brakes BMW X6 XDRIVE 50I 2009 E71 Owner's Manual

Driving
66
The ignition switches off automatically
* if the
driver's door is opened. Pressing the start/stop
button again switches the ignition back on.
For example, the ignition is not switched off in
the following situations:
> the brakes are actuated
> the low beams are switched on
Starting engine
Do not run the engine in closed rooms,
otherwise the inhalati on of toxic exhaust
gases can cause uncons ciousness and death.
The exhaust gases contain carbon monoxide,
an odorless and colorless, but highly toxic gas.
Never leave an unattend ed vehicle with the
engine running, as such a vehicle represents a
potential safety hazard.
To prevent the vehicle from rolling, always
engage transmission position N or P and set the
parking brake before le aving the vehicle with
the engine running. <
Do not allow the engine to warm up by leaving it
running while the vehicl e remains stationary.
Instead, begin to drive at a moderate engine
speed.
The engine starts when you depress the
brake pedal while pressing the Start/Stop
button. <
Avoid frequent starting in quick succes-
sion or repeated starting attempts in
which the engine does no t start. Otherwise, the
fuel is not burned or inadequately burned and
there is a danger of overheating and damaging
the catalytic converter. < Remote control in ignition lock or with comfort
access in vehicle, refer to page
39.
1. Depress brake pedal.
2. Press the Start/Stop button.
The system responds by automatically engag-
ing the starter for a cert ain period and automat-
ically disengaging it as soon as the engine
starts.
Diesel engine
When the engine is cold and outside tempera-
tures are below approx. 32 7/06 , the starting
process may be briefly delayed by an automatic
preglow phase. The pr eglow indicator lamp
lights up in the instrument panel and a message
appears on the Control Display.
Switching off engine
When leaving the vehicle, always take
along the remote control.
Set the parking brake firmly when parking; oth-
erwise, the vehicle could roll. <
Procedure
1.Engage transmission position P with the
vehicle stationary.
2. Press the Start/Stop button.
3. Set the parking brake.
4. Remove the remote control from the igni-
tion lock, refer to page 65.
Before driving into a car wash
The vehicle can roll if yo u proceed according to
the following steps:
1. With comfort access
*: insert the remote
control into the ignition lock.
2. Depress brake pedal.
3. Engage transmission position N.
4. Release the parking brake or deactivate
Automatic Hold.
5. Switch off the engine.

Controls
67Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Transmission position P will be engaged:
>automatically after approx. 30 minutes
> if you remove the remo te control from the
ignition lock
Parking brake
The concept
Your BMW is equipped with an electromechan-
ical parking brake.
The parking brake is primarily intended to pre-
vent the vehicle from rolling while parked.
You can use the parking brake in two ways:
> manually, by pulling an d pushing the button
> automatically, by ac tivating Automatic
Hold, refer to page 67
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 do es not have to be
inserted into the ignition lock for the parking
brake to be set.
While driving
If exceptional circumst ances should make it
necessary to set the pa rking 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 pa rking 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 yo u as you drive by auto-
matically 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 ac tivated, the vehicle is

Controls
75Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Windshield washer nozzles
Both windshield washer nozzles are automati-
cally heated with the engine running or the igni-
tion switched on.
BMW X5: rear window wiper
1Intermittent mode. When reverse gear is
engaged, continuous operation is switched
on automatically
2 Cleaning the rear window
Do not use washing mechanisms when
the washer fluid reservoir is empty, other-
wise you will damage the washer pump. <
Washer fluid
Washer fluid antifreeze is flammable. For
this reason, keep it away from ignition
sources and store only in the closed original
container out of reach of children. Otherwise,
there is the danger of bodily injury. Always
observe the instructions for use provided on the
containers. <
Filler neck for washer fluid
Only add washer fluid with the engine
cooled down to excl ude contact with hot
engine components. Otherwise there is a dan-
ger of fire and to personal safety if the fluid is
spilled. < All washer nozzles are supplied from one reser-
voir.
Fill with water and – if re
quired – 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. 6.3 US quarts/6 liters.
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. <

Driving
76
One lever for all functions
1Storing speed and main taining or increas-
ing
2 Storing speed and maintaining or decreas-
ing
3 Deactivating cruise control
4 Resuming stored speed
Maintaining current speed
Briefly press, arrow 1, or briefly pull, arrow 2
lever.
The speed currently being driven is stored and
maintained. It is indica ted 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 leve r up to or beyond the
resistance point, arrow 1, 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.
Accelerating with lever
Accelerate slightly:
Press the lever up to the resistance point,
arrow 1, until the desired speed is reached.
Accelerate more rapidly:
Press the lever beyond the resistance point,
arrow 1, until the desired speed is reached.
The vehicle accelerates without pressure on
the accelerator pedal. The system stores the
setting and maintains the set speed.
Reducing speed
Repeatedly pull the lever up to the resistance
point or beyond, arrow 2, until the desired
speed is displayed.
> Each time the lever is pulled up to the resis-
tance point, the desired speed decreases
by approx. 1 mph or 1 km/h.
> Each time the lever is pulled beyond the
resistance point, the desired speed is
decreased by a maximum of 5 mph or
10 km/h until the minimum speed of
20 mph or 30 km/h is reached.
The system stores the setting and maintains
the set speed.
Deactivating cruise control
Briefly press the leve r up or down, arrow3.
The displays in the speedometer go out.
In addition, the system is automatically deacti-
vated:
> when braking
> when transmission position N is engaged
> when DTC is activate d or DSC is deacti-
vated
> when HDC is activated
> when the parking brake is set
> when driving stability control systems inter-
vene

