2008 BMW X3 3.0SI light

Reference
At a glance
Controls
Driving tips
Mobility
53
Activating HDC
Press the button; the LED lights up.
The LED flashes when the brakes are applied
automatically.
Deactivating HDC
Press the button again; the LED goes out.
HDC is deactivated immediately above approx.
35 mph/60 km/h and after approx. 10 seconds
when the ignition is switched off.
Using HDC
Manual transmission:
Use HDC in low gears and in reverse.
Automatic transmission:
You can use HDC in every drive position.
Malfunction
If the LED in the button goes out in the HDC
mode or fails to light up when the button is
pressed:
HDC is temporarily not available, because the
brake temperature is too high.
Malfunction in vehicle stability control
systems
The warning lamp lights up yellow.
The brake assistant is malfunctioning.
Have the system checked as soon as
possible.
Display of the previously described mal-
function on Canadian models.
If one of the malfunctions described
below occurs, drive with restraint and
caution and avoid full braking; otherwise, acci-dents can occur. When driving on poor road
surfaces, avoid full throttle or kickdown position
of the accelerator pedal as these could cause
damage to the drive system.<
The warning lamp for the brake system
lights up in red, together with the warn-
ing lamps for ABS and DSC/xDrive. In
addition, a warning signal sounds.
The driving stability control systems
have failed. It is then possible to exert
driving force only via the rear axle.
If the brake system warning lamp lights
up in yellow in the described combination, then
the EBV Electronic brake-force distribution is
still available. Have the system checked as soon
as possible.
Display of the previously described mal-
function on Canadian models.
The warning lamp lights up continu-
ously and a warning signal sounds:
Both DSC and DTC or the xDrive all-
wheel drive system have failed.
The stabilizing interventions of DSC or the all-
wheel drive system xDrive are no longer avail-
able. It is then possible to exert driving force
only via the rear axle. Have the system checked
as soon as possible.
Acceleration assistant
The acceleration assistant allows you to conve-
niently start off on inclines. You do not have to
use the handbrake.
1.Hold the vehicle with the brake pedal.
2.Step off the brake and immediately start off
with no trouble.
The acceleration assistant holds the vehi-
cle for approx. 2 seconds after the brake
is released. Depending on the load or when
towing a trailer, it is also possible for the vehicle
to roll backward slightly during this interval.

Technology for comfort, convenience and safety
54 After releasing the brake, start driving immedi-
ately; otherwise, the acceleration assistant will
no longer hold the vehicle after approx. 2 sec-
onds and the vehicle will start to roll back-
ward.<
Malfunction
The warning lamp for the brake system
lights up in yellow. The acceleration
assistant has failed. The vehicle will not
be held after the brake is released. Have the
system checked as soon as possible.
Flat Tire Monitor FTM*
The concept
The Flat Tire Monitor keeps track of the infla-
tion pressures in the four mounted tires as you
drive. The system triggers an alert whenever
the inflation pressure in one tire drops signifi-
cantly in relation to the pressure in another tire.
When a loss of pressure occurs, the rolling
radius changes and with it, the rotational speed
of the wheels. This change is detected and sig-
naled as a flat tire.
Functional requirement
To ensure the reliable signaling of a flat tire, the
system must be initialized at the correct tire
inflation pressure.
The initialization must be carried out after
each correction of the tire inflation pres-
sure and after every tire or wheel change.<
System limits
The Flat Tire Monitor cannot predict sud-
den severe tire damage caused by out-
side factors and does not detect a natural, even
pressure drop in all four tires.<
In the following situations, the system could be
delayed or malfunction:
>When the system has not been initialized
>When driving on snow-covered or slippery
road surfaces>Sporty driving style: slip in the drive wheels,
high lateral acceleration
>When driving with snow chains
*
When driving with a compact wheel, the Flat
Tire Monitor cannot operate.
Initializing system
The initialization is completed while driv-
ing and can be interrupted at any time.
The initialization automatically continues when
driving resumes.
Do not initialize the system when driving with
snow chains
* or with a compact wheel.<
1.Start the engine just before driving, but do
not begin to drive.
2.Press the button for at least 4 seconds, but
not longer than 2 minutes. After the button
is released, the indicator lamp in the instru-
ment cluster lights up yellow for a few sec-
onds.
3.Begin driving.
The initialization is completed while driving,
without requiring any further input from you.
Indication of a flat tire
The warning lamp lights up red. In addi-
tion, an acoustic signal sounds. There is
a flat tire or extensive inflation pressure
loss.
1.Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.
2.Identify damaged tire.
If identification is not possible, con-
tact your BMW Sports Activity Vehi-
cle Center.<

