2000 BMW 540I SEDAN engine

28n
RefuelingFuel filler door
Before refueling, shut the engine
off. If the engine is running, fuel
cannot be filled into the tank and the
Service Engine lamp may come on.<
To open the filler door, press on the
front edge.
To unlock the filler door if the central
locking system fails, refer to page 180.
When handling fuels, comply with
all of the applicable safety precau-
tions and regulations pertaining to
fuels.
Never carry spare fuel containers in
your vehicle. Whether empty or full,
these containers can leak, cause an ex-
plosion, or lead to fire in the event of a
collision.<
394de011
Simple and friendly to the
environment
Open the filler cap carefully to
prevent fuel from spraying out.
Fuel spray may cause injury.
Do not top off. Topping off may cause
fuel spillage.<
Keep the filler cap in the bracket
attached to the fuel filler door.
390de603
When refueling, insert the filler nozzle
completely into the filler pipe. Pulling
the nozzle out of the pipe during refuel-
ing
>results in premature pump shutoff
and
>will reduce the effect of the vapor
recovery system on the pump.
Close the fuel cap carefully after
refueling. A loose or missing cap
will activate the Service Engine lamp.<

29n
RepairsIndexOverview Controls Car care Technology Data
Fuel specifications Tire inflation pressureUse unleaded gasoline only.
Recommended octane rating: 91 AKI.
BMW engines are equipped with knock
sensors and will adapt automatically
to different octane ratings, provided
that the minimum octane requirement
(87 AKI) is met.
Fuels with higher octane ratings will
provide enhanced performance and
lower fuel consumption, while the use
of fuels with low octane ratings will
have an opposite effect.
Do not use leaded fuels. The use
of leaded fuels will cause perma-
nent damage to the system's oxygen
sensor and the catalytic converter.<
AKI = Anti Knock Index
The inflation pressures are indicated on
a sticker attached to the B-pillar behind
the driver's door (visible with door
open).Check tire pressuresAll pressure specifications are indicated
in psi (kilopascal) for tires at ambient
temperature (refer also to the next
pages).
For vehicles with Tire Pressure Control
(RDC)
*:
After a correction of the tire inflation
pressure, reactivate the system. Refer
to page 92.
390de351
Check tire inflation pressures reg-
ularly Ð at least every two weeks
and before beginning a longer trip.
Incorrect tire pressure can lead to tire
damage and accidents.
Check the inflation pressure of the
spare tire also. Inflate the spare tire to
the highest inflation of any tire on your
vehicle.<
Comply with tire approval
specificationsThe inflation pressures in the table
apply to tires from BMW approved
manufacturers. Your BMW center is
familiar with these pressures. Higher
pressures may be specified for tires
from other manufacturers. You will find
a list of approved tires beginning on
page 140.
Your vehicle is equipped with tires that
not only meet US standards, but also
European standards. We recommend
the exclusive use of BMW approved
tires.

32n
Locks and security systems:
Keys34
Electronic vehicle
immobilizer35
Central locking system36
Opening and closing
Ð from the outside36
With the key36
Opening and closing
Ð from the inside40
Luggage compartment lid/
Tailgate41
Luggage compartment44
Alarm system45
Electric power windows47
Sliding/Tilt sunroof48
Adjustments:
Seats50
Steering wheel54
Mirrors54
Seat, mirror and steering wheel
memory56
Car Memory, Key Memory58
Passenger safety systems:
Safety belts59
Airbags60
Child restraints64
Child seat security66
Child-safety locks66Driving:
Steering/Ignition lock67
Starting the engine68
Switching off the engine69
Parking brake69
Manual transmission70
Automatic transmission71
Automatic transmission with
Steptronic74
Indicator/Headlamp flasher77
Wiper/Washer system77
Rear window defroster79
Cruise control80
Everything under control:
Odometer, outside temperature
display82
Tachometer83
Energy control83
Fuel gauge83
Temperature gauge84
Service Interval Display84
Check Control85
Onboard computer88
Technology for safety and
convenience:
Park Distance Control (PDC)90
Automatic Stability Control plus
Traction (ASC+T)/Dynamic
Stability Control (DSC)91
Tire Pressure Control (RDC)92

