lock BMW 318i 1997 E36 Workshop Manual

GENERAL

This
repair
group
covers
removal
and
installation
of
the

front
and
rear
seats
.

FRONT
SEATS

The
front
seats
installed
in
E36
cars
come
in
either
manual

or
electrically
powered
versions
.
Cloth,vinyl
and
leather
ver-

sions
are
offered
.
M3
sport
seats
have
extra
bolsters
on
the

sides
of
the
sean-back,
a
thigh
support
bolster,
and
extra
con-

trols
for
sean
inclination
.

Seat
removal
and
installation
is
similar
for
all
versions
.
Seat
disassembly
differs
in
details
among
the
many
models
of

seats
.

Front
seat,
removing
and
installing

1
.
Move
seat
to
fui¡
forward
position
and
raise
it
as
far
as

possible
.
Remove
two
mounting
bolts
at
rear
of
sean

rails
.
See
Fig
.
1
.

2
.
Move
seat
to
fui¡
rear
position,
keeping
it
raised
.

3
.
Disconnect
negative
(-)
cable
from
battery
.



Fig
.1
.



Frontseat
rear
mounting
bolts
(arrows)
.

CAUTION-

Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this

manual
onpage
viii
.

520
Seats

SEATS
520-1

GENERAL
...
.
.
.
.
.
.
.
.
.
..............
.
.
520-1



Rear
seat
cushion
and
backrest,

removing
and
installing

FRONT
SEATS
.
.
.
.
.
.
......
.
.
.
...
.
.
.
.
.
.
520-1



(fixed
seat
back
models)
......
.
.
.
...
.
...
520-5

Front
seat,
removing
and
installing
...
.
.
.
..'
520-1



Rear
seat
cushion
and
backrest,

Manual
Front
Seat
Assembly
.............
520-3



removing
and
installing

fold-downsean
back
models
(



)
..
.
.
..
..
.
...
520-5
Power
Fronf
Seat
Assembly
..
.
.....
.
.
.
.
.
;
520-4



Rear
seat
backrest
side
section,

REAR
SEATS
.
.
.
.
.
.
.
.
.
............
.
...
520-5



removing
and
installing

(fold-down
seat
back
models)
..
.
.....
.
..
.520-6

4
.
Remove
plastic
caps
from
front
mounting
nuts,
and

then
remove
mounting
nuts
.
See
Fig
.
2
.

WARNING
-

Deactivate
front
seat
belt
lock
tensioners
before
proceeding
to
next
step
.
See720
Seat
Belts
.

NOTE-

Use
a
blanket
to
protect
door
sill
from
scuffing
bysean
rail
during
seatremoval
.

FRONT
SEA
TS

520-2



S
EATS

Fig
.
2
.



Frontseat
front
mounting
nut
(arrow)
.

FRONT
SEA
TS

0013166

5
.
On
2-door
cars
:
unhook
seat
belt
from
guide
on
seat

back
.

8
.
Remove
seatfrom
car
.

Fig
.
3
.



Seat
belt
mounting
bolt
(arrow)
.

0013216

9
.
Installation
is
reverse
of
removal
.
Keep
the
following
in

mind
:

6
.
Tilt
seat
back
to
access
and
unplug
electrical
harness



"
Use
wire
ties
orequivalent
means
to
keep
seat
har
connectors
.
Cut
or
untwist
wire
ties
as
necessary
.



ness
wiring
from
being
exposed
to
fraying
.
"
Reactivate
front
seat
belt
locks
.
7
.
On
4-door
cars
:
Unbolt
seat
belt
from
seat
frame
.
See



"
Start
all
seat
mounting
boits
.
Fig
.
3
.



"
Tighten
seat
mounting
fasteners
in
thís
sequence
:
in-
ner
front
;
outer
front
;
inner
rear,
outer
rear
.

Tightening
Torque

"
Front
seat
to
floor



........
.......
55
Nm
(41
ft-Ib)

520-
6
SEATS

4
.
Push
spring-loaded
lock
back
and
unclip
seat
back
.

See
Fig
.
9
.

Fig
.
9
.



Push
spring-loaded
clip
back
(arrow)
.

