2008 BMW X5 3.0Si brakes

Controls
61Reference
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With the engine stopped, the parking brake acts
on the rear wheels via an electromechanical
system. When the engine is running, the park-
ing brake acts on the disk brakes of the front
and rear wheels via the brake hydraulics.
Setting manually
Pull button. The parking brake is set.
The indicator lamp in the instrument
panel lights up red. The parking brake is
set.
Indicator lamp on Canadian models.
The remote control does not have to be
inserted into the ignition lock for the parking
brake to be set.
While driving
If exceptional circumstances should make it
necessary to set the parking brake while the
vehicle is in motion, pull on the button longer.
The vehicle continues to brake forcefully for as
long as you pull on the button.
The indicator lamp in the instrument
panel lights up red, a chime sounds and
the brake lamps light up.
Indicator lamp on Canadian models.
As soon as you brake the vehicle almost to a
stop, i.e., down to a speed of approx. 2 mph/
3 km/h or below, the parking brake remains set.
Releasing manually
Press the button with the brake depressed.
The indicator lamp in the instrument
panel goes out.
Indicator lamp on Canadian models.
When leaving the vehicle, always take
along the remote control; this precaution
prevents children from releasing the parking
brake, for example.<
Automatic Hold
The concept
This function assists you while you drive by
automatically setting and releasing the parking
brake, e.g. when you are stopped at a traffic sig-
nal or in stop-and-go traffic.
When Automatic Hold is activated, the vehicle is
automatically held in place when standing.
When driving up inclines, the system prevents
your vehicle from rolling backward in an undes-
ired way.
After the engine is started, the system can be
activated and deactivated at any time the
driver's seat is occupied until the next time the
engine is switched off.

Controls
69Reference
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Mobility
All washer nozzles are supplied from one reser-
voir.
Fill with water and – if required – with a washer
antifreeze, according to manufacturer's recom-
mendations.
In order to maintain the mixture ratio, mix
the washer fluid before filling.<
Capacity
approx. 6.3USquarts/6liters.
Cruise control*
The concept
The cruise control with a braking function is
available for use at speeds of approx. 20 mph/
30 km/h and higher. The vehicle stores and
maintains the speed that you set using the lever
mounted on the steering column. To keep the
specified speed constant, the system brakes if
the engine braking effect is not sufficient on a
downhill grade.
Do not use the cruise control under driv-
ing conditions that do not permit a con-
stant speed, e.g. when driving on winding
roads, in heavy traffic or in poor road conditions
such as snow, rain, ice, and loose road surface.
Otherwise you could lose control of the vehicle
and cause an accident.<
One lever for all functions
1Storing speed and maintaining or increas-
ing
2Storing speed and maintaining or decreas-
ing
3Deactivating cruise control
4Resuming stored speed
Maintaining current speed
Briefly press, arrow1, or briefly pull, arrow2
lever.
The speed currently being driven is stored and
maintained. It is indicated on the speedometer
and briefly in the instrument panel.
The controlled speed can drop on uphill grades
if the engine output is insufficient. If the engine
braking effect is not sufficient on a downhill
grade, the system lightly brakes the vehicle.
Increasing speed
Repeatedly press the lever up to or beyond the
resistance point, arrow1, until the desired
speed is set.
>Each time the lever is pressed to the resis-
tance point, the speed is increased by
approx. 1 mph or 1 km/h.
>Each time the lever is pressed beyond
the resistance point, the desired speed
increases by a maximum of 5 mph or
10 km/h.
The system stores the setting and maintains
the set speed.

