board BMW 323i 1995 E36 Repair Manual

Table
f
.
1996
E36
Fuse
Positions



Table
f
.
1996
E36
Fuse
Positions

fuse



Rating



Protected
Circuit

28



5A



Central
locking
(see
also
fuse
7,
26,
35)Cruise
control
(see
also
fuse
46)Engine
control
module
(seealsofuse
16,
39)
Electronic
transmission
control
(A4S
310R/Z)
(seealso
f
use
26,46)
Driveaway
protection
(EWS
II)
(see
alsofuse
31,46)
Starting
system
(seealso
f
use
26)

29



7.5A



Headlights/foglights
(seealsofuse
11,
12,15,17,
23,
25,
30)

30



7
.5A



Headlights/foglights
(see
alsofuse
11,
12,15,17,
23,
25,
29)

31



5A



Driveaway
protection
(EWS
II)
(see
also
fuse
28,46)
Heating
and
A/C
(IHKR
E36)(see
also
fuse
16,
20,23,
37,39,
41,48)
Instrument
cluster
(seealso
f
use
23,27,
46)
Multi-function
clock
(seealsofuse
23,26,27,
45,46)
On-Board
Computer
(seealso
f
use
11,12,
23,26,
27,33,37,
45,46)
On-Board
Display
(see
also
fuse
23,27,45,
46)
,

32
1



30A
1
Cigar
lighter/ashtray
lights

33



10A



Central
body
electronics
(ZKE
IV)
(see
also
f
use
7,
14,35,
43)
Charging
socket
Engine
compartment
light
(also
see
fuse
37)
Instrumenf
illumination
(see
also
fuse
22,
25,37)
Interior
lights
(also
see
fuse
7,
43)
License
plate/luggage
compartment
lights
(see
alsofuse
37)
On-Board
Computer
(see
also
fuse
11,12,
23,
26,27,31,37,
45,46)
Park/taillights
(see
also
fuse
37)
Telephone
(see
also
fuse
43)

34



15A



Crash
control
module
Turn
signals/hazard
lights
(see
also
fuse
23)

35



25A



Central
body
electronics
(ZKE
IV)
(see
also
fuse
7,
14,33,
43)
Central
locking
(seealsofuse
7,
26,
28)
Convertible
roof
(see
also
fuse
7,
27,42,
43)
Roll-over
protection
(see
alsofuse
7,
42,
43)

36
1



30A
1
Wiper/washer
(seealso
fuse
44,45)

37



10A



Cassette
compartment
light
Engine
compartment
light
(also
see
fuse
33)
Heating
andA/C
(IHKR
E36)(see
also
fuse
16,20,
23,
31,39,41,
48)
Instrument
illumination
(seealso
fuse
22,
25,
33)
License
plate/luggage
compartment
lights
(see
also
fuse
33)
On-BoardComputer
(seealsofuse
11,12,
23,26,
27,31,33,
45,
46)
Park/taillights
(seealsofuse
33)

38



30A



ABS
(see
alsofuse
10,
21,23,
27,46,
47)
AST
(see
also
f
use
10,21,
26,27,
46)

ELECTRICAL
COMPONENT
LOCATIONS



610-29

fuse



1
Rating



1
Protected
Circuit

39



7
.5A
~
Engine
control
module
(see
alsofuse
16,28)
Heating
and
A/C(IHKRE36)
(see
alsofuse
16,20,
23,31,
37,41,
48)

40
1



30A
1
Power
seats
(seealsofuse
5)
41



30A
~
Heating
and
A/C(IHKRE36)(see
also
fuse
16,
20,
23,
31,37,39,
48)
Radiator
auxiliary
fan

42



7
.5A
~
Airbag
(SRS)
(see
also
fuse
26,
43)
Convertible
roof
(see
also
fuse
7,
27,35,
43)
Rol¡-over
protection
(seealso
f
use
7,
35,
43)

43



5A



Anti-theft
system
(Alpine)
(seealsofuse
47)Airbag
(SRS)
(seealso
fuse
26,
42)
Central
body
electronics
(ZKE
IV)
(see
also
fuse
7,
14,
33,35)
Central
locking
(see
also
fuse
7,
35)
Convertible
roof
(see
also
f
use
7,
27,35,
42)
Interiorlights
(also
see
fuse
7,
33)
Rol¡-over
protection
(see
also
f
use
7,
35,
42)
Telephone
(see
also
fuse
33)

44



15A
~
Glove
compartment
light
Sound
system
(seealsofuse
9)
Wiper/washer
(see
also
fuse
36,37,
45)

