1998 BMW 528i ECT

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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. ~um~ers/
Front bumper, removing and installing
< Working underneath car:
Remove expansion rivets
(arrows) from lefl and right side
trim panels.
Remove bumper trim panels.
4 Remove driving light mounting fasteners (arrows) and dis-
connect wiring connectors.
4 Worlting at front of wheel wells
panel fasteners
(arrows).
remove left and right inner

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51 0-8
I Exterior Trim, Bumpers
- Installation is reverse of removal, noting the following:
Carefully slide bumper side panels over mounting brackets
on fenders.
Make sure gap between body and bumper is set to speci-
fications. Adjust height as necessary. See Front bumper
height, adjusting.
If equipped with headlight washers or
park distance control
reconnect hoses and harness.
Tightening torque Bumper to impact absorber
(M10) 41 Nm (30 ft-lb)
Front bumper impact absorber, replacing
To access front bumper mounting bracket and impact absorb-
er mounting hardware remove front bumper cover. See Front
bumper, removing and installing.
4 Remove front bumper impact absorber mounting nuts (A)
and drill out rivets (B).
NOTE-
Install the bumper bracket bolts using thread locking com-
pound.
- Installation is the reverse of removal.
Tightening torques Bumper to impact absorber
41 Nm (30 fl-lb)
Impact absorber to body (6M) 9 Nm (7 ft-lb)
Impact absorber to body (EM) 22 Nm (16 It-lb)

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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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51 0-1 3
Exterior Trim, Bumpers
Exterior trim is attached to the body with plastic clips and fas-
teners that may be damaged during removal. Be sure to have
necessary fasteners on hand when reinstalling exterior trim
pieces.
BMW emblem, removing and installing
The procedure given below applies to both front and rear
emblems.
- Wrap end of a screwdriver with tape.
CAUTION-
Protect hood paint by covering area around emblem with
tape.
4 Pry up emblem carefully on either side (arrows)
NOTE-
Notice tape on screwdriver tips.
- Installation is reverse of removal
Replace plastic inserts in body if damaged.
If emblem fits loosely, use a small amount of body molding
tape or adhesive on rear of emblem before installing.
Body side molding, replacing
To remove body side moldings, carefully pry moldings
straight off.
4 Installation is reverse of removal. Replace any clips or clip
covering boots damaged during removal.

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1 512 Door Windows
................... General ........................... .51 2.2 Window Service .51 2.5
........... Special tools ........................ .51 2.2 Window anti-trap strip, testing 512-6
..... Power windows ...................... .51 2.2 Front window anti-trap strip, removing 512-6
..... Window switches .................... .51 2.3 Rear window anti-trap strip, removing 51 2-7
................ Rear window child lockout switch ........ .51 2.3 Door window. adjusting 51 2-8
..... Power window motors ................. .51 2.4 Door window. removing and installing 51 2-9
........... Convenience openinglclosing .51 2.4 Window Regulator Service ......... 51 2-1
Window anti-trap protection ............ .51 2-4 Front window regulator removing
Window motor limit stop function ........ .51 2.5 ....................... and installing 51 2-1 1
Rear window regulator. removing
....................... and installing 51 2-1 3

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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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51 2-4
I Door Windows
/ Anti-trap strip
Power window motors
The window motors are mounted on cable regulators. The
window motor control circuit consists of two wires for operat-
ing the motor in both directions.
The motors are activated by relays in the GM
Ill. The relays
provide either power or ground depending on the direction of
window travel. The GM
Ill controls the polarity based on a re-
quest to run the window from a window switch or a conve-
nience
openinglclosing signal.
Convenience openinglclosing
The GM Iii provides the convenience openlclose feature, pro-
viding control of the power windows (and sunroof) from out-
side the vehicle with the key in the driver's door lock. The FZV
(remote key) provides the same function for window opening
only.
Anti-trap protection is active during convenience closing from
the driver's door lock.
If the GM receives a request to operate convenience closing
or opening for more than
110 seconds, the function is deacti-
vated and a
fault code is stored.
Window anti-trap protection
4 A rubber pressure guard is located at the top edge of each
door frame. It consists of two contact strips that close when
subjected to pressure. When the contact strip closes (for ex-
ample, a hand is trapped between the top of the window and
the door frame), an anti-trap signal is sent to the GM
Ill. The
window immediately (within
10 milliseconds) reverses direc-
tion. This feature does not require
initialization.
The E39 pressure sensor finger guard has a resistance of 3
Kw and it is monitored for open circuits. When pressed, the
monitored resistance changes to
< 1 Kw. if anti-trap protection
becomes faulty the one touch window closing will not func-
tion.
Window anti-trap protection is
only active in the one touch
and convenience close modes of operation. If the window
switch is pulled and held, anti-trap protection will not function.
The anti-trap contact strip has a resistance of
1.2 K Ohm and
it is monitored for open circuits. Faults with the anti-trap sys-
tem will cancel the one touch feature requiring the window
switch be held to close the window.