Brake
rotor,
removing
and
installing
.
.
.
.
.
.
.
.
340-7
MASTER
CYLINDER
............
.
.
.
.
.
.
.340-7
Master
cylinder,
removing
and
installing
.
...
.
340-7
GENERAL
TROUBLESHOOTING
WARNING
-
"
Although
semi-metallic
and
metallic
Brake
friction
materials
in
Brake
pads
or
shoes
no
longer
con-
tain
asbestos,
they
produce
dangerous
dust
.
"
Brake
fluid
is
poisonous,
highly
corrosive
and
dangerous
to
the
environment
Wear
safety
glasses
and
rubber
gloves
when
working
with
Brake
fluid
.
Do
not
siphonBrake
fluid
with
your
mouth
.
Immediately
clean
away
any
fluid
spilled
on
painted
surfaces
and
wash
with
water,
asBrake
fluid
will
remove
paint
.
"
Always
use
new
Brake
fluid
froma
fresh,
un-
opened
container
.
Brake
fluid
will
absorb
mois-
ture
from
the
air
.
This
canlead
to
corrosion
problems
in
the
brakingsystem,
and
will
also
low-
er
the
Brake
fluid's
boiling
point
.
Dispose
of
Brake
fluid
properly
.
"
Do
notreuse
self-locking
nuts,bolts
or
fasteners
.
They
are
designed
to
be
used
only
once
and
may
failif
reused
.
Always
replace
them
with
new
self-
locking
fasteners
.
BMW
E36
models
areequipped
with
vacuum
power-assist-
ed
four-wheel
disc
brakes
with
an
integral
Antilock
Brake
Sys-
tem
(ABS)
.
Single-pistoncalipers
act
on
solid
or
vented
front
rotors
and
solid
rear
rotors
.
A
brake
pad
wear
sensor
for
each
axle
indicates
when
brake
padsneed
replacement
.
The
dual
drum-type
parking
brakesystem
is
integrated
with
the
rear
brake
rotors
.
NOTE-
M3
models
havevented
directional
Brake
rotors
on
the
rearaxle
as
well
ason
the
front
.
340
Brakes
BRAKES
340-1
GENERAL
.
.
.
.
.
.
.........
.
.
.
..........
340-1
BRAKE
BOOSTER
.........
.
.
.
.
.
...
.
.
.
.
340-8
TROUBLESHOOTING
.......
.
......
.
...
340-1
Brake
booster,
removing
and
installing
....
.
.
340-8
PARKING
BRAKE
.
.....
.
...
.
.
.
.....
.
.
.
340-10
BLEEDING
BRAKES
.
.
.
.
.
.
.
.
..........
340-3
Parking
brake,adjusting
.
.
.
.
.
.
.
.
.
.
.....
.
340-10
Pressure
bleeding
brakes
Parking
brake
shoes,
removing
and
installing
.
340-11(except
cars
with
AST)
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.340-3
Parking
Brake
cable,
replacing
.
.
.
.
.
.
.
.
.
.
.
.
340-11
BRAKE
PADS,
CALIPERS,
ANTILOCK
BRAKE
SYSTEM
(ABS)
.
.
.
.340-11
AND
ROTORS
..........
.
.......
.
.
.
.
.
.
.
340-3
ABS
System
Inspection
.
...
.
.......
.
.
.
..
340-12
Brake
pads,
replacing
............
.
.
.
.
.
.
.
340-4
ABS
wheel
speed
sensors,
replacing
.
.
.
.
..
340-12
Brake
caliper,
removing
and
installing
.
..
..
.
340-6
TABLES
a
.
Brake
System
Troubleshooting
.....
...
.
.
.....
.340-2
b
.
Brake
Rotor
Reconditioning
Specifications
.
.....
.340-7
Brakeperformance
is
mainly
affected
by
three
things
:
the
leve¡
and
condition
of
the
brake
fluid,
the
system's
abilíty
to
create
and
maintain
hydraulic
pressure,
and
the
condition
of
the
friction
components
.
Air
in
the
Brake
fluid
will
make
the
Brake
pedal
feel
spongy
during
braking
or
will
increase
the
Brake
pedalforce
required
to
stop
.
Fluid
contaminated
by
moisture
or
dirt
can
corrode
the
system
.
Inspect
the
Brake
fluid
inside
the
reservoir
.