UU13117

5
.
Installation
is
reverse
of
removal
.
Make
sure
backrest

locks
at
top
seat
belt
connection
.

REA
R
SEA
TS

Rear
seat
backrestside
section,

removing
and
installing

(foid-downseat
back
modeis)

1.
Pull
front
of
cushion
up
and
out
of
clips
.

2
.
Fold
down
rear
seat
backrest
.

3
.
Lift
backrest
side
section
up
and
out
.
See
Fig
.
10
.

4
.
Installation
is
reverse
of
removal
.

0013175

Fig
.
10
.
Remove
backrest
sidesection
by
lifting
out
(A)
and
up
(B)
.

1#=am

GENERAL
.
...
.
.
.
......
.
.
.
.
.
.
.
.
.
......
541-1



Visor
Latch
Plate
.....
.
....
.
.
.
.
.
...
.
...
.541-4

Visor
Latch
..
.
............
.
.
.
..........
541-4

MANUAL
CONVERTIBLE
TOP
.
.
.
.
...
.
..
541-1



Visor
Latch
Motor
...
.......
.
.
.
..
........
541-5

Visor
Latch
Plate
.
.
......
.
.
.
...
.
.
.
.
.
.
.
..
541-1



Convertible
top
and
frame,
replacing
........
541-5

VisorLatch
.
.
.
.
.
.
.
.
..........
.
.....
.
.
.541-1



Convertible
top
drive
motor,
replacing



......
541-7

Convertible
Top
Lid
Release
Mechanism
.
.
.
.
541-2



Convertible
Top
Emergency
Operation
.....
.541-7

Convertible
top
and
frame,
replacing
....
.
.
.
541-2



Convertible
Top
Lid
.
.
.
.
...........
.
.....
541-9

POWER
CONVERTIBLE
TOP
.
.
.
.
....
.
.
.
541-2



ROLLOVER
PROTECTION
SYSTEM
..
.
.
541-9

FrontLatching
Mechanism
.
.
.
.
.
.
.
.
......
.
541-4

GENERAL

The
convertible
top
comes
in
three
versions
:
a
manually
op-erated
top,
a
semi-automatic
power
top
and
a
fully
automatic
power
top
.

NOTE-

The
convertible
top
control
module
(CVM)
is
located
behind
the
left
rearside
trim
panel
.
For
the
location
of
other
convertible
top
electric
components
see610
Electrical
Component
Locations
.

The
rear
window
in
the
convertible
models
is
made
of
a
strong,
flexible
vínyl
which
is
available
separately
.
Replace-

ment
of
the
rear
window
is
not
covered
in
this
manual
.

The
left
and
right
visor
latch
plates
can
be
accessed
by
re-
moving
the
trim
and
moldings
around
the
sides
and
top
of
the

windshield
.
Each
latch
is
secured
to
thetop
of
the
windshield

usingthree
bolts
.
Latch
position
is
adjusted
as
follows
:

541
Convertible
Top

CONVERTIBLE
TOP



541-1

"
Loosen
bolts

"
Latch
top

"
Align
top

"
Retighten
bolts
.
See
Fig
.
1
.

BMW
has
designed
a
specialbattery
tray
for
the
convertible

which,
in
conjunction
with
the
mass
of
the
battery
in
the
lug-

gage
compartment,
serves
to
dampen
convertible
body
flex
ing
and
vibration
.



Fig
.
1.



Visor
latchplate
is
held
to
top
of
windshieldwith
three
bolts
(arrows)
.

CAUTION-

The
E36
convertible
requires
a
specialbattery



VisorLatch
which
is
designed
for
constant
vibration
.
A
battery
not
designed
forthis
will
fa¡¡
much
earlier
.



Check
for
ease
of
release
and
locking
of
convertible
top
front
latches
.
Height
of
a
latch
can
be
changed
by
using
the
adjusting
screw
.
To
change
latch
tension,
it
is
necessary
to
re-
MANUAL
CONVERTIBLE
TOP



move
the
trim
on
the
front
bow
of
thetop
.
The
ball-joint
pull-rod
length
can
then
be
adjusted
.
Lubricate
latch
if
necessary
.
See

Visor
Latch
Plate



Fig
.
2
.

