1997 BMW 540i seats

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Seats
< Remove front seat rail fasteners (arrows)
- Remove front seat from car. Headrest may be removed to
provide additional clearance.
NOTE-
Use a blanket to protect the door sill from scuffing by seat
rails
during seat removal.
- Installation is reverse of removal. Use wire ties or equivalent
means to keep seat harness wiring from fraying.
Tightening torques
Front seat to floor
42 Nm (31 ft-lb)
Seat belt end to seat frame
48 Nm (35 ft-lb)
E39 models are equipped with at least three different ver-
sions of rear seats. This manual only covers the standard
seat used in sedan models.
Rear seat cushion and backrest, removing
and installing (sedan only)
4 Pull front of rear seat cushion up to release clips. While hold-
ing front of cushion up, pull cushion forward to remove.

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Seats
Remove left and right side bacltrest mounting fasteners (ar-
row).
Pull up on backrest to detach from top retainers. Slide back-
rest to side to clear seat belts while removing.
NOTE-
If the car is equipped with heatedrearseats, detach electrical
harness
connector(s) as you remove the seat components.
4 When reinstalling, be sure to pull seat belts and buckles (ar-
rows) up through appropriate slots in seat cushion.
Headrest, removing and installing
- Slide headrest as far up as possible.
Press guides (arrows)
back and
Installation is reverse of removal pull
upward to remove

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- -
Seat Belts
Front seat belt tensioner, removing and
installing
- Disconnect battery negative (-) cable in trunk.
The
front seat belt loclts are equipped with pyrotechnic (ex-
plosive charge) automatic tensioners. These tensioners are
designed to automatically retract and tension the seat belt by
55 mm (approximately 2 inches) in the event of an accident.
CAUTION-
Prior to disconnecting the battery, read the battery discon-
nection cautions given in
001 General Warnings and Cau-
tions.
WARNING-
Pyrotechnic seat belt tensioners are powerful devices and
should be handled with extreme care. Incorrect handling
can trigger the tensioner and cause injury
BMW recommends that all repair or replacement work
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.
Pyrotechnic devices cannot be repaired. Always re-
place them.
Never treat pyrotechnic components with cleaning
agents or grease.
- Do not expose pyrotechnic components to tempera-
tures above
75% (167°F).
Pyrotechnic components can only be tested electrically
when installedusing the
BMWService Tester (DISplus,
GTI, or MoDiC).
Do not fire a pyrotechnic gas generatorprior to dispos-
al. It must be fired by a special disposal company or
shipped
back to BMW in the packaging of the new com-
ponent.
During body straightening and welding with an electric
arc welder, always disconnect the battery and the con-
nection to the pyrotechnic gas generators.
- Remove front seat as described in 520 Seats.
-

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I Seat Belts
a
Front seat belt assembly
1. Seat belt buckle
2. Seat belt stop button
3. Seat belt
4. Seat belt height adjuster
5.
6-pillar cross brace
6. Seat belt reel mounting bolt
7. Seat belt anchor mounting bolt
8. Seat belt lock with pyrotechnic
tensioner
9. Tensioner mounting bolt
Front seat belt reel, removing and installing
(sedan and Sport Wagon models)
- Detach battery negative (-) cable in trunk.
~~-~
Prior to disconnecting the battery, read the battery discon-
nection cautions given in
001 General Warnings and Cau-
l tions. I
- Remove front seat as described in 520 Seats
4 Gently pry up front and rear plastic door sill protector strips
to remove.

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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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Airbag System (SRS)~
MRS control module, replacing
- Disconnect negative (-) cable from battery and cover nega-
tive terminal with insulating material.
CAUTIOI\C
Prior to disconnecting the battery, read the battery discon-
nection cautionsgiven in001 General Warnings and
Cau-
tions.
- Remove center console between front seats. See 513 lnteri-
or Trim.
Remove module mounting nuts (arrows) and lift up control
module. Disconnect electrical harness connector.
Installation is reverse of removal.
Be sure that MRS control module ground cable is attached
to the module mounting stud.
Side-impact crash sensor, removing and
installing
- Make sure ignition key is OFF.
- Remove front seat. See 520 Seats.
Remove plastic door sill trim by lifting to release clips at one
end, then sliding off. Fold up carpet towards rear seat floor. If
necessary, remove floor level heater duct.

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WARNING
Your common sense, good
judgement, and general alertness are
crucial to saie and
successiul sewice
work. Beiore attempting any work on
your BMW be sure to read 001
General Warnings and Cautions
and the copyright page
a1 the iront of
the manual. Review tliese warnings
and cautions each time you prepare
to work on your
BMW. Please also
read any warnings and
cautions that
accompany the procedures in the
manual.
Towing 010-20
Traction control
see Brakes, ABS, ASC or DSC
system
Traction strut
see Rear suspension, suspension
arms
Transmission fluid
200-4
see Maintenance
see also Automatic transmission
see also Manuai transmission
Transmission
fluid heat exchanger
see Cooling system
Transmission input shaft oil seat
see Manual transmission
Transmission lubricant
200-4 see also Automatic transmission
see also Manual
lransmission
Transmission output shafl oil seal
see Manual transmission
Transmission pilot bearing
replacing 210-16
Transmission service see Manual transmission, oil seals
Trim, interior
see interior trim
see also Steering, steering column
trim
Trunk lid
412-2 soft close (SCA) 515-13
see also Trunkltailgale loci(
see also Central iocl TrunWtailgate lock
tailgate loci( emergency release
400-5, 515-21 tailgatelrear window locl(ing 515-14
trunk lock 51 5-1 9
lrey positions 515-7
Turn signai assembly
see Switches
see also Lights
UIS see Interior protection
U-joint
see Driveshaft
Upholstery see Maintenance, leather upholstery
and trim Vacuum
booster
see Brakes
Valve guides
see Cylinder
head and valvetrain
Valve seals
see Cylinder head and valvetrain
Valve seats
see Cylinder head and valvetrain
Valves see Cylinder head and
vaivelrain
Valvetrain see Cylinder head and valvetrain
VANOS control unit,
removinglinstalling
M52 engine 117-14
M52 TU i M54 engine 117-36 double VANOS
function
117-34 timing chain service 113-46. 116-28
timing, adjusting
M52 engine 117-22
M52 TU l M54 engine 117-43
Vehicle identification number (VIN)
010-12
Ventilation microfilter
see
AIC
see also Maintenance
Viscous clutch see Cooling
system, cooling tan
Voitage and polarity
600-5
Voltage tests
see Electrical system, troubleshooting