45



7
.5A



Multi-function
clock
(see
alsofuse
23,26,27,
31,46)
On-Board
Computer
(see
also
f
use
11,12,
23,
26,27,31,
33,
37,
46)
On-Board
Display
(see
also
fuse
23,27,
31,
46)
Wiper/washer
(see
also
f
use
36,
44)

46



15A



ABS
(see
also
fuse
10,
21,
23,27,38,
47)
AST
(seealso
fuse
10,21,26,
27,
38)
Brake
lights
Cruise
control
(seealsofuse
28)
Driveaway
protection
(EWS
II)
(seealsofuse
28,31)
Electronic
transmission
control
(A4S
310R)
(see
also
fuse
26,
28)
Instrument
cluster
(see
also
fuse
23,
27,
31)
Multi-function
clock
(see
alsofuse
23,26,
27,
31,45)
On-Board
Computer
(seealsofuse
11,
12,
23,26,
27,31,
33,37,
45)
On-Board
Display
(seealso
fuse
23,27,31,
45)

47



15A



ABS
(see
also
fuse
10,21,23,
27,38,46)
Anti-theft
(Alpine)
(see
alsofuse
43)

48



40A



Heating
and
A/C
(IHKR
E36)(see
also
fuse
16,
20,23,
31,37,39,
41)

WARNING
-

"
Fuse
desfgnations
and
locations
are
subject
to
changeand
may
varyfrom
car
to
cal
depending
on
options
.
If
questions
arise,
please
remember

that
an
authorized
BMW
dealer
is
the
bestsource

for
the
mostaccurate
and
up-to-date
information
.

"
To
locate
fuses
47-48,
refer
to
Fuse
Positions
inthis
repair
group
.

FOSE
POSITION
TABLES

610-30



ELECTRICAL
COMPONENT
LOCATIONS

Fuses
31-46

v

--------------

15A
I
Horn
Fuses21-30

Fuses
1-20

Fuse
positions
1-46
in
front
power
distribution
box

Tableg
.
1997-1998
E36
Fuse
Positions

fuse



Rating



Protected
Circuit

1



I



30A
I



Power
sunroof

4
1



15A
1
Heated
seats
(see
also
fuse
23)

5
1



30A
1
Power
seats
(see
also
fuse
40)

10



30A



ABS
(see
also
fuse
21,27,38,
46)
AST
(see
alsofuse21,27,
38,
46)

13
I



5A
I
Not
used

FUSE
POSITION
TABLES

0013034

2
I



5A



Engine
controls
DME
M5
.2
(see
also
fuses
16,18,
39,
46)

30A



Wiper/washer
module
(seealso
fuse
36,37,44)

20A
~
Rear
window
defogger/blower
(see
also
f
use23,43)
Antenna
(see
also
fuse
23)

5A
~
Central
locking
(seealso
fuse
28,31,35,
45)
Convertible
roof
(see
also
fuse
24,
27,42,
43,49)
9
1



20A
1
Sound
system
(see
also
fuse
33,43,
44)

11



7
.5A



Headlights/foglights
(see
also
fuse
12,15,
23,
25,29,
30)
On-Board
Computer
(see
also
fuse
12,23,
26,
27,31,33,
37,45,
46)

12



7
.5A



Headlights/foglights
(see
also
fuse
11,15,
23,
25,29,
30)
On-Board
Computer
(see
also
f
use
11,23,
26,27,
31,33,
37,45,
46)

14
I



30A
~
Central
body
electronics
(ZKE
IV)
(see
also
fuse
33,
35,43)
Power
windows
(seealso
f
use
19)

15



15A



Headlights/foglights
(see
alsofuse
11,
12,23,25,
29,
30)

Tableg
.
1997-1998
E36
Fuse
Positions

fuse



1
Rating



1
Protected
Circuit

16



5A



Engíne
control
DME
M5
.2
(see
alsofuse
2,
18,39,
46)
Engine
control
DME
MS
41
.1
(see
also
fuse
18,39,46,
50)
Heating
andA/C
(IHKR
E36)
(see
also
fuse
20,
23,31,39,41,
48)

17
I



10A
1
Not
used

18



15A



Engine
control
DME
M5
.2
(seealso
fuse
2,
16,39,
46)
Engine
control
MS
41.1(seealso
fuse
16,
39,
46,50)

19
1



30A
j
Power
windows
(seealsofuse
14

20



30A



Blowermotor
Heating
andA/C
(IHKR
E36)
(see
also
fuse
16,
23,
31,37,39,
48)
Park
ventilation

21



5A



ABS
(seealso
f
use
10,
27,38,
46)
AST
(see
also
fuse
10,27,38,
46)