MANUAL
CONVERTIBLE
TOP

541-2



CONVERTIBLE
TOP

Fig
.
2
.



Manually
operated
frontlatch
.
Loosen
mounting
nuts
(A)
and
locknut
(B),
then
adjust
latch
height
with
hex-bolt
(C)
.
(Fully
automatic
front
latch
height
adjuster
is
similar
.)
Latch
tension

ís
adjusted
at
rod
ball-joint
end
(D)
.

Convertible
Top
Lid
Release
Mechanism

The
convertible
lid
release
handle
is
situated
in
the
trim

panel
behind
the
driver's
seat
.
To
remove
thehandle,
pull
its

plastic
insert
forward
and
remove
the
triminsert
.
The
handle
is

mounted
with
a
single
screw
.

Abowden
cable
is
routed
from
the
handle
to
the
left
lid
latch
.

Another
cable
is
routed
from
the
left
tothe
right
latch
inside
the

luggage
compartment
.
It
is
accessed
by
pulling
down
the
trim

lining
off
the
front
wall
of
the
compartment
.

Convertible
top
and
frame,
replacing

1
.
Open
convertible
top
partially
.
Open
convertible
top
lid
.



J
I~I~KX
Open
back
windows
.



_

v
2
.
Remove
fasteners
in
compartments
behind
door
posts

and
lift
out
complete
top
.
Count
number
of
shims
on

horizontal
mounting
bolts
.
See
Fig
.
3
.

3
.
Installation
is
reverse
of
removal
.
Be
sure
to
replaceU-
shaped
shims
on
horizontal
mounting
bolts
.
See
Fig
.
4
.

Fig
.
4
.



Horizontal
positioning
bolt(A)
and
U-shaped
adjusting
shims4
.
To
adjust
position
and
fit
oftop,
remove
or
add
U-



(B)for
convertible
top
.
One
of
two
main
mounting
nuts
(ar
shaped
shims
until
top
is
properly
aligned
.
Tighten
nuts



rows)
also
visible
.

and
screws
.

POWER
CONVERTIBLE
TOP

The
semi-automatic
top,
installed
in
1996
convertibles,

must
first
be
manually
released
from
the
visor
latch
plates
and
pushed
back
past
the
"tension
point,"
wheréupon,
the
auto-
matic
retracting
motor
and
linkage
take
over
and
pull
it
into
the
storage
compartment
behind
the
back
seat
.

POWER
CONVERTIBLE
TOP

Fig
.
3
.



Mounting
nuts
(A)
for
convertible
top
(two
oneach
side)
.
There
is
also
a
horizontal
bolt
with
spacers
oneach
side
(B)
.

0012754

The
fully
automatic
top,
standard
on
1997
and
later
convert-

ibles,
allows
complete
operation
of
the
top,
from
fully
open
to
fully
closed,withthe
push
of
atoggleswitch
on
the
console
.

The
top
switch
incorporates
a
"top
unlatched"
warning
LED
.

A
schematic
representation
of
the
fully
automatic
convert-
ible
top
is
shown
in
Fig
.
5
.

KL
30
CONVERTIBLE
BATTERY

(ON
TOP
MOTOR)

UP

DOWN

S2
-I
(ON
TOP
MOTOR)

(IN
TOP
STORAGE
WELL)

S4
E36
AUTOMATIC
CONVERTIBLE
S5
(ON
TRUNK
LOCK)I
TOP
CONTROLMODULE

I
LH
SIDE
TOP
LATCH
DRIVE)
1

M-4
m
í
A
7--
Offi-

Íl

ít~~

ENSOR

H
ARD
T
OP
LOCK
SIGNAL
O

1~~11
:i
q
SIGNAL

TOP
MOTOR
POSITION
SIGNAL

Fig
.
5
.



Semi-automatic
and
fully
automatic
convertible
top
system
.
Main
ad-
ditional
components
in
fully
automatic
top
shown
inside
dashed
lines
.