Ifit
is
dirty
or
murky,
or
is
over
a
year
old,
the
fluid
should
be
replaced
.
Visually
check
the
hydraulic
system
startingat
the
master
cylinder
.
To
check
the
function
of
the
master
cylinder
hold
the
brake
pedal
down
hard
with
the
engine
running
.
The
pedal
should
feelsolid
and
stay
solid
.
If
the
pedal
slowly
falls
to
the
floor,
either
the
master
cylinder
is
leaking
internally,
or
fluid
is
leaking
externally
.
If
no
leaks
canbe
found,
the
master
cylin-
der
is
faulty
and
should
be
replaced
.
Check
all
Brake
fluid
lines
and
couplings
for
leaks,
kinks,
chafing
and
corrosion
.
Check
the
Brake
booster
by
pumping
the
Brake
pedal
ap-
proximately
10
times
with
the
engine
off
.
Hold
the
pedal
down
and
start
the
engine
.
The
pedal
should
fa¡¡
slightly
.
If
not,
check
for
any
visiblefaults
before
suspecting
a
faulty
brake
booster
.
Check
for
strong
vacuum
at
the
vacuum
hose
fitting
at
the
booster,
and
check
the
non-retum
valve
for
one-way
flow
.
Worn
or
contaminated
brake
pads
will
cause
poor
braking
performance
.
Oil-contaminated
or
glazed
pads
will
cause
stopping
distances
to
increase
.
Inspect
the
rotors
for
glazing,
discoloration
and
scoring
.
Steering
wheel
vibration
while
braking
at
speed
is
often
caused
by
warped
rotors,
but
can
also
be
caused
byworn
suspension
components
.
TROUBLESHOOTING
340-2
BRAKES
When
troubleshooting,
keep
in
mind
that
tire
inflation,
wear
and
temperature
can
affect
braking
and
suspension
.
See310
Front
Suspension
for
more
information
on
front
suspension
parts
inspection
.
Table
a
lists
symptoms
of
brake
problems,
their
probable
causes,
and
suggested
corrective
actions
.
Table
a
.
Brake
System
Troubleshooting
Symptom
1
Probable
cause
1
Repairs
Brake
squeal
a
.
Incorrectly
installed
brake
pads
or
a
.
Check
component
installation
.
parking
brake
shoes
b
.
Brakepad
carriers
dirty
or
corroded
b
.
Remove
brake
pads
and
clean
calipers
.
c
.
Brake
pad
anti-rattle
springs
faulty
or
c
.
Install/replace
anti-rattle
springs
.
missing
d
.
Brakepads
heat-glazed
or
oil-soaked
d
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
calipers
as
required
.
e
.
Wheel
bearings
worn
(noise
most
e
.
Replace
worn
bearings
.
See310
Front
Suspension
pronounced
when
turning)
or
330
Rear
Suspension
.
Pedal
goes
to
f
loor
when
braking
a
.
Brake
fluid
leve¡
low
due
to
system
a
.
Check
fluidlevel
and
inspect
hydraulic
system
for
leaks
signs
of
leakage
.
Fill
and
bleed
system
.
b
.
Master
cylinder
faulty
I
b
.
Replacemaster
cylinder
.
Low
pedal
after
system
bleeding
1
a
.
Master
cylinder
faulty
1
a
.
Replace
master
cylinder
.
Pedal
spongy
or
brakes
work
only
a
.
Air
in
brake
fluid
a
.
Bleedsystem
.
when
pedal
is
pumped
b
.
Master
cylinder
faulty
(interna¡
return
b
.
Replacemaster
cylinder
.
spring
weak)
c
.
Leaking
line
or
hose
unions
c
.
Repair
or
replace
lines
and
hoses
.
Bleed
system
.
Excessive
braking
effort
a
.
Brake
pads
wet
a
.
Use
light
pedal
pressure
to
dry
pads
while
driving
.
b
.
Brake
pads
heat-glazed
oroil-soaked
b
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
calipers
.
c
.
Vacuum
booster
or
vacuum
hose
con-
c
.
Inspect
vacuum
lines
.
Test
vacuum
booster
and
re
nections
to
booster
faulty
place
as
required
.
Test
vacuum
non-return
valve
for
one-way
air
flow
.
Brakes
pulsate,
chatter
or
grab
a
.
Warped
brake
rotors
a
.
Resurface
or
replace
rotors
.
b
.
Brake
padsworn
b
.