35n
RepairsIndexOverview Controls Car care Technology Data
Electronic vehicle immobilizerThe key to security Your BMW is equipped with a passive
anti-theft system. This electronic immo-
bilization system is designed to reduce
the susceptibility of your vehicle to theft
by making it impossible to start the en-
gine using any means other than the
special keys furnished with the vehicle.
Your BMW center can cancel the elec-
tronic system authorization for individ-
ual keys (in the event of loss, for in-
stance). A deactivated key can no
longer be used to start the engine.463de042
How the electronics workAt the heart of this system is an elec-
tronic chip which is integrated into the
key. The lock mechanism itself is actu-
ally a dual-function device, simulta-
neously serving as a communications
interface designed to allow the security
system to maintain a continuous stream
of variable, vehicle-specific signals with
the electronic circuitry in the key. The
system will not release the ignition, fuel
injection and starter unless it recog-
nizes an "authorized" key.
Force applied to the key can dam-
age the integrated electronic cir-
cuitry. A damaged key can no longer be
used to start the engine.<

48n
Electric power windows Sliding/Tilt sunroof
*
Safety switchYou can use the safety switch to deacti-
vate the rear power window switches
(when children are riding in the rear
seats, for instance).
Press the safety switch whenever
children are riding in the rear of
the vehicle. Careless use of the power
windows can lead to injury.< 390de131
To prevent injuries, exercise care
when closing the sliding/tilt sun-
roof and keep it in your field of vision
until it is shut.
Before leaving the car, switch off the
electric sunroof mechanism by taking
out the ignition key. Do not leave chil-
dren unattended in the vehicle with ac-
cess to vehicle keys. Use of the key can
result in starting of the engine and oper-
ation of vehicle systems such as power
sunroof, etc. Unsupervised use of these
systems can result in serious personal
injury.<
You can avoid pressure or drafts in the
passenger compartment when the sun-
roof is open or lifted by opening the air
vents in the dashboard and increasing
the air supply as required. Refer to
pages 98, 101.
If the sunroof is completely open, air
disturbances may be caused in the ve-
hicle when you are driving at higher
speeds. Close the roof as far as is nec-
essary until this natural phenomenon
ceases.
For the convenience mode via the door
lock or the remote control, refer to
page 36 or 37.
Lifting Ð opening Ð closingFrom ignition key position 1, press the
switch or slide it to the desired direction
until you feel resistance.
When lifting, the headliner retracts
several inches.
After the ignition has been switched off,
you can still operate the sliding/tilt sun-
roof as long as neither of the front doors
has been opened.Automatic
* opening and closing
Press the appropriate end of the control
switch past the resistance point and
then release it. 390de636

67n
RepairsIndexOverview Controls Car care Technology Data
0 Steering lock engagedThis is the only position in which the
ignition key can be inserted and
removed.
After removing the key, turn the steer-
ing wheel slightly to the left or right until
you hear the lock engage.
An acoustic warning sounds when you
fail to remove the ignition key after
opening the driver's door.
Vehicles with automatic transmission:
Do not move the selector lever from
position "P" until the engine is running
(ignition key position 2).
Your vehicle is equipped with an inter-
lock. Therefore, the ignition key cannot
be turned to position 0 and removed
until the selector lever is in position "P"
(Interlock).390de010
1 Steering lock disengagedYou will find that it is often easier to turn
the ignition key from position 0 to posi-
tion 1 when you move the steering
wheel slightly to help disengage the
lock.2 Ignition onAll electrical equipment and accesso-
ries are available for use.3 Starting the engine
Vehicles with manual transmis-
sion:
Step on the clutch when starting the
vehicle. If you do not, a lock prevents
the engine from starting.<
Steering/Ignition lock