CONVERTIBLE
TOP



541-3

TOP
LID
MOTOR

EM
TOP
n

~
ll
í
9
.1

-----------
II



II
FRONT
I
M
LATCH
I

1



MOTOR
'I
I



1I
L---------
J
X

POWER
CONVERTIBLE
TOP

Convertible
top
drive
motor,
replacing



5
.
Working
in
convertible
top
storage
compartment
be-
hind
driver's
seat,
remove
convertible
top
linkage
rods
1
.
Open
convertible
top
partially,
stopping
when
convert-



from
top
of
motor
.
Refer
to
Fig
.
11
.
ible
top
lid
is
fully
upen
.
Remove
lid
.

2
.
Release
luggage
compartment
lock-out
by
pressing
on
microswitch
in
right
convertible
top
lid
latch
.
See
Fig
.

14
.

0012745

Fig
.
14
.
Rightside
convertible
top
lid
latch
.
Arrow
points
to
location
of
luggage
compartment
lock-out
microswitch
.

3
.
Open
luggage
compartment
.
Remove
trim
and
inner

lining
from
left
side
of
compartment
.

4
.
Disconnect
electrical
harness
connectors
at
top
motor
.

Release
emergency
release
cable
from
lever
.
Push
le-

ver
up
to
release
motor
.
See
Fig
.
15
.

uu12759

Fig
.
15
.
Convertible
top
motor
(A)
and
release
lever
(B)
in
luggage

compartment
.

CONVERTIBLE
TOP



541-
7

6
.
Remove
four
fastenersholding
motor
to
body
and
re-

move
motor
through
luggage
compartment
.
See
Fig
.

16
.

0012761

Fig
.
16
.
Convertible
top
motor
mountingscrews
(arrows)
.
Gasket
(A)
mustbe
renewed
when
motor
is
replaced
.

7
.
Installation
is
reverse
of
removal
.
Keep
the
following
in

mind
:

"
Replace
sealing
gasket
between
top
of
motor
and

body
.

"
Securemotormountingscrews
with
Locktite
®
270
or
equivalent
.

Tightening
Torque

"
Convertible
top
motor
to
body

mountingscrews
...
...
.
.
.........
10
Nm
(7
.5
ft-Ib)

Convertible
Top
Emergency
Operation

A
malfunction
in
the
electrical
system
or
another
fault
in
the

convertible
top
mechanism
can
cause
the
automatic
or
semi-
automatic
top
to
be
stuck
in
open,
shut,
or
intermediate
posi-

tion
.
The
following
general
procedures
are
suggested
in
order

to
close
the
top
in
an
emergency
situation
.
Resetting
proce-

dures
for
convertible
top
synchronization
after
emergency
clo-

sure
are
beyond
the
scope
of
this
manual
.

Main
Motor
.
To
release
thetop
linkage
from
the
motor,
lift

the
left
comer
of
the
rearseat
to
access
emergency
release

handle
.
See
Fig
.
17
.

POWER
CONVERTIBLE
TOP

541-
8



CONVERTIBLE
TOP

CAUTION-

In
caseof
failure
of
the
automatic
or
semi-auto-
matic
convertible
top
function,
only
use
the
emer-
gency
procedure
to
close
the
top,
never
to
open
it
.
An
authorized
BMW
dealer
should
then
be
con-
sulted
.

0012764

Fig
.
17
.
Convertible
topmotor
emergency
release
handle
under
rear
seat
.
Pull
in
direction
of
arrow
to
release
top
.

It
is
then
possible
to
push
thetop
manually
to
a
near
closed
position
.
In
the
case
of
the
semi-automatic
top,
simply
attach

and
lock
the
front
latches
.

Front
Latches
.
Once
the
fully
automatic
convertible
top
has
been
released
from
the
motor
and
manually
pushed
to
near-closure,
emergency
latchíng
ofthetop
is
possible
by
us-
ing
the
S-shaped
hex
key
provided
in
the
emergency
tool
kit
.

First,
remove
the
plastic
cover
over
the
latch
motor
in
the
front
bow
of
the
convertible
top
.
See
Fig
.
18
.

Next,
use
the
hex
key
from
tool
box
to
crank
the
front
latch-
es
shut
.
See
Fig
.
19
.

Luggage
Compartment
Cover
.
A
microswitch
in
the
right
convertible
top
lid
latch
prevents
the
luggage
compartment
from
being
opened
whilethe
lid
is
up
.
This
lockout
can
be
overridden
by
pressing
on
the
microswitch
.
Refer
toFig
.
14
.

