2000 BMW 540i warning

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Exterior Trim, ~umpersl
4 While supporting mirror, remove top mounting fastener
(arrow).
Lifi mirror up to remove from door, feed mirror electrical
harness through opening to remove.
- Installation is reverse of removal.
NOTE-
Checlt mirror function before installing covering parts.
Tightening torque
Outside mirror to door (M6) 6 Nm (4.5 It-lb)
BUMPERS
- Raise and properly support vehicle.
WARNING-
Male sure that the car is firmly supported on jacltstands de-
signed
forthe purpose. Place the jacltstands understructural
cliassis points. Do not place
jack stands under suspension
oarfs.

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Exterior Trim, Bumpers
4 Remove bumper mounting nuts (arrows)
- Slide bumper straight off bumper side mounting brackets.
NOTE-
If equipped with PDC (Park Distance Control) remove electri-
cal harness grommet and remove harness.
- lnstallation is reverse of removal, noting the following:
Make sure gap between body and bumper is set to speci-
fications. Adjust height as necessary.
To adjust bumper height, loosen bumper mounting nuts (ar-
rows) and adjust height.
Tightening torques
Impact absorber to chassis (ME nut) 20 Nm (15 ft-lb)
Side bracket to body 6 Nm (53 in-it)
Rear bumper impact absorber, replacing
- Raise and properly support vehicle.
WARNING -
Make sure that the car is firmly supported on jack stands de-
signed for the purpose. Place the jack stands beneath
struc-
turalpoints chassis. Do not place jaclc stands under
suspension parts.
- Remove bumper. See Rear bumper, removing and install-
ing.
- Remove bumper cover expanding rivets and remove cover.
. - . . - . . ".-- < Remove b~mper mpact absorber (6) bot (arrow).
I If necessary, replace mounting seals (C).
- Installation is reverse of removal.

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I Exterior Trim, Bumpers
Tightening torques Impact absorber to chassis
(M8 nut) 20 Nm (15 ft-lb)
Impact absorber to chassis
(M6 nut) 9 Nm (80 In-lb
Bumper bracket to impact absorber 45 Nm (32 ft-lb)
(MI0 bolt)
Front bumper height, adjusting
- A 14 mm allen socket is needed to make adjustments
- Raise and properly support vehicle.
WARNING-
Make sure that the car is firmly supported on jackstands de-
signed for the purpose. Place the jack stands beneath a
structural chassis point.
Do not place jack stands under sus-
pension parts.
4 Using a 12-inch extension and a 14 mm Allen socket, turn ad-
justing collar
clocl~wise or counterclocl~wise as needed to
change height of adjusting collar.
4 Distance (A) must be the same at all points (A = 5 i- 1 mm
(0.2 to 0.04 in)).
- Reinstall mounting fasteners and check bumper height
Tightening torques Front bumper to bumper
20 Nm (15 ft-lb)
bracltet (M8 nuts)
Impact absorber
to chassis 9 Nm (80 in-lb
(M6 nuts)
Front bumper bracket to impact
absorber
(MI0 bolts)
41 Nm (31 ft-lb)

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51 2-2
I Door Windows 1
This repair group covers door glass, window regulator and
power window motor repair information.
CA U JIO&
All E39 models are equipped with side-impact airbags in the
front doors. Some models are also equipped with
airbags in
the rear doors. Be sure to read the
airbag warnings and cau-
tions in 721
Airbag System (SRS).
Electric window switch replacement is covered in 612
Switches.
The windshield, rear window, fixed rear doorglass, and cargo
compartment glass (Sport Wagon only) are bonded using
special adhesives and tools. It is recommended that bonded
glass replacement be done by an authorized
BMW service fa-
cility or an automotive glass installer.
Special tools
Some window repair operations require special tools.
Power windows
- Power window features in E39 models include:
Control of the front and rear door window motors is carried
out directly by the General Module (GM
Ill).
One-touch operation in both directions on all four windows.
Cable type window regulator used for all door windows.
. Anti-trap protection provided by pressure sensitive finger
guard.
Right front and each rear door has a single window switch
located in door handle trim.
Rear door window switches can be deactivated by press-
ing child lock-out switch in the driver's window switch block.
Convenience closinglopening of the windows from driver's
loci( cylinder or convenience opening only from remote un-
lociting feature (FZV) remote key.
Window (FZV) operation can be owner customized with
Car Memory function. See 515 Central Locking and Anti-
Theft.
After ignition is switched off, electric windows can be oper-
ated until a door is opened or until
I6 minutes has elapsed.
The GM
IiI bases window motor end position on current
draw (load). There is a maximum window motor run time of
6 seconds. The motor is then switched off even if the end
position load sensor fails.

