key BMW 540i 1998 E39 Service Manual

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51 5-21
Central Locking and Anti-Theft
Trunk lid gap
measurements 4 When installing, or adjusting trunk lid alignment, adjust posi-
tion of trunk
loclc striker with mounting bolts finger tight.
* Check trunk lid loclc operation with lid open.
Adjust trunk lid alignment. See
412 Trunk Lid, Tailgate for
lid adjustment specifications.
NOTE-
Do not lubricate lock or lock striker with grease.
Tailgate lock, emergency release
4 In case of electrical failure, there is an emergency tailgate
loclk release. The release is located in the tailgate behind the
tool door.
- With tool door open, remove access cover and pull to the
right to release tailgate.
ELECTRONIC ~MMOBILIZATION (EWS)
E39 cars are equipped with a passive theft-prevention sys-
tem. The Electronic Immobilization System (EWS) makes it
impossible to
startthe engine using any means other than the
special lkeys furnished with the vehicle.
NOTE-
Replacement EWS control modules or DME control modules
must be electronically aligned to each before the vehicle will
start. This requires the use of the BMW Service Tester
(DIS-
plus, GT1, or MoDiC). Without alignment, the engine will not
crank (for example: swapping a
known good DME control
module into another vehicle for test purposes will result in a
no crank situation).
In the EWS system, the ignition key is embedded with
acom-
puter chip (EEPROM) and coded. The key communicates
with the vehicle using a transponder in the lkey and a ring an-
tenna surrounding the steering lock cylinder. Up to
6 replace-
ment keys are permissible. Only an authorized
BMW dealer
can provide replacement keys.

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Central Locking and Anii-Theft
- If the starter engages, the following EWS inputs are function-
ing normally:
Ignition key
Code function
Transmission range switch or clutch position switch
Engine speed sensor
NO JE -
If a vehicle key is lost or stolen, the electronic authorization
for that key
can be cancelled using the BMW scan and di-
agnostic tools
DISplus, GTl or MoDiC.
Force applied to a ley can damage the electronic circuitry
in the key A damaged ley will not start the engine. In that
case, a new key should be purchased and initialized
by an
authorized BMW dealer.
EWS variations
EWS variations used in E39 cars are shown in E39 EWS ap-
plications
table below.
E39
EWS applications
I I Ifling antenna (surrounds ignition switch) I
System
designation
EWS
II
I I l~ransmitter I receiver module located in right side steering column cover I
E39 production
dates
SOP
- 311 997
I I IEWS 111 (3.2) control module incorporates transmitter1 receiver moduie functions /
Main components, changes, improvements
Key with EEPROM transponder
Control moduie located behind glove compartment, in electrical component panel
Control module located to left of steering column, under dashboard
K-Bus input
Transmitter
I receiver module eliminated
EWS 111 (3.2)
Transmission range selection input from automatic transmission control module
3
11997 - 911997
- EWS ill (3.3) Clutch
Hall-effect switch (replaces transmission range switch input)
911997 - 2002 EWS 111 (3.3) control
module with iSN code burned in (cannot be overwritten during
alignment)
Control module located to left of steering column, under dashboard

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Central Lockina and ~nti- heft
EWS control module, replacing
NOTE-
EWS control module location varies depending on version of
EWS installed.
Checlc the table €39 EWS applications.
- Disconnect battery negative (-) cable.
CA UTIOI\C
Prior to disconnecting the battery, read the battery discon-
nection cautions given in
001 General Warnings and Cau-
tions.
- EWS II: Control module is accessible from behind glove com-
partment.
Remove trim below glove compartment.
Lower relay and module holder to access EWS control
module
EWS
Ill: Control module (A836) is located to left of steering
column, below dash.
Remove trim below steering column.
Unplug module and remove from holder.
Installation is reverse of removal.
Transmitter / receiver module
Only EWS II vehicles are equipped with a separate transmit-
ter! receiver module attached to the steering column trim on
the right side of the column.
Ring antenna
- Remove ring antenna using BMW special tool 61 3 300.
Remove upper and lower steering column trim.
Disconnect harness connector to ring antenna.
Pry off ring antenna using
BMW special tool 61 3 300 or
equivalent flattened prying tool.
Alternatively, remove ignition switch key cylinder: With ignition
ltey in ON position (60" from LOCKED), insert
thin piece of stiff wire into opening (arrow) in lock cylinder
and pull lock cylinder out.
- Detach ring antenna harness connector.
Gently
work ring antenna off ltey cylinder.
CaonliayPuliiliirrl can,-A, R0,il. Rurilrrrri