22



5A



Instrument
illumination
(see
also
f
use
25,
33,
37)

23



5A



Antenna
(see
also
fuse
6)
Headlights/foglights
(see
also
fuse
11,
12,
15,
25,
29,
30)
Heated
seats
(see
also
fuse
4)
Heating
andA/C
(IHKR
E36)(see
also
fuse
16,
20,
31,39,41,
48)
Instrument
cluster
(seealso
f
use
27,
31,45,
46)
Multi-function
clock
(seealsofuse
26,27,31,
45,46)
On-Board
Computer
(see
also
fuse
11,12,27,
31,
33,37,45,
46)
On-Board
Display
(seealsofuse
26,27,
31,
45,46)
Rear
window
defogger/blower
(see
also
f
use6,43)Turn
signals/hazard
lights
(seealsofuse
34)

24



10A
~
Convertible
roof
(see
also
f
use
7,
27,42,43,
49)
Power
mirrors

25



5A



Headlights/foglights
(seealso
fuse
11,12,
15,23,
29,30)
Instrument
illumination
(seealso
fuse
22,33,
37)

26



10A



Back-up
lights
Electronic
transmission
control
(A4S
310R/Z)
(see
also
f
use
28,
46)
Electronic
transmission
control
(A5S
310Z)
(see
also
fuses
28,46)
Multi-function
clock
(see
also
fuse
23,
27,
31,
45,46)
On-Board
Computer
(see
alsofuse
11,
12,
23,
27,31,33,37,45,
46)

Table
g
.
1997-1998
E36
Fuse
Positions



Table
g
.
1997-1998
E36
Fuse
Positions

fuse



1
Rating



1
Protected
Circuit

27



5A



Airbag
(SRS)
(seealsofuse
42)
ABS
(see
also
fuse
10,21,38,
46)
AST
(see
alsofuse
10,
21,
38,
46)
Convertible
roof
(see
also
fuses
7,
24,
42,
43,49)
Instrument
cluster
(see
alsofuse
23,31,
45,46)
Multi-function
clock
(see
also
fuse
23,
26,
31,
45,46)
On-Board
Computer
(see
alsofuse
11,12,23,26,31,33,37,45,
46)
On-Board
Display
(see
also
f
use
23,27,
31,
45,46)

28



5A



Central
locking
(see
also
fuse
7,
31,35,
45)Cruise
control
(see
also
fuse
46)
Electronic
transmission
control
(A4S
310R/Z)
(seealso
f
use
26,
46)
Electronic
transmission
control
(A5S
310Z)
(seealso
(uses
26,
46)
Driveaway
protection
(EWS
II)
(see
also
fuse
31,45)
Starting
system
(seealsofuse
31,
45)

29



7
.5A



Headlights/foglights
(seealsofuse
11,
12,15,23,
25,
30)

30



7
.5A



Headlights/foglights
(seealsofuse
11,
12,15,
17,
23,25,
29)

31



5A



Central
locking
(seealsofuse
7,
28,
35,
45)
Driveaway
protection
(EWS
II)
(see
also
fuse
28,45)
Heating
andA/C
(IHKR
E36)(see
also
fuse
16,20,23,39,41,
48)
Instrument
cluster
(see
alsofuse
23,
27,45,
46)
Multi-function
clock
(see
alsofuse
23,26,27,
45,46)
On-BoardComputer
(seealsofuse
11,12,23,26,27,33,37,
45,46)
On-Board
Display
(seealso
f
use
23,
26,
27,31,45,46)
Starting
system
(see
also
fuses
28,
45)

32



30A



Cassette
compartment
(seealso
f
uses
33,
37,44)Charging
socket
(see
also
fuses
33,37,
44)
Cigar
lighter/ashtray
lights
(seealso
f
uses
33,37,44)
Glove
compartment
light
(see
also
fuses
33,
37,44)

ELECTRICAL
COMPONENT
LOCATIONS



610-31

fuse



1
Rating



1
Protected
Circuit

33



10A



Ashtray
light
(seealso
fuses32,
37,
44)
Cassette
compartment
(seealso
fuses
32,
37,44)
Cellular
phone
(seealso
fuse
43)
Central
body
electronics
(ZKE
IV)
(seealsofuse
14,
35,
43)
Charging
socket
(seealso
fuses
32,
37,44)
Cigar
lighter
(seealso
fuses
32,37,44)
Instrument
illumination
(see
also
fuse
22,
25,37)
Interior
¡ights
(seealso
fuse
43)
Glove
compartment
light
(see
also
fuse
32,
37,44)
License
plate/luggage
compartment
lights
(see
also
fuse
37)
Luggage
compartment
light
(seealso
f
use
37)
On-BoardComputer
(see
also
f
use
11,12,
23,26,
27,
31,37,45,
46)
Park/taillights
(seealsofuse
37)
Sound
system
(seealso
fuses
9,
43,44)