Replace
brake
pads
.
c
.
Brake
pads
heat-glazed
or
oil-soaked
c
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
calipers
.
Uneven
braking,
car
pulís
to
one
a
.
Incorrect
tire
pressures
or
worn
tires
a
.
Inspect
tire
condition
.
Check
and
correct
tire
pres-
side,
rear
brakes
lock
sures
.
b
.
Brake
pads
on
one
side
of
car
heat-
b
.
Replace
brake
pads
.
Clean
rotors
.
Replace
leaking
glazed
or
oil-soaked
calipers
.
c
.
Caliper
or
brake
pads
binding
c
.
Clean
and
recondition
brakes
.
d
.
Worn
suspension
components
d
.
Inspect
for
worn
or
damaged
suspension
compo-
nents
.
See
310
Front
Suspension
or
330
Rear
Sus-
pension
.
Brakes
drag,
bind
or
overheat
a
.
Brake
caliper
or
brake
pads
binding
a
.
Clean
or
replace
caliper
.(
b
.
Master
cylinder
faulty
b
.
Replacemaster
cylinder
.
WARNING
-
On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
required
to
properly
bleed
the
ABS/AST
system
.
For
safety
reasons,
the
brake
system
on
carswith
ABS/AST
must
not
be
bled
using
the
procedures
described
inthis
repair
group
.
BLEEDING
BRAKES
Brake
bleeding
is
usually
done
for
one
of
two
reasons
:
Ei-
ther
to
replace
oíd
brake
fluid
as
part
of
routine
maintenance
or
to
expel
trapped
air
in
the
system
that
resulted
from
open-
ingthe
brake
hydraulic
system
during
repairs
.
BLEEDING
BRAKES
Alwaysuse
new
brake
fluid
from
an
unopened
container
.It
is
important
to
bleed
the
entire
system
when
any
part
of
the
hydraulic
system
has
been
opened
.
On
cars
not
equipped
with
traction
control
(AST),
brake
system
bleeding
should
be
done
with
a
pressure
bleeder
.
On
cars
with
AST,
brake
bleed-
ing
should
be
done
by
an
authorized
BMW
dealer
.
WARNING
-
On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
requíred
to
properly
bleed
the
ABS/AST
system
.
For
safetyreasons,
the
brake
system
on
carswith
ABS/AST
must
not
be
bled
using
the
procedures
described
inthís
repair
group
.
6
.
Remove
brake
pads
from
caliper
.
Where
applicable,
carefully
pry
pad
wear
sensor
from
pad
.
See
Fig
.
5
.
Fig
.
5
.
Removing
brake
pad
wear
sensor
.
7
.
Inspect
brake
caliper
for
signs
of
leakage
.
Check
that
the
caliper
piston
slides
smoothly
into
caliper
.
Replace
caliper
if
any
faults
are
found
.
CAUTION-
With
the
pads
removed,
residual
hydreulic
pres-
sure
may
cause
the
caliper
piston
to
slide
out
.
Use
a
wooden
block
to
hold
the
piston
in
place
.
8
.
fnsert
brake
pad
wear
sensor
into
cutout
in
new
pad
where
applicable
.
14
.
Place
inner
brake
pad
(with
locating
spring)
ontobrake
NOTE-
caliper
piston
.
Route
pad
wear
sensor
wiring
through
lf
the
brake
lining
indicator
light
illuminated
prior
to
caliper
opening
and
bleeder
dust
cap
.
brake
pad
replacement,
the
wear
sensor
should
be
re-
placed
.
15
.
The
remainder
of
installation
is
reverse
of
removal
.
"
Do
not
lubricate
guide
boits
.
9
.
Slowly
press
piston
back
into
caliper
.
Use
cace
not
to
"
Once
brake
assembly
is
installed
depress
brakepedal
damage
piston
dust
sea¡
.
See
Fig
.
6
.
severa¡
times
before
driving
vehicle
.
NOTE-
"
Open
caliper
bleeder
screw
when
pressing
piston
Tightening
Torques
back
into
caliper
.
Catch
expelled
fluidin
appropriate
"
Brake
caliper
to
brake
pad
container
.
This
procedure
is
highly
recommended
in
carrier
(guide
bolt)
..........
...
.
.
30
Nm
(22
ft-Ib)
the
case
of
cars
with
ABS
.
"
Road
wheel
to
hub
.....
.