Controls
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Brake assistant
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost and thus helps to achieve the short-
est possible braking distance during full brak-
ing. This system exploits all of the benefits pro-
vided by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the full braking.
DSC Dynamic Stability Control
DSC prevents traction loss in the driving wheels
when starting off and accelerating. The system
also identifies unstable driving conditions, such
as a loss of traction at the rear of the vehicle or
sliding of the vehicle in its front wheels. In these
cases, DSC helps the vehicle maintain a safe
course within physical limits by reducing engine
output and through braking actions in the indi-
vidual wheels.
The laws of physics cannot be repealed,
even with DSC. An appropriate driving
style remains the responsibility of the driver.
Therefore, do not restrict the additional safety
margin with a risky driving style, as otherwise
there is a risk of an accident.<
Deactivating DSC
Press the button until the DSC indicator lamp in
the instrument panel lights up, but not longer
than approx. 10 seconds. DTC Dynamic Trac-
tion Control and DSC are deactivated together.
Stabilizing interventions are now not carried
out.
A message appears on the Control Display.
Please note any supplementary information
that appears there.To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC
Press the button; the indicator lamp in the
instrument panel goes out.
For better control
The indicator lamp flashes:
DSC controls the drive forces and
brake forces.
The indicator lamps light up:
DSC is deactivated.
DTC Dynamic Traction Control
DTC is a version of DSC in which the drive out-
put is optimized for particular road conditions,
e.g. unplowed snow-covered roads. The sys-
tem assures the maximal drive output, but with
reduced driving stability. It is therefore neces-
sary to drive with appropriate caution.
You may find it useful to briefly activate DTC
under the following special circumstances:
>When driving in sand, on snowy inclines, in
slush or on unplowed, snow-covered road
surfaces
>When rocking a stuck vehicle free or start-
ing off in deep snow, sand or on loose
ground
>When driving with snow chains
*
Activating DTC
Press the button briefly; the DTC indicator lamp
in the instrument panel lights up.

Technology for comfort, convenience and safety
90
For better control
The indicator lamp flashes:
DTC controls the drive forces and
brake forces.
The indicator lamps light up:
DTC is activated.
Deactivating DTC
Press the button again; the DTC indicator lamp
in the instrument panel goes out.
xDrive
xDrive is the 4-wheel drive system of your X5.
The combined effects of xDrive and DSC fur-
ther optimize the traction and dynamic driving
characteristics. The 4-wheel drive system
xDrive variably distributes the drive forces to
the front and rear axle depending on the driving
situation and prevailing road conditions.
HDC Hill Descent Control
The concept
HDC is a system for driving downhill in steep
terrain. This system reduces vehicle speed on
steep downhill gradients, thus allowing you to
maintain even better control of your BMW
under these conditions. The vehicle moves at
approximately walking speed without active
intervention from the driver.
HDC is available for activation at vehicle speeds
below approx. 22 mph/35 km/h. When driving
down steep hills with a speed below approx.
22 mph/35 km/h, the vehicle reduces speed
automatically down to approximately walking
speed, approx. 5 mph/8 km/h, and then main-
tains this speed at a constant.
Only use HDC in transmission positions D or R.
Increasing or reducing speed
You can use the accelerator or brakes to vary
this automatically controlled speed within a
range extending from approx. 4 mph/6 km/h to
15 mph/25 km/h.You can specify a target speed within the same
range by using the lever of the cruise control.
With downhill grade over 10Ξ you can reduce
the speed to approx. 3 mph/4 km/h. Pull the
lever of the cruise control beyond the resis-
tance point, arrow3.
1Increasing speed
2Pull to the resistance point:
Reduce speed to approx. 4 mph/6 km/h
3Pull beyond the resistance point:
With downhill grade over 10Ξ, reduce
speed to approx. 3 mph/4 km/h.
Activating HDC
Press the button; the LED lights up.
The HDC display is shown in the instrument
panel.
The LED flashes when the brakes are applied
automatically.
Deactivating HDC
Press the button again. The LED and the HDC
display go out.
HDC is also deactivated at speeds over approx.
37 mph/60 km/h.

