2000 BMW 540I SEDAN airbag

61n
RepairsIndexOverview Controls Car care Technology Data
AirbagsIndicator lamp
The indicator lamp displays the
operational status of the airbag
system in ignition key posi-
tions 1 and 2.
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.
A system malfunction could prevent the
system from responding to an impact
occurring within its normal response
range.
Please have your authorized BMW cen-
ter inspect and repair the system as
soon as possible.
Sitting correctly with airbags
For your safety, comply with the
following instructions for the air-
bags. If you do not, the airbags may not
be able to provide their maximum pro-
tection. All passengers in the vehicle
should be aware of and comply with
this information:
The airbags are supplemental restraint
devices designed to provide extra pro-
tection; they are not a substitute for
safety belts. Wear your safety belt at all
times. The airbags will not be triggered
in the event of a minor accident, a vehi-
cle roll-over, or collisions from the rear.
In these instances, the safety belt pro-
vides optimal protection.
Airbags are located under cover panels
in the steering wheel, in the dashboard,
in the side trim panels in the front and
rear*, and in the windshield pillars and
the sides of the headliner.
Adjust your seat to a position that pro-
vides maximum distance between you
and the steering wheel, the instrument
panel and the door while still allowing
comfortable and safe access to all
vehicle controls.
To avoid sustaining hand and arm inju-
ries: Always grasp the steering wheel
on the rim with the hands at the 9 and
3 o'clock positions: Do not place your
hands on the center pad.
Never allow any objects to obstruct the
area between the airbag and an occu-
pant.
Do not use the cover panel above the
passenger-side airbag as a storage
area.
Do not apply adhesive materials to the
cover panels of the airbags, cover them
or modify them in any other way.
Do not install a rear-facing child re-
straint system in the front passenger
seat of this car.
Children under 13 years of age and
children less than 5 feet (150 cm) tall
should ride only in the rear seat.
Infants or small children should never
be held on the lap of a passenger.
If your car is equipped with side airbags
in the rear passenger area, be sure that
child restraints are mounted correctly
and provided with the greatest-possible
distance between the airbags in the
side trim panels. Do not allow children
to lean out of the child's seat in the di-
rection of the side trim panels. If they
do so, serious injuries can occur if the
airbag is triggered.<

62n
AirbagsAt all times, occupants should sit
upright and be properly restrained (in-
fants and small children in appropriate
child restraint systems; larger children
and adults using the safety belts). Never
let an occupant's head rest near or on a
side airbag because the inflating airbag
could cause a serious or fatal injury.
Please note that the word "Airbag" im-
printed on the door trim panel indicates
the airbag's location.
Accident research shows that the
safest place for children in an automo-
bile is in the rear seat. However, a child
sitting in the rear seat and not properly
restrained may place his or her head on
or near the side airbag, if so equipped.
For example, a child Ð even though
belted Ð may fall asleep with his or her
head against the side airbag. It may be
difficult for a driver to ensure that chil-
dren in the rear seat will remain prop-
erly positioned at all times and not
place their heads on or near the side
airbag.Therefore, we recommend that the rear
seat side airbags, if provided, be deac-
tivated if you plan to transport children
in the rear seat.
The rear seat side airbags may already
have been deactivated, either at the
time of manufacture or by a BMW cen-
ter. Labels in the rear door opening
should indicate the status of your rear
seat side airbags. If your are uncertain
of their status, or wish to have the air-
bags activated or deactivated, please
contact your BMW center.Even when all these guidelines are
followed, there is still a small residual
risk of injuries to the face, hands and
arms occurring from airbag deploy-
ment in isolated instances. The ignition
and inflation noise may provoke a mild
temporary hearing loss in extremely
sensitive individuals.
Airbag warning information is also
provided on the sun visors.
For additional information concerning
the airbag system, refer to pages 160
and 188.

63n
RepairsIndexOverview Controls Car care Technology Data
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

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RepairsIndexOverview Controls Car care Technology Data
Child restraints
*
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 car.
Your car is equipped with an airbag
supplemental restraint system for the
front passenger. Because the backrest
on any rear-facing child restraint sys-
tem (of the kind designed for infants un-
der 1 year and 20 Ibs./9 kg) would be
within the airbag's deployment range,
you should never mount such a device
in the front passenger seat, since the
impact of the airbag against the child
restraint's backrest could lead to seri-
ous or fatal injuries.
If it is necessary for a child (not an in-
fant) to ride in the front seat, certain
precautions should be taken. First,
move the passenger seat as far away
from the dashboard as possible. This
important precaution is intended to
maximize the distance between the air-
bag and the child. Older children should
be tightly secured with a safety belt.
Younger children should be secured in
an appropriate forward-facing child re-
straint system that has first been prop-
erly secured with a safety belt. Never
install a rear-facing child restraint sys-
tem in the front passenger seat.
We strongly urge you to carefully read
and comply with the instructions for in-
stallation and use provided by the child
restraint's manufacturer whenever you
use such a device.
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.