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Door windows1
Window motor limit stop function
If repeated window activation (upldown cycles) exceeds one
minute, the
GM Ill deactivates the internal relays and disre-
gards any further
upldown requests. The GM Ill provides mo-
tor activation after a short duration but not for the full one
minute monitoring cycle.
The
GM Ill monitors the number of times a window motor is
activated. It counts each cycle and stores the number in
memory. Afler the stop function limit is reached and the win-
dow motor is deactivated, the
GM Ill slowly reverses the
stored count of activation until the stored number equals
0,
thus allowing the window motor to cool down.
WARNING-
* Always wear hand and eye protection when working with
brolen glass.
If a window is brolen, all of the glass bits should be
vacuumed out of the door cavity. Use a blunt
so-ewdi-iv-
er to clean out any remaining glass pieces from the
window guide rails.
When servicing the door windows, the harness con-
nector to the window regulator should always be dis-
connected to prevent pinching fingers in the moving
window mechanism.
Sedan and Sport Wagon doors are similar. Use the following
procedures for window service on these models.
WARNING-
E39 cars are iitted with side-impact airbags in the front
doors. Some are equipped with
airbags in the rear doors
as well. When
servicing the door windows on cars with
side-impact airbags, always disconnect the negative
(-)
battery cable. See 721 Airbag System (SRS) for cau-
tions and procedures relating to the
airbag system.
* Prior to disconnecting the battery, read the battery dis-
connection cautionsgiven
001 General Warnings and
Cautions.

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51 2-8
Door Windows
Door window, adjusting
Whenever the door window or window regulator is removed,
window adjustment should be checked. The glass should
contact the top of the window squarely and should seat
against the window seal uniformly.
NOTE-
If the window does not contact the window seal uniformly,
wind noise or water infiltration may result.
- Remove door panel as described in 411 Doors.
- Disconnect negative (-) cable from battery. Remove airbag
unit and vapor barrier from door. See 721 Airbag System
(SRS).
WARNING-
Prior to disconnecting the batteg read the battery discon-
nection cautions given in
001 General Warnings and
Cautions.
Longitudinal adjustment
- Adjustments are made with window in open position.
Loosen window guide rail mounting nuts (arrows), but do not
remove.
Slide window glass in longitudinal direction to adjust
Tighten guide rail nuts.
Tightening torque
Window regulator guide rail to door
10 Nrn (89 in-ib)

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512-9
Door Windows
Vertical adjustment
- Adjustments are made with window in open position
4 Loosen window clamping fasteners (arrows), but do not
remove.
Adjust rear clamp and tighten fastener.
Tighten front clamp fastener.
4 Raise door window up to stop:
Check gap (A) at window front edge,
Checlc gap (5) at window top edge.
NOJE-
Measure window frame between door window edge and
panel.
Front window gap settings
Front of window
(A) 5.4 mm (0.21 in)
Top of window
(6) 10 mm (0.39 in)
Tightening torque Window regulator guide
rail to door 10 Nm (89 in-lb)
Door window, removing and installing
- Remove door panel as described in 411 Doors
- Reconnect window switch and lower window down to conve-
nient height and disconnect window switch.
- Disconnect negative (-) cable from battery, then remove air-
bag unit and vapor barrier from door. See 721 Airbag Sys-
tem (SRS).
WARNING -
Prior to disconnecting the battery, read the battery discon-
nection cautions given
in 001 General Warnings and
Cautions.

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Door Windows
Tilt window glass carefully inside door cavity and lift out of
door.
Installation is reverse of removal.
Replace plastic window retainers once glass is inside door.
Use new mounting bolts when reinstalling side-impact
air-
bag to door.
Adjust window as described earlier,
Sedan and Sport Wagon doors are similar. There are two win-
dow rails in each front window regulator, only one in the rear.
Otherwise the front and rear regulators are similar.
WARNING-
E39 cars are Wed with side-impact airbags in the front
doors. Some are equipped with
airbags in the rear doors
as well. When servicing the door windows on cars with
side-impact airbags, always disconnect the negative
(-)
battery cable. See 721 Airbag System (SRS) for cau-
tions and procedures relating to the
airbag system.
Prior to disconnecting the battery, read the battery dis-
connection cautions given at the front
001 General
Warnings and Cautions.
NOTE-
Because window operation is electronically controlled, a win-
dow motor does not have mechanical endpositions. For this
reason it can be removed and installed with the window in
any position and does not need reinitialization.
Front window regulator removing and
installing
NOTE-
BMW recommends removing the window regulator and mo-
tor as one unit, then separating the two on the bench.
- Remove front door panel as described in 411 Doors.
- Disconnect negative (-) cable from battery, then remove air-
bag unit and vapor barrier from door. See 721 Airbag Sys-
tem (SRS).