BMW 540I SEDAN 2003 Repair Manual

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OverviewControlsMaintenanceRepairsDataIndex
AirbagsThis is the right way for a child to sit in a
child restraint when rear side airbags
(arrow) are provided.380de637
This is the right way for a larger child to
sit wearing the safety belt when rear
side airbags (arrow) are provided.380de638
Indicator lamp
The indicator lamp indicates the
operational status of the airbag
system from ignition key posi-
tion 1.
System operational:
>The indicator lamp comes on briefly
then goes out.
System malfunction:
>The indicator lamp fails to come on
>The indicator lamp comes on briefly
before going out and then lighting up
again.
Please respond to any malfunctions in
the system by immediately having it
inspected at your BMW center; other-
wise the airbag could fail to respond to
an accident in which both the angle and
the severity of the impact would nor-
mally trigger airbag deployment.

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Transporting children safelyCommercially-available child-restraint
systems are designed to be secured
with a lap belt or with the lap belt por-
tion of a combination lap/shoulder belt.
Improperly or inadequately installed
restraint systems can increase the risk
of injury to children. Always read and
follow the instructions that come with
the system.
Child-restraint system with tether
strap If you use a child-restraint system with
a tether strap, three additional tether
anchorage points have been provided Ð
refer to the arrows in the illustrations.
Depending on the location selected for
seating in the rear passenger area,
attach the tether strap to the corre-
sponding anchorage point to secure the
child-restraint system, as shown in the
following illustrations. 380us123
sport wagon:
To gain access to each anchor fitting lift
the plastic plug (arrows) with the help of
a screwdriver.392au001

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OverviewControlsMaintenanceRepairsDataIndex
Transporting children safelyThe anchor fittings of the sedan are
shown in the illustration above.
The one in the next column shows the
sport wagon.
394au00
Each seating position is fitted with a
head restraint. Lift the head restraint
and pass the tether strap between the
head restraint and the seat back. It is
recommended to readjust the head
restraint into the lowest possible posi-
tion.
Adjust the tether strap according to the
child-restraint manufacturer's instruc-
tions.392au003
Before installing any child-
restraint device or child seat,
please read the following:
Never install a rear-facing child-
restraint system in the front passenger
seat of this vehicle.
Your vehicle is equipped with an airbag
supplemental restraint system for the
front passenger. Because the backrest
on any rear-facing child-restraint
system (of the kind designed for infants
under 1 year and 20 Ibs./9 kg) would be
within the airbag's deployment range,
you should never mount such a system
in the front passenger seat, since the
impact of the airbag against the child-
restraint's backrest could lead to
serious or fatal injuries. If it is necessary
for a child (not an infant) to ride in the
front seat, certain precautions should
be taken. First, move the passenger
seat as far away from the instrument
panel as possible. This important pre-
caution is intended to maximize the dis-
tance between the airbag and the child.

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Transporting children safelyOlder children should be tightly secured
with a safety belt, after they have out-
grown a booster seat that is appro-
priate for their age, height and weight.
Younger children should be secured in
an appropriate forward-facing child-
restraint system that has first been
properly secured with a safety belt.
Never install a rearward-facing child-
restraint system in the front passenger
seat.
We strongly urge you to carefully read
and comply with the instructions for
installation and use provided by the
child-restraint's manufacturer whenever
you use such a system.
Be sure that all occupants (of all ages)
remain properly and securely restrained
at all times.<
All rear seating positions in your
vehicle meet the recommendations
of SAE J1819, an industry-recom-
mended practice for securing child-
restraint systems in motor vehicles.
Child-restraint installationAll of the rear belt retractors and the
front passenger's safety belt can be
locked for mounting and securing child-
restraint systems.
Information regarding this is located
near the buckle latch of each safety
belt.365us146
Lock the safety beltPull the entire length of the belt from
the belt retractor. Allow the reel to
retract the belt somewhat and engage
the buckle, then tighten the belt against
the child-restraint system. The retrac-
tion mechanism is now locked.Unlock the safety beltRelease the buckle, remove the child-
restraint device and allow the belt
retractor to reel the belt completely in.

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OverviewControlsMaintenanceRepairsDataIndex
Transporting children safelyLATCH child-restraint anchorage
points
* Ð sedan
LATCH: Lower Anchor and Tethers for
CHildren.
Snap the rear center lap belt into the
buckle with the word CENTER and then
pull the belt away from the area where
the child restraint will be mounted.
Vehicles with through-loading
system
*: use the small buckle to
connect the two sections of the belt,
refer to page 121.<
390de786
The rear outer seating positions are
provided with anchors for a LATCH
child-restraint system. The illustrations
show the right rear seat as an example.
The outer anchorage points for the
LATCH child-restraint system are
marked with small flags.394us750
Canadian models only:
The anchorage points for the LATCH
child-restraint system are marked with
buttons.
To attach the LATCH child-
restraint system, your BMW
center will provide an installation guide.
The guide, although not necessary for
installation of a LATCH child-restraint
system, will facilitate the installation
and also help protect the vehicle's
seating surfaces. Carefully read and
comply with the safety precautions of
the manufacturer.<394us749