POWER
CONVERTIBLE
TOP

Fig
.
18
.
Remove
plastic
cover
from
center
of
convertible
roof
front

bow
to
access
latching
motor
drive
.

0012762

Fig
.
19
.
Using
emergency
hexkey
to
move
front
part
of
convertible
top
.

CAUTION-

The
convertible
top
lid
and
the
luggage
compart-
ment
cover
interfere
with
each
other
and
cannot
beopen
at
the
same
time
.
To
avoid
damage
to
painted
surfaces,
an
assistant
should
keep
the
lid
down
until
the
luggage
compartment
cover
can
beclosed
.

Convertible
Top
Lid

The
components
of
the
convertible
top
lid
are
shown
in
Fig
.
20
.

Fig
.
20
.
Components
of
the
convertible
top
lid
.

ROLLOVER
PROTECTION
SYSTEM

The
lid
latches
are
cable
operated
by
a
drive
motor
located
in
the
left
sideof
the
luggagecompartment,
behind
the
trim
lin-

er
.
The
same
motor
is
used
to
raise
and
lower
the
lid
during

automatic
convertible
topoperation
.

The
latch
cables
must
be
adjusted
so
that
the
lidfits
snugly
against
the
body
when
locked
.

The
lid
drive
motor
can
be
removed
and
replaced
from
the

luggage
compartment
.

Two
spring-locaed
cassettes
are
mounted
behind
the
rear
seat
.
A
single
rollover
sensor,
mounted
on
the
left
cassette,
signals
the
convertible
top
module
(CVM)
of
animminent
roll-
over,
whereupon
the
module
triggers
both
cassettes
within

3j10th
of
a
second
.
See
Fig
.
21
.

Once
the
cars
ignition
has
been
switched
on,
the
rollover

sensor
performs
a
self-test
lasting
6
seconds
.
During
this
time

a
yellow
warning
light
is
lit
on
the
dashboard
.
If
thewarning
lightfails
to
go
out
after
6
seconds,
this
means
that
a
fault
has

been
detected
in
the
system
.
The
fault
is
stored
in
the
CM

Faults
canbe
retrieved
and
diagnosedby
special
diagnostic

equipment
.

NOTE-

Diagnosis
of
the
convertible
top
and
the
Rollover
Pro-
tection
System
are
beyond
the
scope
of
this
book
.
Your
authorized
BMW
dealer
has
the
proper
diagnostic
equipment
and
tools
to
carry
out
these
tasks
.

CONVERTIBLE
TOP



541-
9

Fig
.
21
.
Construction
of
the
rollover
protection
cassette
.

After
deployment,
thedetent
pawl
in
a
rollover
protection
cassette
can
be
retracted
using
the
special
tool
in
the
tool
kit,
fitted
to
the
screwdriver
handle
.
The
rear
seatheadrest
needs
to
be
raised
for
this
procedure
.

WARNING
-

Ensure
that
the
area
above
and
adjacent
to
the
roll-
over
bars
remains
clear
and
unobstructed
at
all
times
.

CAUTION-

"
Itis
not
possible
to
close
the
convertible
top
with
the
rollover
bars
extended
.

"
If
a
hardtop
is
mounted,
be
sure
to
install
the
pro-
tective
rollover
bar
covers
provided
with
the
hard-
top
to
prevent
damaglng
the
rear
window
in
case
of
deployment
.

0012744

ROLLOVER
PROTECTION
SYSTEM

600
Electrical
System-General

GENERAL
.
...........
.
.
.
.
.
.
.
.
.
...
.
...
600-1

Voltage
and
Polarity
........
.
.
.
.
.
.
.
.....
600-1

Ming,
Fuses
and
Relays
............
.
.
.
.
600-1

Electrical
System
Safety
Precautions
...
.
.
.
.
600-1

Electrical
Test
Equipment
.....
.
.
.
....
.
.
.
.
600-2

WIRING
DIAGRAMS
..
.
.
.
.
.
.
.
.
.
........
600-2

Ming
Codes
and
Abbreviations
..
.
...
.
....
600-2

ELECTRICAL
TROUBLESHOOTING
..
.
..
600-3

Voltage
and
Voltage
Drops
..........
.
.
.
.
.
600-4

GENERAL



Electrical
System
Safety
Precautions

A
brief
description
of
the
principal
parts
of
the
electrical
sys-
tem
is
presented
here
.
Also
covered
here
are
basic
electrical
system
troubleshooting
tips
.