..
100±10
Nm
(74±7
ft-Ib)
"
Open
the
bleeder
screw
only
when
applying
force
to
the
piston
.
Do
not
allow
airto
be
drawn
in
through
the
bleeder
screw
.
"
Pressing
the
caliper
piston
in
may
cause
the
brake
flu-
id
reservoir
to
overflow
.
To
prevent
this,
use
a
clean
syringe
to
first
remove
some
fluid
from
the
reservoir
.
BRAKES
340-
5
0012157
Fig
.
6
.
Brake
caliper
piston
being
pressed
into
caliper
to
make
room
for
new
pads
.
Usea
rag
toprotect
caliper
piston
and
seals
.
10
.
Thoroughly
clean
inner
and
outer
surfaces
of
brake
ro-
tor
.
Inspect
rotor
for
cracks,
signs
of
overheating
and
0012156
scoring
.
11
.
Measure
thickness
of
rotor
.
See
Table
b
.
If
rotor
does
not
pass
minimum
thickness
requirements,
or
is
dam-
aged,
replace
as
described
later
.
12
.
Thoroughly
clean
all
contact
points
on
caliper
and
brake
pad
carrier
.
Clean
guide
bolts
and
make
surethey
slide
freely
13
.
Lightly
coat
pad
contact
points
with
brake
anti-squeal
paste
.
Place
outer
brake
pad
onto
caliper
.
Applya
small
amount
of
grease
to
thetop
and
bottom
contact
points
where
the
caliper
contacts
the
pad
carrier
.
BRAKE
PADS,CALIPERS,
ANDROTORS
340-
8
BRAKES
Fig
.
10
.
Brake
fluid
linesat
master
cylinder
(arrows)
.
6
.
If
fluid
reservoir
was
removed,
install
it
carefully
using
new
sealing
grommets
.
7
.
Mount
master
cylinder
to
brake
booster
using
a
new
0-
ring
and
new
self-locking
nuts
.
CAUTION-
Use
cave
not
to
over-torque
the
master
cylinder
mounting
nuts
.
This
could
damage
the
brake
booster
and
prevent
proper
vacuum
build-up
.
0012164
8
.
Connect
all
brake
fluid
lines
.
Connect
hydraulic
clutch
hose
to
brake
fluid
reservoir
.
9
.
Reconnect
fluid
leve¡
sender,
and
bleed
entire
brake
systemas
described
earlier
.
BRAKE
BOOSTER
BRAKE
BOOSTER
The
brake
booster
is
mounted
to
the
bulkhead
on
the
driver
sideofthe
engine
compartment,
directly
behind
the
brake
master
cylinder
.
See
Fig
.
11
.
0015225
Fig
.
11
.
Brake
booster
(arrow)
.
A
is
vacuum
hose
from
intake
mani-
fold
.
B
is
one-way
valve
.
Intake
manifold
vacuum
acts
ona
large
diaphragm
in
the
brake
booster
to
reducebrake
pedal
effort
.
Brake
booster,
removing
and
installing
1
.
Disconnect
negative
(-)
cable
from
battery
.
CAUTION-
Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
onpage
vi¡¡
.
Tightening
Torque
"
Brake
master
cylinder
to
2
.
Using
a
clean
syringe,
empty
brake
(luid
reservoir
.
brake
booster
.....
..
.
..
.........
26
Nm
(18
ft-Ib)
WARNING-
"
Brake
fluid
hose
to
caliper
....
17-19
Nm
(13-14
ft-Ib)
Brake
fluid
is
highly
corroslve
and
dangerous
to
the
environment
.
Dispose
of
it
properly
.
3
.
Remove
brake
fluid
level
sender
connector
from
reser-
voir
cap
.
4
.
Disconnectbrake
fluid
lines
from
master
cylinder
.
Plug
openings
.
5
.
Disconnect
engine
vacuum
hose
from
brake
booster
.
6
.
Disconnect
ABS
electrical
connectors
.
Label
and
then
disconnect
brake
lines
from
hydraulic
brake
unit
.
Plug
openíngs
.
See
Fig
.
12
.
~
~
A
1/
B
'1v
C
~
F
lu
11
-ri
J
.
0013244
A
.
Right
front
F
Front
from
master
cylinder
B
.
Leftfront
R
.
Rear
from
master
cylinder
C
.
Rear
Fig
.
12
.