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51 5-24
l~entral Locking and Anti-Theft
ANTI-THEFT SYSTEM (DWA)
When the anti-then system (DWA) is armed, the doors, hood,
windows, trunk lid or tailgate are monitored against forcible
entry by switches and sensors. The vehicle is protected
against being jacked up or towed away by a tilt sensor.
The control electronics for DWA are integrated in the General
Module (GM). In addition to the control electronics, the sys-
tem includes the following components.
* DWA horn
DWA LED indicator
- Tilt sensor
- Monitoring switches and sensors
The system can be armed or disarmed from the driver's door
lock,
trunklid lock, tailgate lockorthe remote transmitter (FZV
Itey). When armed, the alarm horn
soundsfor30seconds and
the low beam headlights and turn signals flash for
5 minutes.
The electronic immobilizer (EWS) is also activated when
DWA is activated.
The alarm is switched off immediately if key is inserted in door
loclt or FZV key button is used.
DWA LED Status
The DWA status LED is located in the rear view mirror (ar-
row). When DWA is armed, the LED flashes slowly to indi-
cate armed status.
The LED and exterior lights flash once and the alarm horn
sounds when the system is successfully armed ordisarmed.
The LED will continue to flash slowly denoting the armed sta-
tus. If any monitored input is not closed when the system is
armed, the LED will flash rapidly for
10 seconds to indicate
the fault.
Tilt sensor
-
4 The tilt sensor, located on the left side of trunlt or cargo com- -
partment, consists of a conductive liquid chamber, a proces-
sor board and metal probes. The probes are submersed in
the liquid and produce a resistance value dependent on the
tilt of the sensor (angle of the vehicle). This resistance be-
comes the reference value when the DWA system is armed.
.-

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Sunroof, adjusting
The sunroof is controlled by a set of cables that move the sun-
roof panel along guide rails when the motor is operated. The
sunroof can be adjusted without removing it from the car.
NOTE-
Be sure to check drains in front corners of sunroof carrier if
water is entering car through headliner.
- The sunroof panel should be adjusted under the following cir-
cumstances:
Sunroof misaligned with roof.
Sunroof does not close squarely.
* Wind noise at high speeds (sunroof closed).
Sunroof has been removed.
For correct sunroof alignment:
Sunroof must be fully closed.
Gap must be even all around edge of sunroof.
Front of sunroof must be flush to
1 mm (0.04 in.) below sur-
face of roof.
. Rear of sunroof must be flush to 1 mm (0.04) above sur-
face of roof.
NOTE-
Use a credit card to measure the gap. The card sllould insert
through the gap with equal resistance all around the perimeter.
Sunroof with steel roof panel, adjusting
- The headliner panel must be disengaged from the drive as-
sembly and moved rearward in order to access the roof panel
attaching screws.
CAUTIOI\C
Sunroof panel must never be moved to open position when . .
I the headliner is disenaaaed. 1
- Start with a fully closed roof panel.
- Remove drive motor access cover. See Sunroof motor, re-
placing.
Using hex key from tool kit, turn motor drive 90" counter-
clockwise.
Rear of sunroof panel will drop
2 to 3 mm (0.08 to 0.12 in).
This disengages headliner from sunroof panel.
- Push headliner panel rearward, exposing roof panel attach-
ing screws.

