20 pin BMW 525i 2001 E39 Workshop Manual

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Trunk Lid, Tailgate
Starting at top, pull down (arrow) on trim cover. Carefully re-
move wiring harness support clip from trim cover.
Install protective plate
(BMW special tool 51 2 153) between
roof panel and hinges.
WARNING -
The tailgate is very heavy and will close without both pressu-
rized lifting
struts installed. Properly support tailgate prior to
removal of the lifting struts.
Worlting at left side:
Remove gas strut retaining clip and pin (arrow).
4 Insert BMW special tool 51 2 151 over strut.
NOTE-
BMW special tool 51 2 151 must be chamfered in area (A).
Press tool down to release inner end of gas strut.
Push strut forward and toward center of vehicle to remove.
- When installing strut make sure ball cup is pointing straight
down.
- Remainder of installation is reverse of removal.
Tailgate, removing and installing
- Remove radio antenna amplifier. See 650 Radio.
- Disconnect outer end of window and tailgate gas struts. See
Rear window gas strut, removing and installing and Tail-
gate gas strut, removing and installing.
WARNING-
The tailgate is very heaq and will close without both pressu-
rized lifling struts installed. Properly support tailgate prior to
removal of the lifling struts.
- Remove trim panel from tailgate.

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Trunk Lid, ~ail~atel
4 Loosen lower tailgate lock fasteners (arrows) so that tailgate
lock can center itself.
CAUTION-
The lower section of tailgate lock must not scrape against
the upper section.
The eccentric pin on the lower section of the tailgate
loclc rotates
when being locked from upper section of
tailgate lock.
- Disconnect tailgate latch actuator motor by squeeze locking
tabs on electrical harness connector and disconnecting.
CAUTION-
Eccentric pin in lower section of trunk lid lock must be at
lower dead center.
After disconnecting plug connector from actuator mo-
tor, tailgate is opened by electric
unloclcing fixture of up-
per section of tailgate loclc.
. For this reason, the cable connections to the upper
section of the tailgate loclc must remain connected.
Othe~tise the tailgate can only be opened by the emer-
gency handle. Eccentric pin of lower section of tailgate
loclc remains at bottom dead center point after unlock-
ing.
Tailgate alignment, height adjustment
4 Loosen left and right tailgate hinge fasteners (arrows) to al-
low tailgate to be adjusted.
CAUTION-
. When the hinge screws for the tailgate are released, the
position of the overall assembly changes with respect to
the body.
The position of the rear window frame to the tailgate re-
mains unchanged.
- Close tailgate carefully and check gap dimensions. See Tail-
gate alignment specifications below.
- Tighten hinge screws when gap dimensions are correct.

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Trunk Lid, Tailgate
4 Tighten left and right tailgate bracket iasteners (arrows)
4 Tighten upper left and right tailgate fasteners (arrows).
- Open tailgate while taking care not to change hinge posi-
tions.
4 Tighten lower tailgate hinge fasteners (arrows)
- Reconnect eccentric pin actuator motor electrical harness
Plug.
CAUTION-
The eccentric pin in the lowersection of the tailgate loclc turns
in the tailgate when the button is pressed.
- Operate button in tailgate to actuate loclting motor. Eccentric
pin should move to top dead center position.

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Trunk Lid, Tailgate
4 To periorm contact pattern test, coat lower latch areas A, 6
and C with grease.
Carefully close and reopen tailgate.
Check that upper section of tailgate lock does not scrape
against lower latch.
* Eccentric pin in lower section of tailgate loclc must not
scrape against upper section
(B) of tailgate lock.
The contact pattern (C) of upper section of tailgate lock on
eccentric pin should be centered.
- To adjust height of upper section of tailgate lock, loosen fas-
teners, move upper section of lock and retighten fasteners.
Repeat contact pattern test after height adjustment.
Tailgate lateral guide, adjusting
< If necessary, loosen lateral guide to body fasteners (arrows)
to allow it to move.
Move lateral guides to center position.
< Loosen lateral guide to tailgate fasteners to allow it to move.
- Close tailgate to center guides with respect to each other.
NOTE-
The bracket of the lateral guide continues to touch against
the body without clearance as does the lateral guide against
the tailgate.
- Open tailgate and tighten guide fasteners.