Brake
fluid
linesat
ABS
hydraulic
unit
.
WARNING
-
"
On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
required
to
properly
bleed
the
Antilock
Brake
System
(ABS)
.
Removal
of
the
ABS
hydraulic
unit
is
not
recommended
un-
less
this
equipment
is
available
.
For
safetyrea-
sons,
the
brake
system
on
cars
with
ABS
must
not
be
bled
using
the
procedures
described
inthis
repair
group
.
"
Do
not
mix
up
the
fluid
fines
at
the
ABS
hydraulic
unit
Label
all
connections
before
disconnecting
.
7
.
Remove
ABS
hydraulic
unit
from
engine
compartment
.
8
.
Working
inside
car,
remove
panel(s)
frombeneath
steering
column
to
access
pedal
assembly
.
See513
In-
terior
Trim
.
12
.
Make
sure
al¡
nuts,
fluid
couplings,
thread
bores
and
mating
surfaces
are
clean
.
BRAKES
340-
9
0011261
Fig
.
13
.
Brake
pedal
clevispin
and
retaining
clip
(A)
.
Brake
booster
mounting
nuts
shown
at
arrows
.
13
.
If
necessary,
mount
master
cylinder
to
vacuum
booster
using
a
new
O-ríng
and
newself-locking
nuts
.
CAUTION-
Do
not
over-torque
the
master
cylinder
mounting
bolts
.
This
could
damage
the
brake
booster
and
prevent
proper
vacuum
build-up
.
14
.
Installation
is
reverse
of
Rmoval
.
"
Bleed
brakes
as
described
earlier
.
"
Check
and,
if
necessary,
adjust
brake
light
switch
above
brake
pedal
.
Tightening
Torques
"
Brakemaster
cylinder
to
brake
booster
...........
.
..
..
...
26
Nm
(18
ft-Ib)
"
Brake
booster
to
bulkhead
.
.
..
..
...
22
Nm
(16
ft-Ib)
"
Brake
fluidline
to
master
cylinder
or
ABS
hydraulic
unit
.......
.
..
17-19
Nm
(13-14
ft-lb)
9
.
Remove
clip
and
clevis
pin
from
brake
booster
pushrod
and
disconnect
it
from
brakepedal
.
Remove
brake
booster
mounting
nuts
.
See
Fig
.
13
.
NOTE-
10
.
Working
in
engine
compartment,
remove
brake
booster
When
replacing
the
brake
booster
one-way
valve
or
together
with
master
cylinder
.
vacuum
hose,
install
the
valve
so
that
the
molded
arrow
is
pointing
toward
the
intake
manifold
.
Use
new
hose
11
.
If
booster
or
master
cylinder
O-ring
is
being
replaced,
clamps
.
disconnect
master
cylinder
from
brake
booster
.
BRAKE
BOOSTER
7
.
Turn
on
ignition
.
Check
that
light
comes
on
as
soonas
4
.
Remove
parkíng
brake
shoes
as
described
above
.
lever
is
pulled
up
.
5
.
Disconnect
cable
from
parking
brake
actuator
and
then
8
.
Install
parking
brake
lever
boot
.
Install
road
wheel
lug
remove
parking
brakecable
from
cable
holder
on
trail-
bolts
.
ing
arm
.
See
Fig
.
17
.
Tightening
Torque
"
Road
wheel
to
hub
.
..
......
100±10
Nm
(74±7
ft-Ib)
Parking
brake
shoes,
removing
and
installing
1.
Raise
rear
of
car
andremove
road
wheels
.
WARNING
-
Make
sure
the
car
is
firmly
supportedon
jack
stands
designed
for
the
purpose
.
Place
the
jack
stands
be-
neath
a
structural
chassis
point
.
Do
not
place
jack
stands
undersuspension
parts
.
2
.
Without
disconnecting
brake
fluid
hose,
remove
rear
brake
calipers
from
trailing
arms
.
Remove
rear
brake
rotors
.
See
Brake
Pads,
Calipers
and
Rotors
.
CA
UTION-
Do
not
let
the
brake
caliper
assembly
hang
from
the
brake
hose
.
Support
caliper
from
chassis
with
strong
wire
.
3
.
Unhook
upper
return
spring
from
brake
shoes
.
Remove
shoe
retainers
bypushing
them
in
and
rotating
1
/4turn
.
BMW
special
tool
no
.
