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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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721-12 
Airbag System (SRS) 
Head protection airbag (HPS) 
4 Replacement of a head protection airbag (HPS) is  an exten- 
sive operation,  including removal of the following: 
Complete  dashboard 
Complete headliner 
Windshield pillar  (A-pillar) trim 
Door  pillar  (B-pillar) trim 
- Before starting  work on the  HPS airbag, disconnect negative 
(-) cable from battery  and cover negative  terminal with insu- 
lating material. 
Prior to disconnecting the  battery, read the battery  discon- 
nection cautionsgiven  in001 General Warnings  and Cau- 
tions. 
Tightening torque  HPS 
airbag to  body 11 Nm (8 ft-lb) 
HPS airbag mounting bracket 
to A or B-pillar 
HPS gas  generator  to 
dashboard  reinforcement 
(M6 
self-tapping  screw)  2.5 
Nm  (22 in-lb) 
4 Nm (35 in-lb)    
         
        
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2 INDEX 
Battery, starter,  alternator 
alternator (generator) 
121-10 
6-cylinder  engine, removingi 
installing 121-15 
M62 engine 121-16 
M62 TU  engine  (water cooled) 
121-18 
battery 
121-5 charging 121-9 
safety  terminal 121-3 
testing 121-5 charging  system,  troubleshooting 
121-12 
starter 
121-1 9 
6-cylinder  engine, removingi instaliinq 121-20 . V-8 engine, rernovinglinsialiing 
121-21 
solenoid, removinglinstalling 
121-23 troubleshooting 121-19 
see also Maintenance 
Bearing,  wheel 
see  Front  suspension 
see also  Rear suspension 
Belts  see Maintenance,  drive belts 
Blade,  wiper 
see Wipers and  Washers 
Blower motor  see 
A/C 
BMW  emblem 
see Exterior  trim 
BMW special tools  010-18 see also special  tools section  at 
beginning 
of each repair  group 
Body  dimensions 400-2 
interior  features 
400-9 salety and  security 400-7 
Body side  molding 
see  Exterior  trim 
Bonnet  see Engine hood 
Boot see  Trunk 
Brake  fluid 
020-24, 340-8 
Brake fluid pressure sensor 
340-30 
Brakes 
ABS,  ASC or DSC  system 
300-12 
component replacement 340-26 
ASCIDSC switch 
see  Switches 
bleeding 
bralces 340-8 
brake booster 340-1 9 bralce Dads. caiioers and  rotors ,., 340-1 1 
descriotion 300-10 
e~ectrdnic brake & stability 300-11 
light  switch 
see  Switches 
master cylinder 
340-16 pariking brake 340-22 
troubleshooting 340-5 
Bulbs  see Lights 
Bumper 
lront 510-6 height, adjusting 510-12 
rear 510-9 
Bus  system 
600-4 
Camber 
320-33 
Camshaft 
removingiinslaiiing 
M52  engine  116-12 
M52 TU 
/ M54  engine 116-1 9 M62 engine  11 6-39 
wear 
116-6 
Camshaft position  sensors 
see ignition  system 
Camshaft  timing chain 
adjusting  M52  engine 
117-22 
M52 TU I M54 engine 117-43 
M62 engine 117-79 removinglinstalling 
M52 engine 117-26 
M52TU 1 M54 engine 113-46.116- 
28 
M62 engine 117-66 
Capacities, fluid 
020.10 
Car rnemorvlicev memorv .  . 600-10 
see also Centrai 
lociking 
Carbon  canister,  activated 
see Fuel 
tank 
Caster 
320-33 
Catalytic converter  and  oxygen sensor  020-19 
see  also Exhaust  system: exhaust 
manilolds 
Cautions 
001-3 
CD changer 
650-4 
Center  bearing,  driveshaft 
see Driveshait 
Center  brake light 
sedan 
630-13 
Center  console 
513-3 
Centrai  body electronics (ZKE 111) 
600-6 
Central locking 
car memoryiey memory 515.12 general module iunctions 515-2 
remote  entry (FZV) 515-8 
remote  lkey initialization 515-10 single lociddouble ioclk 515-6 
switch 515-4 
Chain 
see  Camshaft  liming chain 
Characteristic  map (electrically  heated)  thermostat 
see Electrically  heated thermostat 
Charging  system 
see  Battery, starter,  alternator 
Cluster  see  instruments 
Clutch  fluid see  Maintenance 
hydraulics 
210-4 
mechanical 210-9 
switch 
see  Switches, pedal ciuster 
variations 
210.10 
Codes, fault OED-1 
Coil 
see Ignition  system 
Coil  spring 
see  Front  suspension 
see also  Rear 
suspe nsion