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41 2-21
Trunk Lid, ~ailaatel
Rear window, adjusting
NOTE- Three versions of rear window are used on
Sport Wagon
models.
Tailgate must be correctly adjusted before rear window ad-
justments are made.
- . . . . . .. .. 4 With tailgate closeo ano rear window open, oosen ninge fas-
teners (arrows) to allow ninge to move.
- LoosL'n fasteners n lower section of ock to al ow movement.
- Care& ly c ose rear window:
Ad.~st gap dmensions and poston of rear window relative
to Oody panel. See Tailgate alignment specifications. .
FA-UTION- I
On transition area between rooflailgate, tailgate must not ex-
tend above height of roof
othe~lise wind noise will be creat-
ed.
- If necessary, adjust height of rear window frame by inserting
spacers between the hinge and the frame.
- Carefully open rear window, taking care not to alter adjust-
ment.
Tighten left and right rear window fasteners.
Close rear window and check adjustment, repeat step if
necessary. See Tailgate alignment specifications.
Rear window locking pin, adjusting
NOTE-- Several versions of rear window
locldng pin are used on
Sport Wagon models.
1999 528i model is shown. Other
models are similar.
For rear window adjustment specifications,
seeTailgate
alignment specifications.
Loosen lower assembly fasteners (arrows)

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41 2-22
1 Trunk Lid, Tailgate
4 With rear window open, loosen loclc nut (A) so that inclination
of loclting pin
(B) can be adjusted.
- Carefully close rear window, while ensuring that locking pin
is centered in rotary latch in lower section.
NOTE-
When closing rear window, be sure that there is a gap of ap-
proximately
1 mm (0.04 in) between the locliing pin and the
rotary latch in the lower section of lock.
- Open tailgate and tighten lower loclc assembly fasteners. Be
careful not to alter inclination of loclting pin
(B) when tighten-
ing loclc nut
(A).
4 To adjust height of rear window at lock, loosen loclc nut (A)
and turn locking pin (B).
Be careful not alter position of loclting pin when tightening
lock nut
(A).
CA UTIOG
After adjusting rear window, always checlr position of wiper
axis relative to drive disc and limit stop on rear window wiper
motor. Adjust if necessary See 611 Wipers and Washers.

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-
Exterior Trim, Bumpers
This repair group includes repair information for the outside
rearview mirrors, front and rear bumpers, and the easily re-
movable exterior trim parts.
Many of the mirror components are separately available from
an authorized
BMW dealer, including the glass and outside .
plastic housing.
The
E39 models offered two types of outside mirrors, stan-
dard mirrors or automatic dip mirrors.
Outside mirror glass, replacing
CAUTIOI\C
Mirrorshould be at or above room temperature before remov-
al.
Othe~lise, small plastic parfs or glass may break.
Outside mirror glass without automatic dip control,
replacing
Insert thin pry tool (plastic or tape-wrapped screwdriver) be-
tween bottom mirror edge and mirror housing and carefully
pry out mirror glass from housing.
If equipped with heated mirrors: remove heating element
har.
ness connectors from back of mirror glass.
Installation: Connect mirror heating harness if equipped.
Ensure correct alignment of locking pins.
Press mirror glass firmly until it
locks in place.

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-.- -
Exterior Trim, Bumpers
Outside mirror glass with automatic dip control,
replacing
4 Slide locking pin (arrow) right to release glass (A).
- If equipped with heated mirrors: remove heating element har-
ness connectors from
back of mirror glass.
4 Install mirror glass by placing glass on lugs (arrows) and turn
loclting pin until glass is locked in place.
Outside mirror housing, removing and
installing
- Remove mirror glass as described above.
4 Compress plastic retainers (arrows)
NOTE-
The front mirror housing is retained by either three or four
clips, depending on model.

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51 0-4
I Exterior Trim. Bumpers
4 Carefully remove mirror housing from frame
- Installation is reverse of removal.
NOTE-
Check mirror function before installing covering parts
Outside mirror assembly, removing and
installing
- Remove front door panel trim. See 41 1 Doors
4 Carefully lift inner trim panel up to remove from retaining clip
(arrow).
Disconnect electrical harness connectors for window anti-
trapping protection (B) and speaker (A), if equipped.

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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.