34



15A



Crash
control
module
Turn
signals/hazard
lights
(see
alsofuse
23)

35



25A
~
Central
body
electronics
(ZKE
IV)
(see
also
fuse
14,
33,
43)
Central
locking
(see
also
f
use
7,
28,
31,45)

36



30A



Headlight
washers
(see
also
fuses
3,
37)
Wiper/washer
(seealsofuse
3,
37,
44)

37



10A



Ashtray
light
(see
also
(uses
32,33,
44)
Cassette
compartment
light
(seealso
fuses
32,
33,
44)
Charging
socket
(see
also
fuses
32,
33,44)
Cigar
lighter
(see
also
f
uses
32,33,
44)
Glove
compartment
light
(see
also
fuses
32,
33,44)
License
plate/luggage
compartment
lights
(seealso
f
use
33)
Instrument
illumination
(seealso
fuses
22,
25,33)
On-Board
Computer
(seealsofuse
11,12,23,
26,
27,31,33,
45,
46)
Park/taillights
(see
alsofuse
33)
Wiper
washer
module
(see
also
f
uses
3,
36,
44)

38



30A



ABS
(seealsofuse
10,
21,
27,
46)
AST
(see
also
fuse
10,21,27,
46)

39



7
.5A



Engine
control
DME
M5
.2
(see
also
fuse
16,18,
46)
Engine
control
DME
MS
41
.1
(seealso
fuses
16,18,46,
50)
Heating
andA/C
(IHKR
E36)
(see
alsofuse
12,20,23,31,
41,48)

40



30A



Power
seats
(seealsofuse
5)

41



30A
~
Heating
andA/C
(IHKR
E36)
(see
alsofuse
16,20,23,
31,
39,
48)
Radiator
auxiliary
fan

42



7
.5A



Airbag
(SRS)
(seealsofuse
27)
Convertible
roof
(seealso
f
use
7,
24,27,43,
49)
Rol¡-over
protection
(seealso
f
use
43)

FOSE
POSITION
TABLES

610-32



ELECTRICAL
COMPONENT
LOCATIONS

Tableg
.
1997-1998
E36
Fuse
Positions

fuse



Rating



Protected
Circult

43



5A



Anti-theft
system
(Alpine)
(see
also
f
use47)
Cellular
phone
(seealso
fuse
33)
Central
body
electronics
(ZKE
IV)
(see
alsofuse
14,
33,35)
Convertible
roof
(seealso
fuse
7,
24,
27,
42,49)
Interiorlights
(also
see
fuse
33)
Rear
window
defogger/blower
(see
alsofuse
6,23)
Roll-over
protection
(see
also
fuse
42)
Sound
system
(seealso
fuses
9,
33,
44)

44



15A



Ashtray
light
(seealso
f
uses
32,
33,
37)
Cassette
compartment
light
(seealso
fuses
32,33,
37)
Charging
socket
(seealso
fuses
32,33,
37)
Cigar
lighter
(seealso
fuses
32,33,
37)
Glove
compartment
light
(seealso
f
uses
32,
33,37)
Sound
system
(seealsofuse
9,
33,
43)
Wiper/washer
(seealsofuse
3,
36,
37)

45



7
.5A



Central
locking
(see
also
fuses
7,
28,31,
35)
Drive-away
protection
(EWS
II)
(see
alsofuse
28,
29,31)
Instrument
cluster
(see
also
f
uses
23,27,31,
46)
Multi-function
clock
(see
also
f
use
23,26,27,
31,46)
On-Board
Computer
(see
alsofuse
11,
12,23,
26,27,
31,33,37,
46)
On-Board
Display
(seealsofuse
23,27,31,
46)
Starting
system
(seealso
fuses
28,31)

46



15A



ABS
(see
also
fuse
10,21,27,
38)
AST
(seealsofuse
10,
21,27,
38)
Brake
lights
Cruise
control
(see
also
fuse
28)
Electronic
transmission
control
(A4S
310R)
(see
also
fuse
26,
28)
Electronic
transmission
control
(A5S
310Z)
(see
also
f
use
26,28)
Engine
control
DME
M5
.2
(see
also
fuses
2,
16,18,
39)
Engine
control
DME
MS
41
.1
(seealso
fuses
16,18,39,
50)
Instrument
cluster
(see
also
fuse
23,27,31,
45)
Multi4unction
clock
(see
also
fuse
23,26,27,
31,45)
On-Board
Computer
(seealsofuse
11,
12,23,26,27,
31,
33,37,
45)

