1996 BMW 318i EWS II

515-8



CENTRAL
LOCKING
AND
ANTI-THEFT

Central
Body
Electronics
(ZKE
IV)



Electronic
Immobilization
System
(EWS)

Beginning
withvehicles
produced
9193
(model
year
1994),



The
electronic
anti-theft
system
known
as
EWS
was
first
in-

the
centrallocking
system
was
integrated
with
sunroof
and



troduced
in
January
1994
.
The
early
version
of
the
system

window
closure
into
the
Central
Body
Electronics
(ZKE
IV)



uses
a
starting
inhibition
module
to
interrupt
the
ignition,
the

(generation
four)
system
.
The
control
module
for
this
system



fuel
injection
and
the
starter
motor
.
This
system
is
activated

ís
mounted
in
front
of
the
glove
compartment
.



and
deactivated
by
the
centrallockíng
system
.
The
control

module
for
the
system
is
installed
under
the
left
side
of
the

Inthis
system
two
microswítches
are
operated
viathe
door



dashboard
.

lock
cylinder
at
both
front
doors
.
Turning
the
key
approximate-

ly
45°
(position
1)
operates
the
door
locking
microswitch
and



Startingwith
modeis
built
since
January
1995,
E36
cars

activates
the
alarm
system
.
Holding
the
key
in
thatposition



come
equipped
with
a
sophisticated
coded
electronic
immobi

also
closes
any
open
windows
and
the
sunroof
.



lization
system
called
EWS
II
.
Foraschematic
of
the
system,

refer
to
Fig
.
21
.

Turning
the
key
approximately
45°
in
the
opposite
direction

through
position
0
actuates
theunlocking
microswitch
and
de-

activates
the
alarm
system
(position
2)
.
See
Fig
.
20
.
NOTE
-

The
EWS
11
system
is
also
sometimes
referred
to
as
the

Driveaway
Protection
System
or
the
electronic
immobi-
lization
system
.

On
EWS
II
equipped
cars,
the
ignition
key
is
embedded
with

a
computer
chip
and
permanently
encoded
.
A
primary
code
is

programmed
into
the
keyand
finto
the
vehicle
itself
.
A
second-

ary
code
is
changed
every
time
the
vehicle
is
started
.
If
thekey

code
and
EWS
II
control
module
code
do
notmatch,
the
en-

gine
management
control
module
and
the
starter
are
dis-

abled
.
EWS
II
ignition
keyscannot
be
duplicated
.

The
system
is
designed
to
have
up
to
ten
keys
and
only
an

authorized
BMW
dealer
can
provide
replacement
keys
.
j
NOTE-
0011762a



ft
is
possible
to
damage
the
electronic
circuítry
in
the
Fig
.
20
.
ZKE
IV
door
lock
cylinder
positions
.



key,
rendering
if
unusable
.
In
that
case,
a
new
key

shouldbe
purchased
and
initialized
byan
authorized
BMW
dealer
.

LOCKING
SYSTEM
AND
ELECTRONIC
IMM081LIZATION

CLUTCH

SWITCH

Fig
.
21
.
EWS
II
system
.

TRANSMITTER/

RECEIVER

`I
MODULE

HALL

y
EFFECT

TD

CENTRAL
LOCKING
AND
ANTI-THEFT



515-9

DME

DIAGNOSIS

"
D
`
mol
111

IIIIIIIII

.r

LOCKING
SYSTEM
AND
ELECTRONIC
IMMOBILIZATION

515-10



CENTRAL
LOCKING
AND
ANTI-THEFT

EWS
II
control
module,
replacing

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
vüf
.

2
.
Remove
glove
compartment
as
described
in
513
Inte-

rior
Trim
.

3
.
Remove
EWS
II
control
module
harness
connector
.

Pull
module
out
of
bracket
.
See
Fig
.
22
.

NOTE-

The
EWS
11
module
should
be
identified
with
EWS
11
markings
.

4
.
Installation
is
reverse
of
removal
.

Ring
antenna,
replacing



4
.
Cut
off
wire
ties
holding
wiring
harness
to
steering
col-

umn
.
1
.
Disconnect
negative
(-)
cable
from
battery
.

CAUTION
-

Prior
to
disconnecting
the
battery,
read
the
battery

disconnectioncautionsgiven
at
the
front
of
this
manualonpage
viii
.

