come on.
- After 10 minutes, alarm is disarmed

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l Seats
Seat repair and component replacement is possible once the
seat has been removed from the vehicle.
Before servicing front seats read safety regulations on han-
dling
airbag modules and pyrotechnic seatbelt tensioners.
See
720 Seat belts and 721 Airbag system (SRS).
WARNING-
. The front seats are equipped with pyrotechnic seat belt
tensioners. These tensioners are powerful devices and
should be handled with exfreme care. Incorrect handling
can trigger off the tensioner and cause injury.
BMW recommends that all repair or replacement
worlc
on pyrotechnic devices must be carried out by a quali-
fied
BMW technician.
Be sure to disconnect the battery and wait
5 seconds
before attempting to work on pyrotechnic devices.
During body straightening and welding with an electric
arc welder, always disconnect the battery and the con-
nection to the pyrotechnic gas generators.
Seat switch and memory module, removing
and installing
- Remove front seat. See Front seats, removing and install-
ing.
- Carefully pull seat adjusting ltnobs straight out to remove.
Remove screw fastener
(A) and trim clips (B), turn side panel
downward to remove.
Disconnect electrical harness connector
(arrow).

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520-5
Seats
1
4 Release mounting tabs (arrows) and remove switch module.
Front seat, removing and installing
- Turn ignition switch to OFF position.
Remove front and rear rail trim panels:
Raise center of trim panel
(A) to release loclting pin.
Unlock and lift out inner mounting clips tabs
(6).
Slide trim panel off rail (arrow) to remove.
< Remove seat belt mounting fastener (arrow) from seat
frame.

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1 Sunroof
Sunroof assembly removal and installation involves headliner
removal, and is not covered in this manual. After sunroof re-
pairs, be sure to follow initialization and adjustment proce-
dures given earlier.
I Sunroof comDonents
1. Left rubber boot suppori
2. Left upper control rail
3. Left side water channel repair ltit
4. Left lower control rail
5. Left cover
6. Left side slider
7. Cross member
8. Sunroof frame
9. Trim panel
10. Gasket
11. Glass roof cover
m5sm.7 - -.
Sunroof panel, removing and installing
(steel or glass)
4 To remove sunroof panel, open sunroof and remove wind
blocker
by removing Tom screw (arrow) on each side.

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Seat Belts
Remove lower B-pillar (door pillar) plastic trim
Pry carefully along bottom of trim to disengage
pillar.
Slide trim down (arrow) and out to remove. clips
from
4 Carefully pry bottom of upper door post trim away from post
to release clips.
Slide upper trim panel down (arrow) to remove.
Remove automatic reel from B-pillar:
- Remove upper seat belt anchor bolt (A).
Remove cross-brace mounting bolts (B).
Remove sound insulation at base of 8-pillar.
Then remove automatic seat belt reel mounting bolt
(C).
Lift out reel.
If it is necessary to remove sliding seat belt height adjuster,
unscrew mounting bolts from B-pillar.

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-- -
Seat Belts
Rear seat belts (sedan)
- Remove rear parcel shelf to access shoulder belt assembly
mounting bolts. See 513 Interior Trim.
- Remove rear seat cushion to access rear seat belt lock
mounting bolts. See 520 Seats.
- When installing seat belt lock straps:
Install right lock strap (which is shorter) underneath middle
lock strap.
Install left lock strap underneath middle lap belt strap.
Metal strap ends must rest against stop on floor under-
neath seat.
Rear seat belt assembly
(Sport Wagon)
1. BoltMlO
(tighten to 31 Nm, 23 ft-lb)
2. Right shoulder belt reel
assembly
3. Center belt lock
4. Right belt lock
5. Left belt lock
6. Center shoulder belt reel
assembly
7. Left shoulder belt reel assembly
8. Bolt
MI2
(tighten to 48 Nm, 35 ft-lb)

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720-1 0
Seat Belts
Rear seat belts (Sport Wagon)
- Center shoulder belt:
Remove shoulder belt guide trim at top of seat backrest.
Feed belt out through slot in trim. Working in cargo com-
partment, partially remove backrest cover to access shoul-
der belt reel.
Remove shoulder belt reel mounting bolt inside backrest.
- Outboard shoulder belt:
Remove roof-pillar (C-pillar) trim.
Remove center shoulder belt.
- Lift up rear seat cushion(s) to access rear seat belt loclc
mounting
bolt(s).
- When installing seat belt loclc straps:
Install right belt loclc strap (which is shorter) underneath
center belt lock strap.
Install left belt loclc strap underneath center lap belt strap.
- Metal strap ends must rest against stop on floor underneath
seat.