47
1



15A
1
Anti-theft
system
(see
also
fuse
43)

48



40A



Heating
and
A/C
(IHKR
E36)(see
also
fuse
16,20,23,
31,
39,
41)

49



20A



Convertible
roof
(see
also
fuses
7,
24,
27,
42,43)

50



5A



Engine
control
DME
MS
41
.1
(seealso
fuses
16,18,39,
46)

FUSE
POSITION
TABLES

WARNING
-

"
Fuse
designations
and
locations
are
subject
to
change
and
may
vary
fromcar
to
car,
depending
on
options
.
If
questions
arise,
please
remember
that
an
authorized
BMW
dealer
is
the
bestsource
for
the
most
accurate
and
up-to-date
information
.

"
Tolocate
fuses
47-50,
refer
to
Fuse
Positions
inthis
repair
group
.

612-4



SWITCHES
AND
ELECTRICAL
ACCESSORIES

Fig
.
6
.



Ignition
switch
set
screws
(arrows)
.

Ignition
lock
cylinder,
replacing

NOTE-

On
cars
with
EWS
11(production
date
1/95
and
later),
the
ring
antenna
surrounding
the
ignition
switch
must
be
removed
.
See
515
Central
Locking
and
Anti-theft
.

1
.
Insert
master
key
finto
lock
cylinder
and
turn
60°
to
"ra-
dio"
position
.
See
Fig
.
7
.

Fig
.
7
.



Turn
ignition
switch
60°
to
"radio"
position
(arrow)
.

2
.
Insert
a
thin
piece
of
stiff
wire
into
opening
in
lock
cylin-
der
and
pull
lockcylinder
out
.
See
Fig
.
8
.

NOTE-

On
early
cars
(up
to
production
date
1ol95),
turn
lock
cylinder
back
12°
to
release
.

INTERIOR
SWITCHES

0012555
0011807
0011808

Fig
.
8
.



With
ignition
key
in
"radio"position,
insert
stiff
wire
into
lock
opening
to
release
cylinder
.

Headlight
and
Foglight
Switch
Assembly

The
headlight
and
foglight
switches
are
retained
in
the
left

dashboard
insert
.
This
alsocontains
the
driver's
side
face
lev-

e¡
air
vents
.
To
service
either
switch,
remove
insert
byremov-
ing
a
single
screw
.
See
Fig
.
9
.

NOTE-

Access
to
electrical
hamess
connectors
behind
dash
insert
may
be
easier
if
lower
left
dash
trim
and
driverside
knee
bolsterare
removed
.
See
513
Interior
Trim
.

Fig
.
9
.



Remove
retaíning
screw
to
pull
out
left
dash
insert
(arrow)
.

620-
4
INSTRUMENTS

MULTI-INFORMATION
DISPLAY
(MID)

Severa¡
different
versionsof
the
Multi-Information
Display,

have
been
installed
in
E36
cars
.
The
top-of-the-line
model
is

called
the
Oh-BoardComputer
.
See
Fig
.
8
.

Ambient
temperature/ciock

Check
control/clock

0013028

Fig
.
8
.



Different
versions
of
Multi-Information
Display
(MID)
installed
in
E36
cars
.

Multi-Information
Display,

removing
and
installing

The
Multi-Information
Display
(MID)
is
illuminated
by
bulbs
.

It
mustbe
removed
to
replace
the
bulbs
.
Bulb
replacement
is

included
in
this
procedure
.

1
.
Remove
dashboard
parcel
shelf
.
Reach
under
MID

module
and
pushoutward
.
See
Fig
.
9
.

2
.
Slide
harness
retaining
lever
forward
to
release
MID

from
wiring
harness
.
See
Fig
.
10
.

3
.
To
Rmove
a
faulty
bulb,
use
anarrow
screwdriver
to

turn
bulb
base
45°
counter
clockwíse
.
See
Fig
.
11
.

MULTI-INFORMATIONDISPLAY
(MID)

111

Fig
.
9
.



Removing
the
Multi-Information
Display(MID)
module
.

0012564

Fig
.
10
.
MID
wiring
harness
release
lever
(arrows)
.

Fig
.
11
.
Turn
bulb
base
45°
counterclockwise
.

4
.
Installation
is
reverse
of
removal
.