2
.
Remove
lower
steering
column
cover
.
See
Fig
.
23
.

Transmitter/

receiver
Ring

r
module
antenna

Fig
.
22
.
Location
of
EWS
II
components
.

LOCKING
SYSTEM
AND
ELECTRONIC
IMMOBILIZATION

Fig
.
23
.
Steering
column
cover
retaining
screw
(arrow)
.

5
.
Gently
pry
off
ring
antenna
from
ignition
switch
.

7
.
Installation
is
reverse
of
removal
.

0012543

3
.
Remove
lower
left
dash
trim
panel
as
described
in
513

Interior
Trim
.

6
.
Unplug
ring
antennaharness
from
EWS
II
transmit-

ter/receiver
module
as
described
below
.

EWS
II
transmitterlreceiver
module,

replacing

1
.
Disconnect
negative
(-)
cable
from
battery
.

CAUTION-

Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
onpage
viii
.

2
.
Remove
lower
left
dash
trim
panel
and
knee
bolster
as
described
in
513
Interior
Trim
.

3
.
Unclip
auxiliary
relay
panel
under
steering
column
and
lower
it
to
access
relays
and
harness
connectors
.
See
Fig
.
24
.

Fig
.
24
.
Lowering
the
left
side
auxiliaryrelay
panel
.

CENTRAL
LOCKING
AND
ANTI-THEFT



515-11

0013164

4
.
Disconnect
harness
connector
from
transmitter/receiv-
er
module
.
Unclip
module
from
panel
.
See
Fig
.
25
.

5
.
Installation
is
reverse
of
removal
.

0
A

0013035

Fig
.
25
.
Position
of
EWS
II
transmitter/receiver
module
(A)
on
left
side
auxiliaryrelay
panel
.

LOCKING
SYSTEM
AND
ELECTRONIC
IMMOBILIZATION

4
.
Rear
adjustment
:
Loosen
rear
adjusting
wedges
and
push
in
or
out
until
rear
of
sunroof
is
aligned
correctly
withroof-top
.
See
Fig
.
5
.

0013103
Fig
.
5
.



Adjust
rear
of
sunroof
by
loosening
nuts
1
and3
.
Push
adjust-
íng
wedges2
in
or
out
to
achieve
correctheight
.

NOTE-

"
Push
sunroofforward
before
retightening
wedge
fas-
teners
.

0013170

Fig
.
6
.



Adjust
front
of
sunroof
by
loosening
screw
(arrow)
.
Push
sun-
roof
up
or
down
to
achieve
correctheight
.

SUNROOF
540-
3

NOTE-

Use
Loctite®
270
or
an
equivalent
thread
sealing
com-
pound
when
reinstalling
theretaining
screws
.
Alterna-
tively,
install
new
screws
.

6
.
Open
sunroof
slightly
.
Rear
of
sunroofshould
be2
to
3
mm
below
surface
of
roof
.

7
.
Slide
sunroof
liner
slowly
and
carefully
forward
out
of
roof
cavity
as
far
as
possible
.

Sunroof
Height
Adjustment
Specifications

"
Rear
........
....
.
.
flush/1
mm
higher
than
roof
top
"
Front
...
..
.
....
..
.
..
flush/l
mm
lower
than
roof
top

Tightening
Torque

"
Front
orrear
adjusting
fasteners
...
...
6
Nm
(53
in-lb)

Sunroof
motor,
removing
and
installing
"
Use
Loctite®270
oran
equivalent
thread
sealing
com-
pound
when
reinstalling
the
retaining
fasteners
.
Alter-



The
sunroofshould
be
in
theclosed
posítion
before
remov-
natively,install
new
fasteners
.



ing
or
installing
the
sunroof
motor
.
If
necessary,
manually

5
.
Front
adjustment
:
Loosen
retaining
screws,
then
push



close
the
sunroof
panel
as
described
under
Sunroof
panel,

frontof
sunroof
panel
up
or
down
until
it
is
aligned
cor-
emergency
ciosing
.

rectly
with
roof-top
.
Retighten
screws
.
See
Fig
.
6
.



1
.
With
ignition
switch
off,
Rmove
access
panel
from
be-low
sunroof
motor
.
Refer
to
Fig
.
2
.