Voltage
and
Polarity

The
vehicle
electrical
system
is
a
12-volt
direct
current
(DC)
negative-ground
system
.
A
voltage
regulator
controls
system
voltage
at
approximately
the
12-volt
rating
of
the
battery
.
Al¡
circuits
are
grounded
by
direct
or
indirect
connection
to
the

negative
(-)
terminal
of
the
battery
.
A
number
of
ground
con-

nections
throughout
the
car
connect
the
wiring
harness
to

chassis
ground
.
These
circuits
are
completedby
the
battery

cable
or
ground
strap
between
the
body
and
the
battery
nega-

tive
(-)
terminal
.

Wiring,
Fuses
and
Relays

Nearly
all
parts
of
the
wiring
harnessconnect
to
compo-

nents
of
the
electrical
system
with
keyed,
push-on
connectors

that
lock
into
place
.
Notable
exceptions
arethe
heavy
battery

cables
and
the
starter
wiring
.
The
wiring
is
color-coded
for
cir-

cuitidentification
.

With
theexception
of
the
battery
charging
system,
most

electrical
power
is
routed
from
the
ignition
switch
or
the
bat-
tery
through
the
main
fuse/relay
panel,
located
in
¡he
left
rear

comer
of
the
engine
compartment
.
Fuses
are
color
coded
to

indicate
current
capacities
.

The
relays
and
control
units/modules
are
mounted
in
vari-

ous
places
throughout
the
vehicle
.
See610
Electrical
Com-

ponent
Locations
.

ELECTRICAL
SYSTEM-GENERAL
600-1

Voltage,
measuring
.
.
.
................
.
.
600-4

Voltage
drop,
testing
.
.
.....
.
.....
.
......
600-4

Continuity,
checking
..
.
...
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
600-5
Short
Circuits
.
.
.
.
.
.
.
.
.....
.
...
.
.
.
.
.
.
.
.
.
600-5

Short
circuit,
testing
with
ohmmete'r
.
.
.
.
.
.
.
.
.
600-6

Short
circuit,
testing
with
voitmeter
.
.
.
.
.
.
.
.
.
600-6

TABLES
a
.
Terminal
and
Circuit
Numbers
..............
..
.600-3
Please
read
the
following
warnings
and
cautions
before
do-
ing
any
work
on
your
electrical
system
.

WARNING
-

"
The
cars
covered
by
this
manual
are
equipped
with
aSupplemental
Restraint
System
(SRS)
that
automatically
deploys
one
or
more
airbags
.
Each
airbag
unit
houses
an
explosive
powerful
charge
.
Any
work
involving
the
SRS
system
should
only
be
performed
byan
authorized
BMW
dealer
.
Making
repairs
without
the
proper
knowledge
and
special
test
equipment
may
cause
serious
per-
sonal
injury
.
See
721
Airbag
System
(SRS)
.

"
The
ignition
system
of
the
car
operates
at
lethal
voltages
.
People
with
pacemakers
or
weak
hearts
should
not
expose
themselves
to
the
ignition
sys-
tem
.
Extra
caution
mustbe
taken
when
working
on
the
ignition
system
or
when
servicing
theen-
gine
while
it
is
runningor
the
key
is
on
.
See
120
Ignition
System
for
additional
ignition
system
warnings
and
cautions
.

"
Before
operating
the
starter
without
starting
the
engine
(as
when
making
a
compressfon
test),
dis-
able
the
ignition
system
as
described
in
120
Igni-
tion
System
.

"
Keep
hands,
clothing
and
other
objects
clear
of
the
electric
radiator
coollng
fan
when
working
on
a
warm
engine
.
The
fan
may
start
at
any
tíme,
even
when
the
ignition
is
switched
off
.

GENERAL