0012566

640-4



HEATING
AND
AIR
CONDITIONING

Heater
box,
removing
and
installing

The
heater
box,
located
underneath
thecenter
of
the
dash-

board,
houses
theheater
core,
the
A/C
evaporator,
and
asso-

ciated
sensors
and
actuators
.
Removal
of
theheater
box

requires
that
the
A/C
refrigerant
be
discharged
.

CAUTION-

"
Removing
the
heater
box
requires
evacuating
the
AIC
system
.
DO
NOT
attempt
this
procedure
without
proper
tools
and
training
.

"
Any
person
who
services
a
motor
vehicle
air
con-

ditioner
must,
by
law,
be
properly
trained
and
cer-
tified,
and
use
approved
refrigerant
recycling
equipment
.
Technicians
must
complete
an
EPA-
approved
recycling
course
to
be
certified
UU12639

Fig
.
10
.
Heater
core
mounting
nuts
at
left
sideof
bulkhead
(arrow)
.

1
.
Drain
engine
coolant
.
See
170
Radiator
and
Cooling



wiper
assembly
shown
removed
for
clarity
.

System
.

2
.
Remove
complete
dashboard
.
See513
Interior
Trim
.

3
.
Remove
blower
motoras
described
earlier
.

4
.
Remove
nut
retaining
water
hose
flange
to
rear
bulk-
head
.
I'ush
flange
to
one
side
.
See
Fig
.
9
.

Fig
.
9
.



Nut
retaining
coolant
hose
flangeat
bulkhead
(arrow)
.

NOTE-

Clear
any
remaining
coolant
from
the
heater
core
by
blowing
compressed
air
finto
the
coolant
feed
hose
.

HEATER
AND
CONTROLS

0012638b

6
.
Cut
wire
tie
holding
wire
harness
to
heater
box
and
dis-

connect
cable
harness
connector
from
heater
box
.
See

Fig
.
11
.

0012647

Fig
.
11
.
Harness
connectors
(A)
and
cable
tie
(B)
at
heaterbox,
under
driver
side
dash
.

7
.
Followingmanufacturer's
instructions,
connect
ap-

proved
refrigerant
recovery/recycling/recharging
unitto

A/C
system
and
discharge
system
.

8
.
Unbolt
A/C
refrigerantlines
flange
from
engine
bay
bulkhead
.
See
Fig
.
12
.

9
.
On
models
with
rotary-knob
A/C
control
head
:
Discon-
5
.
Remove
nuts
from
heater
box
retaining
bracket
on
en-



nect
wiring
harness
connectors
to
A/C
control
module
gine
bulkhead
left
side
.
See
Fig
.
10
.
Repeat
procedure



in
center
console
and
remove
module
.
See
Fig
.
13
.
for
right
side
nuts
.

721
Airbag
System
(SRS)

Airbag
Systems
.......
.
...
.
.
.
.
.
....
.
.
.
.
721-1

AIRBAG
SENSORS
AND
ELECTRONICS
721-2

SRS
Warning
Light
and
Fault
Display
.
.
.
.
.
..
721-2

Airbagcontact
ring,
replacing
........
.
.
.
.
.
721-3

Airbag
crash
sensor,replacing
..
.
....
.
...
.
721-4

ZAE
control
module,
replacing
.
.
.
.........
721-5

GENERAL

This
repair
group
covers
only
removal
and
installation
of
air-
bag
components
.
Airbag
system
repair
and
fault
diagnosis
is
not
covered
here
.
Diagnostics,
component
testing,
and
airbag
system
repair
should
be
carried
out
by
trained
BMW
service
technicians
.

NOTE-

Special
test
equipment
is
required
to
retrieve
SRS
fault
codes,
diagnose
system
faults,
and
resetltum
off
the
SRS
indicator
light
.
The
SRS
indicator
light
will
remain
on
until
any
problem
has
been
corrected
and
the
fault
memory
has
been
cleared
.

When
servicing
cars
equipped
with
SRS,
the
precautions

on
this
page
mustbeobserved
to
prevent
personal
injury
.

Airbag
Systems

The
airbag
system
installed
on
E36
cars
through
the
1993
model
year
consisted
of
a
single
airbag
in
the
steering
wheel
.
This
systemcan
be
identified
by
the
orange
crash
sensors
lo-
cated
on
the
front
wheel
wells
and
the
absence
of
a
passenger
side
airbag
.

The
ZAE
airbag
system,
starting
in
model
year
1994
(pro-
duction
date9/93
and
later),
provides
both
a
driver
side
and
a
passenger
sideairbag
.
On
ZAE
vehicles,
the
crash
sensorsare
integrated
into
the
airbag
control
module,
located
under
thecenter
of
the
rear
seat
.
The
ZAE
control
module
triggers

deployment
of
the
airbags
When
it
sensos
the
vehicle
deceler-
ating
at
a
rate
equivalent
to
a
head-on
collisionof
at
least
13
mph
(18
km/h)
.