344
000
can
beused
to
remove
retainers,
if
needed
.
4
.
Spread
shoes
apart
and
lift
them
out
.
7
.
Installation
is
reverse
of
removal
.
Adjust
parking
brake
as
described
earlier
.
NOTE-
When
removing
the
brake
shoes
the
shoe
expander
pivot
pin
in
the
brake
actuator
may
fall
out
.
Two
versions
of
the
Antilock
Brake
System
(ABS)
are
in-
5
.
Inspect
shoe
expander
to
make
sure
it
functions
prop-
stalled
onthe
cars
coveredby
this
manual
.
Early
cars
use
the
erly
.
Apply
a
thin
coat
of
grease
tosliding
parts
and
Teves
Mark
IV
G
ABS
.
Later
cars
use
the
Teves
Mark
20-I
pins
.
ABS
.
The
main
difference
between
the
two
systems
is
that
the
Mark
20-I
system
integrates
the
ABS
control
module
into
the
6
.
Installation
is
reverse
of
removal
.
Be
sure
to
adjust
hydraulic
unit
as
a
single
component
.
parking
brake
cables
as
described
earlier
.
ABS
is
designed
to
be
maintenance
free
.
There
are
noad
Parking
brake
cable,
replacing
justments
that
canbe
made
to
the
system
.
Repair
and
trouble-
shooting
of
the
major
ABS
components
requires
special
test
1
.
Raise
rear
of
car
and
remove
road
wheels
.
equipment
and
knowiedge
and
should
be
done
by
an
autho-
rized
BMW
dealer
.
2
.
Remove
rear
brake
caliper
and
rotor
.
See
Brake
Pads,
Calipers
and
Rotors
.
3
.
Working
inside
car,
lift
parking
brake
lever
boot
out
of
console
.
Remove
cable
adjusting
nut
.
Refer
to
Fig
.
15
.
Fig
.
17
.
Parking
brake
cable
insertion
point
in
rear
trailing
arm
(arrow)
.
6
.
Slide
cable
out
of
housing
.
NOTE
-
BRAKES
340-
1
1
On
some
models
it
may
be
necessary
to
remove
rear
muffler
to
access
the
brake
cabes)
.
ANTILOCK
BRAKE
SYSTEM
(ABS)
0013209
ANTILOCK
BRAKE
SYSTEM
(ABS)
340-
1
2
BRAKES
ABS
is
self-tested
by
the
ABS
diagnostic
unit
each
time
the
car
is
started
.
Once
the
test
is
complete,
the
ABS
dashboard
light
tucos
off
.
If
the
light
remains
lit
or
comes
on
at
any
time
during
driving,
a
system
fault
has
occurred
and
ABS
is
elec-
tronically
disabled
.
The
conventional
braking
systemremains
fully
functioning
.
ABS
Inspection
A
visual
inspection
of
the
ABS
may
help
to
locate
system
faults
.
If
no
visual
faults
can
befound
and
the
ABS
light
re-
mains
on,
have
the
system
diagnosedbyan
authorized
BMW
dealer
.
Carefully
inspect
the
entire
ABS
wiring
harness,
particularly
the
pulse
sensorharnesses
and
connectors
near
each
wheel
.
Look
for
chafing
or
damage
due
to
incorrectly
routed
wires
.
Carefully
remove
the
wheelspeed
sensors
.
Clean
the
sen-
Fig
.
18
.
Front
ABS
pulse
sensor
mounting
bolt
(arrow)
.
sor
tips
.
Inspect
the
toothed
wheel
on
thewheel
hub
.
Check
for
missing,
clogged
or
corroded
teeth,
or
other
damage
that
could
alter
the
clearance
between
the
sensor
tip
and
the
toothed
wheel
.
NOTE-
If
a
toothed
ring
is
damaged,
the
entire
wheel
hub
mustbe
reptaced
.
See
310
Front
Suspension
or330
Rear
Suspension
.
ABS
wheel
speed
sensors,
replacing
1
.
Raise
applicable
end
of
car
.
WARNING
-
Make
sure
thecar
is
firmly
supportedon
jack
stands
designed
for
the
purpose
.
Place
the
jack
stands
be-
neath
a
structural
chassis
point
Do
not
place
jack
stands
under
suspension
parts
.
2
.
Unscrew
wheelspeed
sensor
mounting
bolt
.
Remove
sensor
from
its
housing
.
See
Fig
.