Things to remember when driving
128
Things to remember when driving
Break-in period
Moving parts need breaking-in time to adjust to
each other. To ensure that your vehicle contin-
ues to provide optimized economy of operation
throughout an extended service life, we request
that you devote careful attention to the follow-
ing section.
Engine and differential
Always obey all official speed limits.
Up to 1,200 miles/2,000 km
Drive at changing engine and vehicle speeds,
however do not exceed 4,500 rpm or 100 mph/
160 km/h.
Avoid full-throttle operation and use of the
transmission's kick-down mode during these
initial miles.
From 1,200 miles/2,000 km
The engine and vehicle speed can gradually be
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until after an initial break-in
period. Therefore, drive reservedly during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive in a reserved manner during
this break-in period.
Following part replacement
Observe the break-in instructions again if com-
ponents mentioned above must be replaced
after subsequent driving operation.
Saving fuel
The fuel consumption of your vehicle depends
on various factors. Through a few simple steps,
your driving style, and regular maintenance, you
can have a positive influence on your fuel con-
sumption and environmental impact.
Removing unnecessary cargo
Additional weight increases fuel consumption.
Removing add-on parts after use
Remove unneeded auxiliary mirrors, roof or rear
luggage racks after use. Add-on parts attached
to the vehicle impede the aerodynamics and
increase the fuel consumption.
Closing windows and panorama glass
sunroof
An open panorama glass sunroof or open win-
dows likewise increase the drag coefficient and
therefore the fuel consumption.
Check tire inflation pressures regularly
Check and correct the tire inflation pressure as
needed at least twice a month and before long
trips.
An insufficient tire inflation pressure increases
the rolling resistance and thus increases the
fuel consumption and tire wear.
Driving off immediately
Do not allow the engine to warm up by leaving it
running while the vehicle remains stationary.
Instead, begin to drive at a moderate engine
speed. This is the fastest way for the cold
engine to reach its operating temperature.
Thinking ahead when driving
Avoid unnecessary acceleration and braking.
To do so, maintain the appropriate distance
from the vehicle in front of you. An anticipatory

Things to remember when driving
130 possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.
Do not drive with your foot resting on the
brake pedal. Even light but consistent
pedal pressure can lead to high temperatures,
brake wear and possibly even brake failure.<
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor traffic conditions to
ensure that this maneuver does not endanger
other road users. The heat generated in this
process helps dry the pads and rotors to ensure
that full braking efficiency will then be available
when you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even
light but consistent pressure on the brake pedal
can lead to high temperatures, brake wear and
possibly even brake failure.<
The braking effect of the engine can be further
increased by downshifting in the manual mode
of the automatic transmission, if necessary into
first gear, refer to page65. This prevents an
excessive strain on the brakes.
Do not drive in idle or with the engine
stopped, otherwise there will be no
engine braking action or support of the braking
force and steering.
Never allow floor mats, carpets or any other
objects to protrude into the area of movement
of the pedals and impair their operation.<
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on rotors, while contaminants accumulate on the
brake pads. This occurs because the minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail to
cure.
When vehicle is parked
Condensation forms in the automatic climate
control system during operation, and then exits
under the vehicle. Traces of condensed water
under the vehicle are therefore normal.
Before driving into a car wash
Fold in the exterior mirrors, refer to page51,
otherwise they could be damaged due to the
width of the vehicle.
Release the parking brake, particularly when
you have activated Automatic Hold, refer to
page61.
General information on the care and mainte-
nance of your BMW is contained in the Caring
for your vehicle brochure.
Mixed tires*
Before driving into a car wash, make sure
that the vehicle width is not too large for
the car wash, as otherwise the vehicle and the
car wash could be damaged.<
Rear window wiper
The rear window wiper can be damaged in car
washes. Take appropriate protective measures;
ask the car wash operator if necessary.
With comfort access*
Insert the remote control into the ignition lock.
The engine can be switched off in transmission
position N, also refer to page37.