In
some
1997
4-door
models
and
all
1998
models,
side-impact
airbags
were
installed
in
the
front
doors
.
The
airbag
units
are

mounted
behindthe
door
trim
panels
.
Caution
mustbeused

when
working
on
vehicle
systems
in
the
proximity
of
air
bags,
such
as
the
steering
column,
the
dashboard,
or
the
doors
.

AIRBAG
SYSTEM
(SRS)



721-1

GENERAL
.
.
.
.
.
.
.
.
.
.
.......
.
......
.
.
.
.
721-1



Front
side-impact
airbag
crash
sensor,
removing
and
installing
....
.
.....
.
.....
.
721-5

AIRBAGS



..............
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
721-5

Driver
side
airbag,
removing
and
installing
.
.
.
721-5

Passenger
side
airbag,

removing
and
installing
..............
.
.
.721-6

Front
side-impact
airbag,
removing
and
installing
.
.
.
.
.
.
.
.
.
.
......
.721-7

WARNING
-

"
Airbag(s)
are
inflated
byan
explosive
device
.
Handled
improperly
or
without
adequate
safe-
guards,
the
System
can
be
very
dangerous
.
Spe-
cial
precautions
must
be
observed
prior
to
any
work
ator
near
the
driverside
airbag,
the
passen-
ger
side
airbag
(where
applicable)
or
the
side-im-
pact
airbags
(where
applicable)
.

"
The
airbag
is
a
vehicle
safety
system
.
Serious
in-
jury
may
result
if
System
service
is
attempted
by
persons
unfamiliar
with
the
BMW
SRS
and
its
ap-
proved
service
procedures
.
BMW
advises
that
all
inspection
and
service
be
performed
by
an
autho-
rized
BMW
dealer
.

"
Always
disconnect
the
battery
and
cover
the
neg-
ative
()
battery
terminal
with
an
insulator
before
startingdiagnostic,
troubleshooting
or
service
worknot
associated
with
SRS,
and
before
doing
any
welding
on
the
car
.

"
If
an
airbag
has
been
activated
due
to
an
acci-dent,
BMW
specifies
that
SRS
components
be
replaced
.
For
more
information
on
post-collision
SRS
service,
see
an
authorized
BMW
dealer
.

"
Do
not
allow
the
airbag
unit
to
come
in
contact
with
cleaning
solutions
orgrease
.
Never
subject
an
airbag
unit
to
temperatures
aboye
212°F
(100°C)
.
When
reconnecting
the
battery,
no
per-
son
should
be
inside
the
vehicle
.

"
Always
place
an
airbag
unitthat
has
been
re-
moved
from
its
packaging
with
the
padded
sidefacing
upward
.
Do
not
leave
an
airbag
unlt
unat-
tended
.

"
!f
the
airbag
unit
or
airbag
control
modulehas
been
dropped
froma
height
of
!
1
2
meter
(1
Y2
ft.)
ormore,
theairbag
unit
should
not
be
installed
.

Aírbag
system
components
are
shown
in
Fig
.
1.

GENERAL

721-2



AIRBAG
SYSTEM
(SRS)

Fig
.
1
.



Airbag
system
components
.

AIRBAG
SENSORSAND
ELECTRONICS

CA
UTION-

"
If
an
airbag
is
activated,
the
following
compo-
nents
must
be
replaced
:
Airbag
with
contact
ring
;
-Pyrotechnic
seat
belt
tensioners
(if
fitted)
;
-SRS
Control
module
;
-Impact
sensors
;
All
airbags
which
did
not
deploy
.

"
Consult
your
BMW
dealer
for
parts
and
service
information
.

TheE36
airbag
system
consists
of
the
following
compo-

nents
:
crash
sensors
(in
earlycars,
through
1993),
an
elec-

tronic
control/monitoring
module
(with
integrated
crash

sensor
in
ZAE
systems),
an
indicator
light
in
the
instrument
panel,
and
inflatable
airbags
equipped
with
gas
generators
in

the
steering
wheel
and
in
the
passenger
side
of
the
instrument

panel
(ZAE
systems)
.

Some
1997
and
al¡
1998
carsalso
have
side-impact
airbags

in
the
front
doors
.

AIRBAG
SENSORS
AND
ELECTRONICS

1.
Crash
sensors
(through
1993)



wheel
2
.