68n
Starting the engineBefore starting>Engage the parking brake
>Be sure that the transmission selector
is in "Neutral" (or "Park" if the vehicle
is equipped with an automatic trans-
mission)
>Step on the clutch pedal.
Do not allow the engine to run in
enclosed spaces. The exhaust
gases contain carbon monoxide, an
odorless and colorless, but highly toxic
gas. Breathing the exhaust gases poses
an extreme health risk, and can lead to
unconsciousness and death.
Never leave the car unattended with the
engine running. An unattended vehicle
with a running engine represents a po-
tential safety hazard.<
Starting the engine>Start the engine. Do not press the
accelerator pedal.
BMW 528i, BMW 540i with man-
ual transmission:
Do not actuate the starter for too short
a time. Do not turn it for more than ap-
prox. 20 seconds. Release the ignition
key immediately as soon as the engine
starts.
Do not allow the engine to warm up by
leaving it running while the vehicle re-
mains stationary. Instead, begin driving
immediately at a moderate engine
speed.
BMW 540i with automatic transmission:
Your BMW is equipped with the conve-
nience starting feature. Simply turn the
key to position 3 (starter) and then re-
lease it immediately.
The starter continues to operate auto-
matically.
The automatic starting mode will not
operate if the battery voltage is low.
Should this condition arise, it remains
possible to jump-start the engine (refer
to page 182).<
Should the engine fail to start on the
first attempt (if it is very hot or cold, for
instance):
>Press the accelerator pedal halfway
down while engaging the starter.
Cold starts at extremely low tempera-
tures, from approx. +57 (Ð156)
and at elevations above 3,300 feet
(1,000 meters):
>It may be necessary to allow the
starter to remain engaged somewhat
longer than under normal operating
conditions (approx. 10 seconds)
>Press the accelerator pedal halfway
down while engaging the starter.
Engine idle speed is controlled by the
engine computer system. Increased
speeds at startup are normal and
should decrease as the engine warms
up. If engine speed does not decrease,
service is required.
To prevent the battery from discharg-
ing, always deactivate electrical de-
vices which are not in use. Switch the
ignition off when the vehicle is not
being driven.

69n
RepairsIndexOverview Controls Car care Technology Data
Switching off the engine Parking brakeTurn the ignition key to position 1 or 0.
Never remove the ignition key
while the vehicle is rolling. The
steering locks, making it impossible to
steer the vehicle.
Always remove the ignition key and en-
gage the steering lock before leaving
the vehicle.
Vehicles with manual transmission:
Always engage the parking brake when
parking on slopes and inclined sur-
faces, since placing the lever in 1st gear
or reverse may not provide adequate
resistance to rolling.
Vehicles with automatic transmission:
Place the selector lever in "Park."<
Vehicles with automatic transmission
*:
The vehicle must be stationary and the
selector lever in "Park" before you can
remove the ignition key.
To engageThe lever engages automatically and
the "PARK BRAKE" or "BRAKE" (in
Canada "P") indicator lamp comes on in
the instrument cluster in ignition key
position 2. Refer to pages 22 and 23.To releasePull up slightly on the lever, press the
button and lower the lever.
The parking brake is primarily designed
to prevent the vehicle from rolling while
parked. It operates against the rear
wheels.390de042
If, in exceptional circumstances, it
should be necessary to engage
the parking brake while the vehicle is in
motion, do not pull it with excessive
pressure. Keep your thumb pressed
against the release button while care-
fully pulling up the lever to apply mod-
erate pressure.
Excessive pressure can lead to over-
braking and loss of traction (fishtailing)
at the rear.
The brake lamps do not come on when
the parking brake is applied.
Vehicles with manual transmission:
Always engage the parking brake when
parking on slopes and inclined sur-
faces, since placing the lever in 1st gear
or reverse may not provide adequate
resistance to rolling.
Vehicles with automatic transmission:
Place the selector lever in "Park."<
To avoid corrosion, apply the parking
brake lightly from time to time when
coasting to a standstill (at a traffic sig-
nal, for instance), provided that it is safe
to do so.