2000 BMW 540i Ignition switch

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1 Brakes
- Remove precharge pump mounting bracket fasteners and re-
move pump.
- Installation is reverse of removal, noting the following:
Be sure to replace rubber pump mounts if damaged
01
worn.
Bleed brakes as described earlier.
Tightening torque Brake line
to precharge pump 18 Nrn (13 ft-lb)
DSC pressure sensor (1 999 - 2002 models)
On 1999 and later DSC systems, the DSC pressure sensor is
screwed into the DSC hydraulic unit (right rear of engine com-
partment).
WARNING-
* €39 cars require special BMW service equipment to prop-
erly bleed the brakes. Removal of the
DSCpressure sensor
is not recommended unless this equipment is available. For
safety reasons, the brake system on cars with ABS must be
bled using the procedures described in this repair group.
Switch off ignition and remove
key to male sure brake
system cannot be activated.
- Disconnect electrical harness connector at switch.
- Use BMW special tool 34 5 160 to remove and install sensor.
Inspect threads and sealing surfaces for damage.
* Work quicltly to avoid excessive brake fluid leakage.
Tightening torque
Pressure sensor
to hydraulic 19 Nrn (14ft-lb)
unit
- Reconnect harness connector
- Bleed front brakes as described earlier.
- Press on brakes and check for leaks at sensor.
- Turn on ignition and firmly depress brake pedal. Check that
DSC warning light does not come on.

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400-9
Body-General
Battery safety terminal
(BST)
4 Starting with 1999 models (9198 production and later), a py-
rotechnic (explosive charge) device automatically discon-
nects the battery positive terminal during impacts. Key
features,
like power windows and door locks, remain opera-
tional.
Security
Electronic immobilization (EWS)
Ignition key transponder signal All
E39 vehicles incorporate an electronic immobilization sys-
tem known as EWS. This svstem uses a wireless comrnuni-
cation link between a transponder chip in the ignition key and
the ring antenna surrounding the ignition switch. The EWS
control module blocks the starting of the vehicle unless the
correct coded ignition key is used.
NOTE-
Electronic immobilization is sometimes referred to as the
driveaway protection system.
Antitheft alarm (DWA)
This is adealer-installed option for which the E39 vehicles are
factory-wired. When armed, the system monitors door
loci(
contacts and trunk and engine hood locks and sounds a siren
if it detects tampering.
E39 interiors have a unique character, with a combination
of
sporty features and innovativedesign. All body versions were
made in a wide choice of interior and exterior colors. New col-
ors with matching leather or leatherette upholstery were intro-
duced for each model year.
Driving
comfort is enhanced by power steering, tilt steering
wheel, height-adjustable front seats, and electrically adjust-
able and heated rear-view mirrors. Inside the car there are
reading lights at four seating positions.

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51 2-2
I Door Windows 1
This repair group covers door glass, window regulator and
power window motor repair information.
CA U JIO&
All E39 models are equipped with side-impact airbags in the
front doors. Some models are also equipped with
airbags in
the rear doors. Be sure to read the
airbag warnings and cau-
tions in 721
Airbag System (SRS).
Electric window switch replacement is covered in 612
Switches.
The windshield, rear window, fixed rear doorglass, and cargo
compartment glass (Sport Wagon only) are bonded using
special adhesives and tools. It is recommended that bonded
glass replacement be done by an authorized
BMW service fa-
cility or an automotive glass installer.
Special tools
Some window repair operations require special tools.
Power windows
- Power window features in E39 models include:
Control of the front and rear door window motors is carried
out directly by the General Module (GM
Ill).
One-touch operation in both directions on all four windows.
Cable type window regulator used for all door windows.
. Anti-trap protection provided by pressure sensitive finger
guard.
Right front and each rear door has a single window switch
located in door handle trim.
Rear door window switches can be deactivated by press-
ing child lock-out switch in the driver's window switch block.
Convenience closinglopening of the windows from driver's
loci( cylinder or convenience opening only from remote un-
lociting feature (FZV) remote key.
Window (FZV) operation can be owner customized with
Car Memory function. See 515 Central Locking and Anti-
Theft.
After ignition is switched off, electric windows can be oper-
ated until a door is opened or until
I6 minutes has elapsed.
The GM
IiI bases window motor end position on current
draw (load). There is a maximum window motor run time of
6 seconds. The motor is then switched off even if the end
position load sensor fails.

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51 5-6
(Central Locking and Anti-Theft
Each rear door is equipped with the child lock-out lever, pre-
venting the door from being opened from the inside regard-
less of loclc button position.
Starting with models produced afler
911997, the General
Module and electronic immobilizer (EWS) interface via the
K-
Bus to monitor double lock status and to initiate double loclc
override. This feature allows the doors to be opened from the
inside if a key accepted by EWS is switched on in the ignition.
See Single lock and double lock function.
The door loclc buttons are mechanically uncoupled from the
actuators when locked. The remote keyless entry system
(FZV) is standard equipment. This allows for elimination of
the passengers side door
loclt cylinder.
Another function of the locking system is the
sofl close trunk
(SCA) system, where applicable.
Single lock and double lock function
(2000 and later models)
On models produced after
911999, each door lock actuator in-
corporates two motors:
Single lock motor controls the mechanical loclc mechanism
when the central lock switch is pressed to single loclc the
vehicle. The loclc mechanism is fully locked at this point but
can stil. be openeo from
the interor by pulng the appropri-
are interior door nandle lwce or by pressing rhe central
lock switch again. When single
lock'function is activated,
the fuel filler flap actuator is not locked.
Double lock motor, also known as central arrest, is activat-
ed only when the vehicle is locked from the outside at the
driver's door lock with a key or when the GM receives a
lock request from the remote entry (FZV) system. In this
case the double lock motor is activated simultaneously
with the single lock motor. The function of the double loclc
motor is to mechanically offset an internal rod in the loclc
actuator, disabling it from unlocking the vehicle from the in-
terior. This prevents the doors from being unloclted by any
means except from an unlock request at the driver's door
or via the FZV remote key.
Lock cylinder safety
4 The driver's door loclc and the trunk loclc incorporate an over-
running loclc cylinder similar to the ignition lock. If any key
other than the vehicle key, or a tool such as a screwdriver or
dent-puller, is inserted into the cylinder, it will cause the cyl-
inder to freewheel or spin.