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
123n
RepairsIndexOverview Controls Car care Technology Data
Under the hood:
Hood143
Engine compartment144
Washer fluids148
Washer nozzles148
Engine oil149
Coolant151
Brake fluid152
Vehicle Identification
Number153
Care and maintenance:
The BMW Maintenance
System154
Caring for your car155
Airbags160
Vehicle storage160
Laws and regulations:
Technical modifications161
OBD connector162 Special operating instructions:
Break-in procedure124
Driving notes125
Catalytic converter126
Antilock Brake System
(ABS)127
Disc brakes128
Brake system130
Winter operation130
Power steering132
Level control system132
Cellular phone133
Radio reception133
Wheels and tires:
Tire inflation pressure134
Tire condition134
Tire replacement135
Tire rotation136
Wheel and tire
combinations137
Winter tires138
Snow chains139
Approved wheel and tire
specifications140

160n
Airbags Vehicle storage 1 Front airbags for driver and
passenger
2 Side impact Head Protection System
(front)
3 Side airbags (front and rear
*)
Important safety notices
Do not attempt to remove the gas
generators of the airbag restraint
system from the vehicle. Have testing
and service procedures performed by
specially-qualified technicians only. In
the event of a malfunction, deactivation,
or triggered actuation (as a response to
an accident) of the airbag restraint sys-
tem, consult your authorized BMW cen-
ter for repairs or service operations.
380de647
Modifications may not be made on ei-
ther the wiring or the individual compo-
nents in the airbag system. These in-
clude the padded steering wheel hub,
the instrument panel, the side trim pan-
els of the front or rear doors and the
roof pillars or the sides of the headliner.
Never apply adhesive materials to these
components or cover or modify them in
any way. Do not attempt to remove or
dismantle the steering wheel.
To ensure compliance with official
safety regulations, entrust disposal of
airbag generators to an authorized
BMW center.
Unprofessional attempts to service the
system could lead to failure in an emer-
gency or undesired airbag activation,
either of which could result in personal
injury.< Consult your BMW center regarding the
required special procedures if you in-
tend to store the vehicle for longer than
three months.

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
187n
RepairsIndexOverview Controls Car care Technology Data
Airbags188
Adaptive Transmission Control
(ATC)188
Automatic Stability Control plus
Traction (ASC+T)/Dynamic
Stability Control (DSC)189
Radio reception190
BMW active seat190
Safety belt tensioner191
DSP sound system191
Interior rearview mirror with
automatic dimmer192
Rain sensor193
Tire Pressure Control (RDC)194
Integrated rear suspension194
Level control system195
Xenon lamps195

188n
Deceleration sensors continuously
monitor the physical forces acting upon
the vehicle. If, as the result of a frontal
collision, vehicle deceleration is
reached at which the protection of the
safety belts alone is no longer ade-
quate, the gas generators of the driver-
side and passenger-side airbags are ig-
nited simultaneously. However, the
passenger-side airbag is only triggered
if an additional sensor has recognized
that the passenger seat is occupied.
In the event of a side collision, the head
protection and side airbags in the front
and rear
* are triggered if necessary.
390de319
The airbags located under the marked
covers inflate and unfold in a matter of a
few milliseconds. In this process they
tear through the rated breaking points
of the upholstered covers or press them
out.
Because the inflation process must be
virtually instantaneous, it is necessarily
accompanied by a certain amount of
ignition and inflation noise. The gas
which the system employs to inflate the
airbag is not dangerous. Smoke
appears as the gas dissipates.
The entire process is completed within
fractions of a second.On vehicles with automatic transmis-
sion, Adaptive Transmission Control
(ATC) uses a number of factors to cal-
culate the gear which provides the
maximum efficiency. In this process it
monitors your personal driving style, the
situation in which you are driving, the
condition of the road and the traffic
conditions.
ATC recognizes your personal driving
style from the positions and movements
of the accelerator pedal, deceleration
when braking and lateral acceleration
through curves. Four different shift
characteristics Ð from comfort-oriented
to performance-oriented Ð are available
for selection by ATC.
390de334
ATC
Airbags ATC
*