18
.
Remove
harnessfrom
retaining
mounts
.
3
.
Front
ABS
sensor
:
Working
in
front
wheel
housing,
dis-
connect
and
remove
sensor
.
See
Fig
.
19
.
4
.
Rear
ABS
sensor
:
Working
in
rear
wheel
housing,
dis-
connect
andremove
sensor
.
5
.
During
installation,
apply
thin
coat
of
Molykote
0
Long-
term
2
or
an
equivalent
grease
to
pulse
sensor
and
housing
.
ANTILOCK
BRAKE
SYSTEM
(ABS)
0012122
Fig
.
19
.
Front
ABS
wheel
speed
electrical
connector
(arrow)
in
wheel
well
.
6
.
Installation
is
reverse
of
removal
.
400-
4
BODY-GENERAL
INTERIOR
EQUIPMENT
E36
interiors
have
a
unique
character,
with
a
combínation
of
sporty
features
and
innovative
design
.
Al¡
body
versions
were
made
in
a
wide
choice
of
interior
and
exterior
colors
.
New
colors
with
matching
leather
and/or
fabric
upholstery
were
in-
troduced
for
each
model
year,
including
light-alloy
wheels
in
new
designs
.
Driving
comfort
is
enhanced
by
power
steering,
tilt
steering
wheel
(optional),
height-adjustable
front
seats,
and
electrical-
ly
adjustable
and
heated
rear-view
mirrors
.
Inside
thecar
there
are
reading
lights
at
four
seating
positions
.
Seats
and
Seat
Belts
NOTE-
Theseat
base
usedon
cars
with
pyrotechnic
seatbelt
Anatom¡cal
ly-correct
seats
are
constructed
from
polyure-
tensioners
is
not
interchangeable
with
the
earlier
seat
thane
foam
containing
areas
or
"zones"
of
different
firmness
.
base
.
The
seat
bases
have
steel
springs
for
added
support
and
strength
.
The
power
seats
are
provided
with
conveniently
lo-
Instruments
and
Controls
cated
switches
along
the
outside
edge
of
the
seat
.
Heated
seats
are
an
option
in
all
models
.
See
520
Seats
for
more
de-
Everything
in
the
interior
passenger
compartment
essential
tails
.
to
the
driver
is
logically
grouped
and
easy
to
reach
.
Al¡
instru-
ments
and
controls
havebeen
arranged
ergonomically
and
The
M3
sport
seat
is
shown
in
Fig
.
3
.
are
fully
integrated
into
the
overall
design
of
the
vehicle
.
Fig
.
3
.
M3
sport
seat
.
INTERIOR
EQUIPMENT
0013195
The
early
E36
cars
areequipped
with
a
single
(driver
side)
airbag
in
the
steering
wheel
.
Startingwith
the
1994
models,
a
dual
airbag
Supplemental
Restraint
System
has
been
stan-
dard
equipment
.
Side-impact
airbags
in
the
front
doors
are
op-
tional
in
1997
4-door
cars
and
standard
equipment
in
all
1998
models
.
Through
1996,
E36
seatbelts
were
equipped
with
BMW's
original-designspring
tensioners
.
In
1997,
the
seat
base
de-
sign
was
modified
to
accommodate
a
pyrotechnic
(explosive
charge)
seatbelt
tensioner
.
Both
types
of
tensioners
arede-
signed
to
automatically
tension
the
belts
by
about2
inches(55
mm)
in
the
event
of
a
collision
.
The
padded
dashboard
houses
the
instrument
cluster
and
the
ventilation
and
heating
system
.
The
instrument
cluster
uses
large
easy-to-read
analog
instruments
and
is
removable
as
a
unit
without
removing
the
dashboard
.
The
Service
Inter-
val
Indicator
(SII)
will
remind
the
driver
when
thecar
requires
service
.
See
620
Instruments
.
The
Multi-Information
Display
(MID)
unit
in
thecenter
of
the
dashboard
comes
in
a
variety
of
four
configurations,
the
most
advanced
being
the
On-Board
Computer
(OBC)
.
See
Fig
.
4
.
Al¡
versions
of
the
MID
have
a
clock
and
calendar
.
In
addi-
tion,
different
versions
areequipped
with
a
"check
control,"
display
for
fuel-economy
information
and
system
warnings
.
Consult
the
owner's
manual
for
fui¡
operating
instructions
.