SRS
control
module
in
front
of



5
.



Side-impact
airbags
(1997/98)
glove
compartment
(through



6
.
ZAE
control
module
under
rear
1993)



seat
(from
1994)
3
.



Passenger
side
airbag
unit
in



7
.
Side-impact
airbag
crash
sensors
dashboard
(ZAE
system)



in
door
silis
(1997/98)
4
.



Driver
side
airbag
unitin
steering



8
.



Knee
bolsters

In
addition
to
the
airbags,
the
vehicles
are
equipped
wíth

knee
bolsters
for
extra
protection
.

SRS
Warning
Light
and
Fault
Display

The
airbag
system
utilizes
a
self-diagnostic
control
module

to
detect
and
store
system
faults
.
If
a
fault
is
detected,
the

SRS
indicator
in
the
instrument
cluster
comes
on
and
stays

on
.

When
the
ignition
key
is
tumed
on,
the
indicator
light
will
illu-

minate
for
approximately
4-6
seconds
.
The
illuminated
light

indicates
the
self-testof
the
electronic
control/monitoring

module,
the
ignítors
and
crash-sensorcircuits,
and
the
system

wiring
.
The
airbag
system
should
be
inspected
byan
autho-

rized
BMW
dealer
if
the
indicator
light
does
not
come
on,
ifit

does
not
go
out
in
approximately
4-6
seconds
after
switching

onthe
ignition,
or
if
the
light
comes
on
during
driving
.
If
the

system
has
detected
a
fault,
the
light
will
come
on
and
stay
on
.

721-
6



AIRBAG
SYSTEM
(SRS)

5
.
Carefully
lift
airbag
unit
off
steering
wheel
and
discon-



6
.
Installation
is
reverse
of
removal
.
Tighten
right
side
nect
orange
harness
connector
from
rear
of
airbag
unit
.



screw
on
airbag
first
(as
viewedfrom
driver's
seat),

See
Fig
.
10
.



then
left
side
screw
.

NOTE-



NOTE-

In
some
models,
theairbag
electrical
connection
to
the



If
there
is
no
electrical
harness
connector
between
the
steering
wheel
isvia
aplug
in
back
of
the
airbag
unit
.



airbag
and
the
steering
wheel,
be
sure
to
fit
the
push
There
is
no
wire
harness
to
disconnect
.



in
electrical
plug
in
back
of
the
airbag
finto
the
proper
re-
ceptacle
in
the
steering
wheel
.

Fig
.
10
.
Driver
sideairbag
unit
harness
connector
(arrow)
.

AIRBAGS

WARNING
-

"
Store
the
removed
airbag
unit
with
the
horn
pad
facing
up
.
If
stored
facing
down,
accidental
de-
ployment
couldpropel
it
violently
into
the
air,
causing
injury
.

"
Once
an
airbag
is
removed,
the
car
must
not
be
driven
.

"
Do
not
connect
the
battery
with
the
airbag
dis-
connected
.
A
fault
code
will
be
stored,
setting
off
the
SRS
warning
light
.
Special
tools
are
needed
to
reset
the
fault
memory
.

"
Special
instructions
apply
when
installing
an
air-
bag
equipped
steering
wheel
.
See
320
Steering
and
Wheel
Alignment
.

"
Once
the
airbag
unit
is
installnd
and
all
other
ser-vice
procedureshave
been
completed,
start
the
engíne
and
check
that
the
SRS
warning
light
goes
out
.
If
the
warning
light
stays
on,
the
SRS
system
will
not
function
as
designed
.
Have
the
system
diagnosed
and
repaired
by
an
authorized
BMW
dealer
.

0013184

Tightening
Torque

"
Airbag
unitto
steering
wheel
........
8
Nm
(71
in-lb)

Passenger
side
airbag,

removing
and
installing

1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
negative
terminal
with
insulating
material
.

2
.
Remove
glove
compartment
.
See
513
Interior
Trim
.

3
.
Lift
cover
from
topof
passenger
sideairbag
on
dash-
board
.
See
Fig
.
11
.

0013108
Fig
.
11
.
After
removing
glove
compartment,
lift
out
passenger
side
air-
bag
cover
.
Note
airbag
mounting
bolts
(A)
and
airbag
electri-
cal
connector
(B)
.

4
.
Remove
passenger
sideairbag
mounting
bolts
.
Dis-
connect
electrical
harness
connector
from
rear
of
air-
bag
unit
and
remove
airbag
.

5
.
Installation
is
reverse
of
removal
.
Make
sure
wiring
har-
ness
is
not
pínched
when
installing
airbag
unit
in
dash-board
.