Reference
At a glance
Controls
Driving tips
Mobility
55
3.Replace the damaged wheel, refer to
Wheel changes on page111.
Malfunction
The warning lamp lights up yellow. The
Flat Tire Monitor is malfunctioning or
out of order. Have the system checked
as soon as possible.
TPM Tire Pressure Monitor*
The concept
TPM controls the tire inflation pressure in the
four mounted wheels. The system notifies you
if the tire inflation pressure has fallen signifi-
cantly in one or more tires.
Functional requirement
To ensure the reliable signaling of a flat tire, the
system must be reset at the correct tire inflation
pressure.
Always use wheels equipped with TPM elec-
tronics, including a metal valve; otherwise, there
is no guarantee that the system will function
properly.
The system must be reset after every cor-
rection of tire inflation pressure and after
every tire or wheel change.<
System limits
TPM cannot warn you of sudden, serious
tire damage due to external factors.<
The system does not function properly if it has
not been reset, e.g. it may identify a tire as flat in
spite of the fact that the tire is filled to the cor-
rect inflation pressure.
The system is deactivated and is unable to
detect flat tires if a wheel not equipped with
TPM electronics has been mounted, e.g. a
compact wheel, or if TPM is experiencing tem-
porary interference from other systems or
devices that use the same frequency.
Resetting system
The system must be reset after every cor-
rection of tire inflation pressure and after
every tire or wheel change.<
1.Start engine, but do not begin to drive.
2.Press the button until the yellow warning
lamp in the instrument cluster lights up for a
few seconds.
3.Begin driving.
After a few minutes of driving, the tire infla-
tion pressures in the tires are adopted as
the desired values to be monitored. The
resetting is completed during driving and
can be interrupted at any time without
requiring any input from you. The resetting
automatically continues when driving
resumes.
Low tire pressure message
The warning lamp lights up yellow. In
addition, a signal sounds. You have a
flat tire or a significant loss of tire pres-
sure in one or more tires.
1.Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.
2.Identify the damaged wheel or wheels.
If identification is not possible, con-
tact your BMW Sports Activity Vehi-
cle Center.<
3.Replace the damaged wheel, refer to
Wheel changes on page111.
4.Check tire inflation pressure and correct as
needed.

Technology for comfort, convenience and safety
56 The compact wheel is not equipped with the
required TPM electronics and is not monitored
when mounted.
When driving with the compact wheel, the sys-
tem indicates a malfunction.
Have the damaged tire replaced by your BMW
Sports Activity Vehicle Center or a workshop
that is familiar with TPM and works in accor-
dance with BMW repair procedures, using
appropriately trained personnel.
Malfunction
The yellow warning lamp flashes and
then lights up continuously. Flat tires
cannot be detected.
Such a message is displayed in the following
situations:
>When a malfunction is occurring:
Have the system checked
>When a wheel without TPM electronics is
mounted, e.g. a compact wheel
>When TPM is experiencing temporary inter-
ference from other systems or devices that
use the same frequency
NHTSA/FMVSS-required explanation
of 138 Tire Pressure Monitoring
System
Each tire, including the spare, should be
checked monthly when cold and inflated to the
inflation pressure recommended by the vehicle
manufacturer on the vehicle placard or tire infla-
tion pressure label. If your vehicle has tires of a
different size than the size indicated on the
vehicle placard or tire inflation pressure label,
then you should determine the proper tire infla-
tion pressure for those tires. As an added safety
feature, your vehicle has been equipped with a
tire pressure monitoring system, TPMS, that
illuminates a low tire pressure warning lamp
when one or more of your tires are significantly
under-inflated. When the low tire pressure
warning lamp lights up, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a signif-
icantly underinflated tire causes the tire to over-
heat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability. Please note that the TPMS is not a
substitute for proper tire maintenance, and it is
the driver's responsibility to maintain correct
tire pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure warning lamp.
The TPMS malfunction indicator is combined
with the low tire pressure warning lamp. When
the system detects a malfunction, the warning
lamp will flash for approximately one minute and
then remain continuously illuminated. This
sequence will continue upon subsequent vehi-
cle startups as long as the malfunction exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunc-
tions may occur for a variety of reasons, includ-
ing the installation of replacement or alternate
tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check
the TPMS malfunction warning lamp after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or alter-
nate tires and wheels allow the TPMS to con-
tinue to function properly.Brake force display
The brake lamps light up in two stages,
depending on how heavily you apply the brakes.
>Normal braking
The brake lamps and the center brake lamp
light up.
>Heavy braking
The rear fog lamps light up as well.