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l Sunroof
4 Adjusting rear roof height:
Remove fasteners
(A) and (6)
Slide in left and right side adjusting wedges (C) until ideal
setting is reached.
Press sunroof panel forward and tighten wedge nuts
(6).
* Tighten center nut (A).
4 Adjusting front roof height.
Loosen lefl and right fasteners
(A)
Set front of sunroof to ideal height by moving panel up or
down.
Tighten fasteners
(A).
Insert hex key in drive motor and turn 90" clockwise.
Pull headliner panel forward until it locks in place.
Tightening torque
Wedge locking nuts 1.5 Nm (1 3 in-lb)

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I Airbag System (SRS)
Two-stage airbag (MRS Ill)
Beginning with 2000 model year (911 999 production) the front
airbags were changed to a two-stage style airbag. This en-
sures that the force of
airbag inflation is not greater than nec-
essary to provide
protection. The airbags are designed to
Drovide "soit" de~lovment if the acceleration sensor detects a
iow-speed impact, and "hard deployment in higher speed im-
pacts.
NOTE-
A two-stage passenger airbag was used on cars built be-
tween
9/1998 and 3/1999. This pre-smart technology airbag
used two ignition stages. Stage one is designed to ignite first
during an impact. Stage two ignites after a timed period, as
programmed in the MRS
I1 control module.
Airbag indicator light
The MRS control module detects and stores system status
The
airbag indicator light in the instrument cluster displays
the status of the
airbag system when the ignition key is in "ac-
cessory" or
ON positions.
System normal: lndicator light comes on briefly, then goes
out.
- System malfunction: lndicator light fails to come on.
System malfunction: lndicator light comes on briefly, goes
out and lights up again.
The
airbag indicator light also comes on if the seat belt pyro-
technic tensioners have been triggered.

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Airbag System (SRS)~
MRS control module, replacing
- Disconnect negative (-) cable from battery and cover nega-
tive terminal with insulating material.
CAUTIOI\C
Prior to disconnecting the battery, read the battery discon-
nection cautionsgiven in001 General Warnings and
Cau-
tions.
- Remove center console between front seats. See 513 lnteri-
or Trim.
Remove module mounting nuts (arrows) and lift up control
module. Disconnect electrical harness connector.
Installation is reverse of removal.
Be sure that MRS control module ground cable is attached
to the module mounting stud.
Side-impact crash sensor, removing and
installing
- Make sure ignition key is OFF.
- Remove front seat. See 520 Seats.
Remove plastic door sill trim by lifting to release clips at one
end, then sliding off. Fold up carpet towards rear seat floor. If
necessary, remove floor level heater duct.

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OED-2
On-Board Diagnostics
Specialized OED II scan tool equipment is needed to access
the fault memory and
OED I1 data.
The extra hardware needed to operate the OED
I1 system
consists mainly of the following:
* Additional oxygen sensors downstream of the catalytic
converters.
Fuel tank pressure sensor and device to pressurize
fuel
storage system.
Several engine and performance monitoring devices
Standardized 16-pin
OED II connector under the
dashboard.
Upgraded components for the federally required reliability
mandate.
Malfunction indicator light (MIL)
OED II software illuminates the malfunction indicator light
(MIL) when emission levels exceed 1.5 times Federal
standards.
4 For E34 cars covered by this manual, three different MIL
symbols were used, depending on year and model.
MIL illuminates under the following conditions:
Engine management system fault detected for
two
consecutive OED iI drive cycles. See Drive cycle in this
repair group.
- Catalyst damaging fault detected.
Component malfunction causes emissions to exceed 1.5
times OED
II standards.
Manufacturer-defined specifications exceeded. Implausible input signal.
Misfire
faults.
Leak in evaporative system,
Oxygen sensors observe no purge
flow from purge valve 1
evaporative system.
ECM fails to enter closed-loop operation within specified
time.
ECM or automatic transmission control
module (TCM) in
"limp home" mode.
ignition key ON before cranking (bulb
check function).
OED
II fault memory (including the MIL) can only be reset
using a special scan tool. Removing the connector from the
ECM or disconnecting the battery does not erase the fault
memory.

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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