Driving tips
133Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
Driving on poor roads
Your X5 is at home on all roads and surfaces.
It combines a 4-wheel drive system with the
advantages of a normal passenger car.
Do not drive on unpaved terrain, as other-
wise the vehicle may be damaged.<
When you are driving on poor roads, there are a
few points which you should strictly observe for
your own safety, for that of your passengers,
and for the safety of the vehicle:
>Familiarize yourself with the vehicle before
driving off and avoid taking risks at all costs.
>Adapt your driving speed to the road condi-
tions. The steeper and rougher the road
surface is, the lower the speed should be.
>You can operate your vehicle on uphill and
downhill gradients with a maximum slope of
50 %. If you want to drive on uphill or down-
hill gradients of this kind, make sure before-
hand that the engine oil and coolant levels
are near the MAX mark, refer to page242.
>Use the HDC Hill Descent Control when
driving down extremely steep grades, refer
to page90. It is possible to start off on
grades of up to 33 %.
The permissible body roll is 50 %.
>While driving, watch carefully for obstacles
such as rocks or holes. Try to avoid these
obstacles whenever possible.
>Please make sure that the undercarriage
does not touch the ground, for example on
crests and bumpy roads. The ground clear-
ance of the vehicle is a maximum of approx.
8 in/20 cm. Please note that the ground
clearance can vary depending on loading
and the driving conditions of the vehicle.
>Only drive through water on roads up to a
maximum depth of 20 in/50 cm and only at
walking speed, making sure not to stop in
the process.
>After driving through water at low speed,
lightly press the brake pedal several times
to dry the brakes and to prevent the braking
effect from being reduced by wetness.>Depending on the condition of the surface,
it may be practical to briefly activate DTC,
refer to DTC Dynamic Traction Control on
page89.
>If the drive wheels spin on one side, depress
the accelerator pedal sufficiently so that the
driving stability control systems can distrib-
ute the drive forces to the individual wheels.
Please note the following points after driving on
poor roads to maintain the driving safety of your
BMW:
>Clean the coarsest dirt from the body.
>Clean mud, snow, ice etc. from the wheels
and tires and check the tires for damage.

Everything from A to Z
272 BMW homepage4
BMW maintenance
system245
"BMW Service settings"229
BMW website4
Body roll, refer to Driving on
poor roads133
Bottle holder, refer to Cup
holders120
Brake assistant89
Brake force display97
Brake lamps
– brake force display97
– replacing bulbs249
Brake rotors130
Brakes
– ABS Antilock Brake
System88
– brake assistant89
– brake force display97
– breaking-in128
– CBC Cornering Brake
Control88
– electronic brake-force
distribution88
– parking brake60
– refer to Braking safely129
– warning lamp13
Brake system128
– brake pads128
– breaking-in128
– disk brakes130
Braking safely129
Breakdown, Flat Tire
Monitor92
Breakdown services, refer to
Roadside Assistance256
Breaking-in brake pads128
Breaking-in differential128
Break-in period128
"Brightness"82
– for DVD system in rear196
– in TV mode184
Brightness
– of Control Display82
– of the rear view camera88
– on Head-Up Display100
"Brightness / Position"100Button for starting engine59
Buttons on steering wheel11
Bypassing traffic
congestion157
C
Calibrating driver's seat49
California Proposition 65
Warning6
"Call"216,227
Call
– accepting214
– displaying accepted217
– ending215
– in absence217
– starting215
Calling
– from phone book216
– from Top 8 list217
– redialing217
– refer to telephone operating
instructions
Camera, refer to Rear view
camera86
"Camera picture and PDC"88
"Camera view
– full screen"88
– main window"88
Can holder, refer to Cup
holders120
Capacities264
Capacity of cargo bay264
Car battery, refer to Vehicle
battery253
Car care, refer to Caring for
your vehicle brochure
Car-care products, refer to
Caring for your vehicle
brochure
"Car Data"73
Care246
– refer to Caring for your
vehicle brochure
Cargo
– refer to Loading131
– securing132
– securing with ski bag125Cargo area, refer to Cargo
bay122
Cargo area cover, refer to Roll-
up cover122
Cargo bay
– capacity264
– emergency operation, refer
to Opening manually33
– expanding123
– opening/closing, refer to
Liftgate33
– opening/closing, refer to
Tailgate35
– opening from inside33
– opening from outside33
– opening with remote
control30
Cargo bay cover, refer to Roll-
up cover122
Caring for artificial leather,
refer to Caring for your
vehicle brochure
Caring for leather, refer to
Caring for your vehicle
brochure
Caring for light-alloy wheels,
refer to Caring for your
vehicle brochure
Caring for the carpet, refer to
Caring for your vehicle
brochure
Caring for the vehicle finish,
refer to Caring for your
vehicle brochure
Car key, refer to Keys/remote
control28
Car phone208
– installation location, refer to
Center armrest119
– refer to Mobile phone208
– refer to separate operating
instructions
Car radio, refer to Radio166
Car wash130
– also refer to Caring for your
vehicle brochure
– before driving in60
– with comfort access37