Reference
At a glance
Controls
Driving tips
Mobility
57
Airbags
The following airbags are located beneath the
marked covers:
1Front airbags
2Head airbags
3Side airbags in front and rear
*
Protective action
To ensure that the safety systems con-
tinue to provide optimum protection,
please follow the instructions on page27.<
The front airbags help protect the driver and
front passenger by responding to frontal
impacts in which safety belts alone cannot pro-
vide adequate restraint. When needed, the
head and side airbags help provide protection in
the event of side impact. The relevant side air-
bag cushions the side upper body area. The
respective head airbag cushions the head.
The airbags are intentionally not triggered in
every collision situation, e.g. they are not trig-
gered not in less serious accidents, or rear-end
collisions.
Do not apply adhesive materials to the
cover panels of the airbags, cover them or
modify them in any other way.
Do not attempt to remove the airbag retention
system from the vehicle. Do not modify the indi-
vidual components of the system or its wiring in
any way. This includes the padded covers in the
center of the steering wheel, on the dashboard,
the doors, and the roof pillars as well as the
sides of the headliner. Do not attempt to
remove or dismantle the steering wheel.
Do not touch the individual components
directly after the system has been triggered, because there is a danger of burns.
In the event of malfunctions, deactivation, or
triggering of the airbag restraint system, have
the testing, repair, removal, and disposal of air-
bag generators executed only by a BMW Sports
Activity Vehicle Center or a workshop that
works according to BMW repair procedures
with correspondingly trained personnel and
that has the required explosives licenses. Oth-
erwise, unprofessional attempts to service the
system could lead to failure in an emergency or
undesired airbag activation, either of which
could result in personal injury.<
Airbag warnings and information are also pro-
vided on the sun visors.
Automatic deactivation of front
passenger airbags
By evaluating the pressure on the seat cushion
of the front passenger seat, the system detects
whether or not the seat is occupied. Depending
on the detection result, the system correspond-
ingly activates or deactivates the front and side
airbags for the passenger.
The indicator lamp located above the
inside rearview mirror indicates whether
the front passenger airbag system is currently
deactivated or activated, refer to Status of pas-
senger airbag in the section below.<
Before transporting a child in the front
passenger seat, read the safety notices
and follow the safety instructions under Trans-
porting children safely on page35.
When teenagers or adults assume certain sit-
ting positions, the front and side airbags on the
passenger side can deactivate; this causes the
indicator lamp for the front passenger airbag to
light up. If this happens, have them change their
sitting position so that the passenger airbag is
activated and the indicator lamp goes out. If the
desired status cannot be achieved by changing
their sitting position, then have the person ride
in the back. Do not attach seat covers, seat
cushion padding, ball mats or other items to the
passenger seat unless they are specifically rec-
ommended by BMW. Do not place any items
under the seat which could press against the

Technology for comfort, convenience and safety
58 seat from below. Otherwise, a correct analysis
of the seat cushion is not ensured.<
Status of passenger airbags
The indicator lamp for the passenger airbag
indicates the functional status of the front and
side airbag on the passenger side depending on
whether or not the seat is occupied. By lighting
up, the indicator lamp indicates that the pas-
senger airbags deactivated.
>The indicator lamp lights up when a child
sitting as directed in a child restraint system
designed for this is detected.
The front and side airbags on the passenger
side are deactivated.
Most child seats are detected by the
system. It is particularly advisable to
use the child seats approved by NHTSA at
the time the vehicle was produced. After
installing a child's seat, make sure that the
indicator lamp for the front passenger air-
bags has illuminated. This indicates that the
system has detected the child's seat and
that the front passenger airbags have been
deactivated.<
>The indicator lamp does not come on as
long as a person of sufficient size and in a
correct sitting position is detected on the
seat. The front and side airbags for the pas-
senger are activated.
>The indicator lamp does not light up when
the seat is empty.
In this case, the front and side airbags for
the passenger are deactivated.
Operational readiness of airbag system
When the ignition key is moved into position 1,
the warning lamp lights up briefly, thus indicat-
ing the operational readiness of the entire air-
bag system and the safety belt tensioners.
Airbag system malfunction
>Warning lamp does not come on when the
ignition key is moved into position 1.
>The warning lamp lights up continuously.
Have the airbag system checked immedi-
ately if a malfunction occurs; otherwise,
there is a danger of the system failing to
respond in the expected manner to an impact
occurring within its normal response range.<