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Transporting children safelyLATCH child-restraint anchorage
points
* Ð sport wagon
LATCH: Lower Anchor and Tethers for
CHildren.
The rear outer seating positions are
provided with anchors for a LATCH
child-restraint system. The illustration
shows the left rear seat as an example.
Canadian models only:
The anchorage points for the LATCH
child-restraint system are marked with
buttons, refer to illustration.
Always follow all manufacturer's
instructions and observe all safety
precautions when installing the LATCH
child-restraint system.<392us751
Child-safety locksInsert the key to the slot of a rear door
lock and turn it outward:
The door can now be opened from the
outside only.390de698

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OverviewControlsMaintenanceRepairsDataIndex
Vehicle Memory, Key MemoryHow the system functionsNo doubt you have reflected at one
time or another on how great it would
be if you could permanently configure
your vehicle's various features and
adjustments to mirror your own indi-
vidual preferences. In engineering your
vehicle, BMW has incorporated a
number of options for personal adjust-
ment that can be programmed into your
vehicle at your BMW center.
The available configuration data fall into
two categories, according to whether
their primary orientation is the vehicle
("Vehicle Memory") or the individual
("Key Memory"). Provided that each
person has a separate remote-control
key, you can have your BMW center
enter two personal adjustments for two
different individuals into the system.463de029
The system then relies on a bilateral
data exchange to identify the individual
user and dial in the selected settings
whenever the remote control unit is
used to disengage the door locks.
In order for you to distinguish between
different keys, colored decals are sup-
plied together with the keys.What the system can doYour BMW center can provide you with
details on the capabilities of the Vehicle
Memory and Key Memory systems. A
few examples follow below:
Examples for Vehicle Memory:
>Various signals as acknowledgment
when locking or unlocking your
vehicle
>Activates/deactivates the "Follow me
home" function.Examples for Key Memory:
>Locks the vehicle when you start off
>Automatically adjusts the driverÕs
seat, the exterior mirrors and the
steering wheel position to your per-
sonal programmed settings when you
unlock the vehicle
>The automatic climate control
assumes your preset comfort settings
when you unlock the vehicle.
You will see this symbol through-
out the Owner's Manual. It is to
remind you at appropriate places of the
settings that are available to you.<

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0 Steering locked
1 Steering unlocked
2 Ignition switched on
3 Starting engine
Steering locked The key can be inserted or removed in
this position only.
After removing the key, turn the
steering wheel slightly to the left or right
until the lock engages.
An acoustic warning is sounded when
you fail to remove the ignition key after
opening the driver's door. 390de010
Vehicles with automatic transmis-
sion:
Do not move the selector lever from the
"Park" position until the engine is run-
ning (ignition key in position 2).
To turn the key back to position 0 (for
instance, prior to removal), start by
moving the selector lever to position P
(Interlock).<
Steering unlocked You 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.
Individual electrical accessories are
ready for operation.Starting engine
Vehicles with manual transmis-
sion: depress the clutch when
starting the engine. A lockout prevents
the engine from starting with the clutch
engaged.<
Before starting>Engage the parking brake
>Be sure that the gearshift lever is in
"Neutral" or the selector lever in
"Park" if the vehicle is equipped with
an automatic transmission
>Depress 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 vehicle unattended
with the engine running. An unattended
vehicle with a running engine repre-
sents a potential safety hazard.<
Steering/Ignition lock Starting the engine

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Starting the engineStarting the engineDo not press the accelerator pedal
while starting the engine.
While it is important not to release
the key prematurely, you should
also avoid allowing the starter to
operate continuously for more than
20 seconds at a time. Release the igni-
tion key immediately as soon as the
engine starts.
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
release it immediately.
The starter continues to operate auto-
matically and will be deactivated as
soon as the engine starts.
The automatic starting mode will not
operate if the battery voltage is low.
The engine can be jump-started using
an external power source (refer to
page 164).<
Do not allow the engine to warm up
by leaving it running while the vehicle
remains stationary. Instead, begin to
drive immediately at a moderate engine
speed.
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 of roughly +5 7 (Ð15 6) or below
and at altitudes of over 3,300 ft
(1,000 m):
>Allow the starter to turn somewhat
longer (approx. 10 seconds) during
your initial starting attempt.
Engine idle speed is controlled by the
engine-management system. Higher
idle 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 discharging,
always deactivate electrical devices
that are not in use. Switch the ignition
off when the vehicle is not being driven.Extended starting attempts, char-
acterized by excessively frequent
or long periods with the starter
engaged, can lead to damage of the
catalytic converter.<
When driving, standing at idle,
and parking the vehicle, take care
to avoid contact between the exhaust
system and flammable materials (grass,
hay, leaves, etc.). Such contact could
lead to a fire, resulting in serious per-
sonal injury and property damage.<

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Switching off the engine Parking brakeTurn the ignition key to position 1 or 0.
Do not 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
engage the steering lock before leaving
the vehicle.
Vehicles with manual transmission:
Always engage the parking brake
when parking on hills and inclined sur-
faces, as first 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.
The parking brake is primarily designed
to prevent the vehicle from rolling while
parked. It operates on the rear wheels.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 19 and 20.To releasePull up slightly on the lever, press the
button and lower the lever.390de714
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 hills and inclined sur-
faces, as first gear or reverse may not
provide adequate resistance to rolling.
Vehicles with automatic transmission:
Place the selector lever in "Park."<
You can help prevent corrosion and
avoid uneven braking response by
gently engaging the parking brake from
time to time when coasting to a stop at
traffic lights (ensure that you will not
pose a hazard to other road users).