2
.
Remove
sunroof
motormountingscrews
.
See
Fig
.
7
.

0011825

Fig
.
7
.



Sunroof
motor
mountingscrews
(A
and
B)
.
Screw
at
A
is
longer
than
screws
at
B
.

SLIDE-TILT
SUNROOF

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
.

The
left
latch
in
the
fully
automatic
version
hastwo
mi-
croswitches
(S7
and
S8)which
signal
open,
closed
and
latched
states
.
See
Fig
.
8
.

The
length
of
the
dead
center
point
rod
is
critica¡
lo
correct
opening
and
latching
of
the
convertible
top
.
See
Fig
.
9
.

Dead
Center
Point
Rod

"
Dimension
A
........
205
.5
f
1
mm
(8
.09
t0
.04
in)

Visor
Latch
Motor

The
fully
automatic
convertible
top
is
latched
and
unlatched
by
one
electric
motor
installed
in
the
front
roof
bow
.
To
re-
place,
remove
front
cover
trim
from
the
roof
.
Remove
electri-
cal
harness
connectors
from
motor,
andremove
mounting
screws
.
Slide
the
motor
off
the
output
shafts
to
the
left
and
right
latches
.

During
reinstallation,
theoutput
shafts
must
be
tumed
until
the
S8
microswitch
in
the
left
latch
is
tripped
.

Convertible
top
and
frame,
replacing

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



Fig
.
9
.



Preset
lengthof
dead
centerpoint
rod
.
Open
back
windows
.

2
.
Fully
automatic
power
convertible
top
:
Remove
front
cover
trim
from
top
.
Disconnect
electrical
harness
con-

nectors
from
frontlatch
motor
.
Disconnect
connectors

from
S7
and
S8
microswitches
at
left
latch
.

Motors
M1
Convertible
top
M2
Convertible
top
lid
M3Front
latch
(fully
automatic
top)

Microswitches
S1
&S2
In
convertible
top
motor
S3
In
convertible
top
storage
compartment
S4
In
top
linkage
(semi-automatic
only)
S5
In
luggage
compartment
latch
S6
In
right
convertible
top
lid
latch
S7&S8
In
left
conv
.
top
latch
(fully
automatic)

Fig
.
8
.



Locationof
automatic
and
semi-automatic
convertible
latch
mechanisms,
motors
and
microswitches
.

CONVERTIBLE
TOP



541-5

POWER
CONVERTIBLE
TOP

541-
6



CONVERTIBLE
TOP

3
.
Remove
headliner,
starting
from
front
and
working



7
.
Remove
fasteners
in
bottom
of
storage
compartments

backward
.
Note
arrangement
and
lacing
of
tensioning



behind
door
posts
and
lift
out
complete
top
.
Note
num

cable
so
it
can
be
reinstalled
in
its
original
configura-



ber
of
shims
on
horizontal
mounting
bolt
.
See
Fig
.
12
.

tion
.
See
Fig
.
10
.

0012748

Fig
.
10
.
Headliner
tensioning
cable
and
some
of
its
retaining
eyelets
(arrows)
.

4
.
Disconnect
electrical
harness
connector
from
S4
mi-

croswitch
in
middle
linkage
of
convertible
top
.

5
.
Disconnect
electric
motor
linkage
rods
in
convertible

top
storage
compartment
behind
left
rearseat
.
See
Fig
.

Vizib1

Fig
.
11
.
Convertible
top
linkage
rods(arrows)
in
compartment
behind
left
rear
seat
.

POWER
CONVERTIBLE
TOP

8
.
Installation
is
reverse
of
removal
.
Be
sure
to
replace
U-

shaped
shims
on
horizontal
mounting
bolts
.
See
Fig
.

13
.

0012754

Fig
.
13
.
Horizontalpositioning
bolt
(A)
and
U-shaped
adjusting
shims
(B)
for
convertible
top
.
One
of
two
main
mounting
nuts
(ar-
rows)
also
visible
.

6
.
Pull
electrical
harness
through
to
disengage
from
top
.



9
.
To
adjust
position
and
fit
oftop,
Rmove
or
add
U-
shaped
shims
until
top
is
properly
aligned
.
Tighten
nuts

and
screws
.