Reference
At a glance
Controls
Driving tips
Mobility
59
Lamps
Parking lamps/low beams
0Lights off and daytime running lamps*
1Parking lamps and daytime running lamps*
2Low beams and welcome lamps
3Automatic headlamp control
*, daytime run-
ning lamps
*, welcome lamps and Adaptive
Head Light
*
If you open the driver's door when the ignition is
switched off, then the exterior lighting is
switched off if the light switch is in position0, 2,
or3.
Switch on the parking lamps as needed, switch
position1.
Parking lamps
In switch position1, the vehicle is lit on all sides.
You can use the parking lamps for parking.
The parking lamps will discharge the bat-
tery. For this reason, avoid using them for
extended periods; otherwise, it may no longer
be possible to start the engine. It is preferable to
switch on the one-sided roadside parking
lamps, refer to page60.<
Low beams
The low beams light up when the switch is in
position2 and the ignition is on.
Defective lamps
The indicator lamp lights up:
At least one bulb of the exterior lighting
on the vehicle is defective.
Replacing bulbs, refer to page107.
Door handle lighting
When the parking lamps or low beams are
switched on, the interior door handles are also
illuminated. The intensity of the lighting is
adjusted using the instrument lighting control.
Welcome lamps
If, when parking the vehicle, you leave the light
switch in position2 or3, the parking lamps and
the interior lamps light up briefly when the vehi-
cle is unlocked with the remote control.
Pathway lighting
When you activate the headlamp flasher after
parking the vehicle and switching off the lamps,
the low beams will come on for a brief period.
You may also have this function deacti-
vated if you wish.<
Daytime running lamps*
If so desired, the light switch can remain in
position0, 1, or3.
In positions0 and3, after the ignition is
switched off, the exterior lighting is automati-
cally switched off. In position1, the parking
lamps are lit after the ignition is switched off.
The parking lamps can be switched on as
needed as described under Parking lamps.
You can have the daytime running lamps
activated on your vehicle.<

Lamps
60
Automatic headlamp control*
In switch position3, the low beams are
switched on or off automatically, for example in
tunnels, at dawn and dusk, and in the event of
precipitation. The Adaptive Head Light
* is acti-
vated.
When you enter a tunnel with bright ceiling
lighting, this can delay the switching on of your
low beams.
The headlamps can also come on when the sun
is low on the horizon in a blue sky.
The low beams remain switched on
regardless of the ambient light when you
switch on the front fog lamps
*.
When the daytime running lamps are activated,
refer to page59, the low beam headlamps are
always switched on when the switch is in
position3 and the ignition is switched on.<
If so desired, the light switch can remain in
position3. The exterior lamps are automatically
switched off after the ignition is switched off.
Automatic headlamp control cannot
serve as a substitute for the driver's judg-
ment in determining when the vehicle lamps
should be switched on. For example, the sys-
tem cannot detect fog or hazy weather. To
avoid safety risks, you should always switch on
the low beams manually under these condi-
tions.<
You can have the sensitivity of the head-
lamp control adjusted.<
Adaptive Head Light*
The concept
Adaptive Head Light is a variable headlamp
control system that enables better illumination
of the road surface. Depending on the steering
angle and other parameters, the light from the
headlamp follows the course of the road.
In tight curves, e.g. serpentines, or when mak-
ing turns, up to a speed of approx. 43 mph/
70 km/h, a turning lamp is switched on and illu-
minates the inside of the curve.
Activating Adaptive Head Light
With the ignition on, turn the light switch to the
Automatic headlamp control position, refer to
page59.
The turning lamp is switched on automatically
depending on the steering angle or the turn sig-
nal position.
In order not to blind oncoming traffic, the Adap-
tive Head Light points toward the passenger
side when the vehicle is stopped. When driving
in reverse, only the turning lamp is active and
lights up the region on the outside of the curve.
Malfunction
The LED next to the symbol for automatic head-
lamp control flashes. Adaptive Head Light is
malfunctioning or has failed. Have the system
checked as soon as possible.
High beams/
roadside parking lamps
1High beams
2Headlamp flasher
3Roadside parking lamps
Roadside parking lamps, left or right*
You also have the option of lighting up just one
side of your vehicle when parking. When doing
so, be sure to comply with national regulations.
After switching off the engine, press the lever
up or down past the resistance point, arrow 3.
The roadside parking lamps drain the bat-
tery. For this reason, avoid using them for
extended periods; otherwise, it may no longer
be possible to start the engine.<