Page 797 of 1002

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Body shell
Exterior and aerodynamics
Crash behavlor -frontal impact
-side impact
Body
-rear impact Structural body components -rigidity
-rollover -strength -vibrations -acoustics
Bumpers compartment lid -bendable Seets,.steerlng system .dents -vibrations bars -vibration patterns
Fenders -aerodvnamic
With its traditional styling features, such as the ltidney grille.
circular headlights behind a glass cover (for reasons of
streamlining), and the
"kiclt" in the rear most roof pillar (C-pil-
lar), the E39 can be immediately recognized as a BMW.
The BMW 5 Series chassis is a unibody design constructed of
high strength steel. Attaching parts, such as the front fenders,
rear quarter panels, doors,
trunk lid and hood are also con-
structed of
steel.
Computer aided design (CAD) techniques have been used in
refining the
E39 body to reduce vehicle weight while retaining
strength and increasing torsional rigidity. For good handling
purposes, the more rigid the structure the more precisely the
suspension can operate.
Wind resistance
Windows bonded flush to the body and the guided flow of
cooling air into the engine compartment provide the
carwith a
good coefficient of drag (Cd).
E39 cars have been designed
for balanced aerodynamics but not necessarily an extremely
low Cd. See table below.
Windshield wipers are designed for effectiveness at speeds
up to and beyond 200
ltph (124 mph).
Coefficient of aerodynamic drag (Cd)
6-cylinder sedan 0.30
V-8 sedan 0.31
6-cylinder Sport Wagon 0.31
V-8 Sport Wagon 0.33
Fenders
The exterior panels are corrosion-resistant zinc coated (gal-
vanized) steel. The front fenders are bolted on. For front fend-
er replacement information, see
410 Fenders, Engine
Hood.
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.
I Body-General 1
Rear wiper system
The rear wiper assembly on the E39 Sport Wagon is a self-
contained unit. The control electronics are integrated into the
gear drive that is part of the motor assembly. The control elec-
tronics contain two hall sensors, one
forthe park position and
one
forthe end stop or to signal reverse direction of the wiper
motor.
-
Wiperlwasher
stalk switch
/ 4 - 3
502400100
4 The rear wiper is controlled through the stalk switch on the
steering column. The switch includes the following functions:
Intermittent rear window wiping
Programmed rear window wiping interval
Operation of rear window washer
The wiper system automatically controls the following safety
and convenience features:
* Wiper interrupted when rear glass is opened
Wiper interrupted if wiper arm is blocked
Continuous wiping when vehicle is shifled into reverse
Antenna and sound system
4 There are two diversity FM antenna amplifiers:
FMI amplifier located in the rear window frame
FM2 / FZV amplifier located in the lefl D-pillar
The radio amplifier and CD changer are behind the side
ac-
cess panels in the cargo compartment:
CD changer on lefl side
Sound system subwoofer on right side
The subwoofer has a hold down knob and is mounted on a
hinge. It can be swung out to access
the batteryand fuse pan-
el by unscrewing the knob.
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41 0-3
Fenders, Engine ~oodl
Carefully pry front turn signal assembly from fender and dis-
connect electrical harness (arrow).
< Release headlight trim panel locking clip with a screwdrivel
(arrow).
* Working at corner of side trim panel, pull trim panel out
from side of fender to remove.
- Remove front bumper. See 510 Exterior Trim, Bumpers.
Working at rear of
teners (arrows). fender
well, , remove
fender
'mounting fas-
< Remove lower
housing. 'attaching
bolts
(arrow) at rear of wheel
Page 814 of 1002
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41 0-8
(Fenders, Engine Hood
Hood, aligning
When installing the hood, align the hinges as close to the orig-
inal painted surface as possible. Movement of the hood on its
attaching hardware may require touch-up paint.
The hood should be aligned so that gap
(arrows) to fender is
as even as possible.
4 If height adjustment at rear of hood is off, adjust height using
adjusting screw in lower hinge
(arrow). Loosen and reposi-
tion as necessary.
If height adjustment at
ing adjusting screw: rear
of
hood cannot be completed us-
Q Loosen lower hinge screws (1) and (2).
Add or remove washers as needed to correct height set-
ting.
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411-3
Doors
4 Pull up on locking clip and remove connector.
4 With door fully open, unscrew pin bolts (arrow) from top and
bottom hinges.
Disconnect door
check by squeezing mounting pin tabs
(arrow) and driving pin up.
Remove door by lifting up off lower hinge halves.
CAUJION-
Be careful not to damage door or otherpainted body surfac-
es.
Make sure no load is placed on wirinq harness.
Installation is reverse of removal. Keep in mind the following:
Mount and align rear doors first, followed by the front
doors.
Align door so that panel gaps are equal on either side, see
specifications at the end of this procedure. If necessary,
adjust door hinges. See Door hinge adjustment.
* Adjust door striker so that trailing edge of front door is
slightly higher
(I mm 10.04 in.) than leading edge of rear
door. See
515 Central Locking and Anti-Theft.
Repair any paint damage and paint any exposed metal.
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Doors
~obr adjustment
Front fender to
4.25 mm i 0.25 mm (0.17 i- 0.01 in)
front door gap
Front
door to 4.5 mm i 0.25 mm (0.18 i 0.01 in)
rear door gap
Rear door to rear fender 4.0 mm i 0.25 mm (0.16 i 0.01 in)
Permissible deviation 1 .O mm (0.04 in)
from
~arallel
Tightening torque
Door hinge to door frame
20 Nm (15 it-lb)
Door check, replacing
WARNING -
E39 cars are fitted with side-impact airbags in the front doors
and optional side impact
airbags in the rear doors. When
servicing doors, always disconnect the negative
(-) battery
terminal. See
721 Airbag System (SRS) for cautions and
procedures relating to the
airbag system.
- Close door window completely.
- Disconnect negative (-) battery cable.
CAUTION-
Prior to disconnecting the batter)! read the battery discon-
nection cautions given in
001 General Cautions and
Warnings.
- Remove interior door panel. See Door trim panels, remov-
ing and installing.
- Where applicable, remove side-impact airbag from door. See
721 Airbag System (SRS). Remove door vapor barrier.
Disconnect door
check by
(arrow) and removing pin. squeezing I mounting
pin tabs
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. .- -
l~runk Lid, Tailgate
Trunk lid support strut, removing and
installing
/ Make sure to supporf trunk lid before removing struts. I
Open trunk lid and support in open position.
Remove trunk strut retaining clip
(arrow) and disconnect
struts.
4 Remove spring clip (arrow) from lower end of strut and re-
move strut.
- Installation is reverse of removal. Replace retaining clips
damaged during removal.
Tailgate, emergency release
The tailgate of the E39 Sport Wagon has no ltey cylinder. An
emergency release mechanism is incorporated into the tail-
gate latch. This allows mechanical opening of the latch in
case of an electrical failure. The release is located in the rear
cargo area, along the lower edge of the rear apron behind a
small access cover.
Working inside car, at base of tailgate:
Open tool compartment cover.
Pry out emergency release cable cover.
Pull plastic cable to release rear tailgate latch
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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.