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1 Central Locking and Anti-Theft
NOJE-
A single unlock request from the driver's door with the FZV
key unlocks the driver's door only.
A second unlock request
unlocls the remaining doors and trunk. This feature can be
modified for individual users with the Key Memory capabil-
ities to activate all lock actuators simultaneously See Car
Memory
/ Key Memory later in this section.
Starting with 2000 models, the battery in the FZV ignition
Icey is recharged by the ignition switch ring antenna while
the ley is in the ignition switch.
Transmitter self-test (models to
1999)
Press buttons 1 and 2 at the same time. This starts ltey trans-
/ mitter self-test. Transmitter is OK when LED glows steadily
te{le"el for that particular key and illuminate an instrument
cluster message.
-- 502515092 J
NO JE-
If batteries are replaced within one minute of removal, it is
not necessary to
periorm initialization.
Tlie state of charge of key batteries has no effect on elec-
tronic immobilizer (EWS) function.
2
Remote key initialization
for one second. If LED fails to illuminate, try replacing ltey~
batteries.
The state of charge of key transmitter batteries is monitored
by the
GM. Once the voltage level of the transmitter drops be-
low
4.5volts, the LED no longersignals transmitteroperation.
Convenience opening, initialization and self-testing are no
lonaer ~ossible. The GM will store a fault indicatina low bat-
NOJE-
In the accompanying illustration, the key is from a 1998 mod-
el. 2000 and later models are equipped with a different look-
ing
/ - Up to four keys can be coded to operate the same system
Initialize all key transmitters at the same time.

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515-11
Central Lockinq and ~nti-l heft/
4 The initialization procedure is as follows:
Close ail doors and have all keys available
2 LED Using lkey number I, turn ignition switch to KL R (ACCES-
SORY), then switch off within 5 seconds and remove first
key.
. - -- , ..-.---- - Within 30 seconds of turning ignition switch to OFF, press
and hold button
2.
1 While holding button 2, press and release (tap) button 1
three times within 10 seconds. Models to 1999: LED flash-
- If acknowledgement signal (doors lock / unlocking) does not
follow initialization procedure, repeat process. If ignition is
switched on during process, procedure is cancelled.
50251509‘1
NOTE-
The Key Memory function of the GM responds to the ley
identification number of each key If the keys are not initial-
ized
in the same orderprior to initialization, the ley memory
functions activated by the
l(eys will not be assigned correctly.
Always initialize the keys
in the same order.
es momentarily.
Release both buttons. GM immediately locks and unlocits
doors to signal successful initialization.
Remote system coding
* Initialize remaining lteys, repeating steps above.
The E39 remote entry system uses coded signals for security
purposes. The code signal sent by the transmitter is changed
every time the vehicle is lockedlunlocked with the transmitter.
A separate code signal is used for each transmitter that is ini-
tialized to the system. This allows for each transmitterto oper-
ate independently of the others.
Due to the changing of the code each time the buttons are de-
pressed, the system allows for a
lacit of synchronization be-
tween the transmitter and receiver. This would occur
if the
buttons on the transmitter are pressed inadvertently.
Up to
100 erroneous actuations of the transmitter are auto-
matically corrected
forby the control module. If more than 100
actuations are present, the operator need only to press the
button a second time to restore system operation.

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51 5-12
I Central Locking and Anti-Theft
Key battery
9
4 1997 - 1999 models: Two lithium batteries are used to sup-
ply power to key transmitter. When replacement is neces-
sary, remove cover and two fasteners (arrows) from rear of
key to access batteries
NOTE-
If you replace the batteries within one minute, the FZV ley
will not require a new initialization procedure.
2000 and later models: FZV key battery is recharged by ring
antenna while ltey is in ignition switch. There is no need to re-
place ltey battery.
Car Memory 1 Key Memory
A number of features and functions can be customized to the
driver(s) preference. The identity of the vehicle user is provid-
ed by a
s~gnal from the keyless entry system (FZV).
Car Memory and Key Memory are actually two separate func-
tions, although they are marketed as a combined feature.
Car Memory
Pr'or ro new
veh c,e de very, the BMW scan roo (DISp us,
GTI or MOD C) is ~sed lo cooc ine driver preierences nro ine
appropriate control modules. Thereafter these choices can-
not be changed without
recoding with a BMW scan tool.
The functions that can be set using Car Memory include:
Alarm system (DWA) features such as armingldisarming
with
lkeyless entry (FZV), activation of tilt sensor or interior
sensor
lnterior light activation when central
locking is used
Convenience opening of
windows/sunroof
lnterior and external lighting preferences
Heating
I A/C preferences (IHKA)
Seat and mirror preferences (triggered by Key Memory)
Instrument cluster display units (for example: km vs. miles)

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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