Technology for comfort, convenience and safety
96
Cleaning rear view camera
The lens of the rear view camera is located on
the liftgate.
The picture quality of the rear view camera may
be impaired by dirt. Clean the lens with a moist,
nonabrasive cloth.
The lens is automatically heated in case of frost.
Driving stability control
systems
Your BMW is equipped wi th an extended array
of systems designed to enhance and maintain
vehicle stability under extreme conditions.
ABS Antilock Brake System
ABS prevents locking of the wheels during
braking. Safe steering response is maintained
even during full braking. Active safety is thus
increased.
ABS is operational every time you start the
engine. Braking safely, refer to page 140.
CBC Cornering Brake Control
When braking during curves or when braking
during a lane change, dr iving stability and steer-
ing response are improved further.
Electronic brake-force distribution
The system controls the brake pressure in the
rear wheels to ensure st able braking behavior.
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 th
e pressure on the brake pedal
for the duration of the full braking.
DSC Dynamic Stability Control
DSC prevents traction lo ss 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 lim its 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 ar e deactivated together.
Stabilizing intervention s 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.

Technology for comfort, convenience and safety
98
Press the BC button on the turn signal lever
repeatedly until the disp
lay appears, refer to
arrow.
The drive train and wheels are schematically
depicted.
Bar graphs show the cu rrent distribution of
drive torque. The longer an illuminated bar is,
the greater the drive torq ue in the related wheel.
Malfunction
If xDrive and Dynamic Performance Control are
malfunctioning, the instrument panel display
appears in gray.
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 cont rolled 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 10 Ξ you can reduce
the speed to approx. 3mph/4km/h. Pull the
lever of the cruise control beyond the resis-
tance point, arrow 3.
1 Increasing speed
2 Pull to the resistance point:
Reduce speed to approx. 4 mph/6 km/h
3 Pull beyond the re sistance point:
With downhill grade over 10 Ξ, 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 automatically deactivated at speeds
over approx. 37 mph/60 km/h.

Things to remember when driving
138
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:
> Gasoline engine
4,500 rpm or 100 mph/160 km/h
> Diesel engine
3,500 rpm or 90 mph/150 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 no t achieve their full trac-
tion potential until afte r 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 incr eases 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 glass sunroof*/
panorama glass sunroof*
An open glass sunroof/panorama glass sunroof
or open windows likewise increase the drag
coefficient and therefore the fuel consumption.
Checking tire in flation 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 an d 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 vehicl e remains stationary.
Instead, begin to drive at a moderate engine

Things to remember when driving
140
planing, and is characterized by a partial or
complete loss of contac
t between the tires and
the road surface, ultima tely undermining your
ability to steer and brake the vehicle. <
The risk of hydroplaning increases as the tread
depth of the tires decreases, also refer to Mini-
mum tread depth on page 255.
Driving through water
Maximum water depth:
>BMW X5 20 in/50 cm
> BMW X6 17 in/45 cm
Only drive through water up to the above-
mentioned depth at no greater than walk-
ing speed; otherwise, the engine, electrical sys-
tem, and transmission can be damaged. <
Braking safely
Your BMW is equipped with ABS as a standard
feature. In situations that require it, it is best to
brake with full force. Since the vehicle maintains
steering responsiveness, you can still avoid
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 pre ssure 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 br
aking 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 transmis sion, if necessary into
first gear, refer to page 71. 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 op erating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on
rotors, while contaminan ts 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 re spond 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 page 57,
otherwise they could be damaged due to the
width of the vehicle.
Release the parking brake, particularly when
you have activated Auto matic Hold, refer to
page 67.

Things to remember when driving
144
Driving on poor roads
Your BMW 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 shou ld strictly observe for
your own safety, for that of your passengers,
and for the safety of the vehicle:
> Familiarize yourself wi th the vehicle before
driving off and avoid taking risks at all costs.
> Adapt your driving spee d to the road condi-
tions. The steeper and rougher the road
surface is, the lower the speed should be.
> If you want to drive on very steep uphill or
downhill gradients, ma ke sure beforehand
that the engine oil and coolant levels are
near the MAX mark, refer to page 259.
BMW X5: you can operate your vehicle on
uphill and downhill gradients with a maxi-
mum slope of 50 %.
> On very steep downhill slopes, use Hill
Descent Control HDC, refer to page 98.
BMW X5: it is possible to start off on inclines
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 whenev er possible.
> Make sure that the undercarriage does not
touch the ground, for example on crests and
bumpy roads. The ground clearance of the
vehicle is a maximum of approx. 8 in/20 cm.
Please note that the ground clearance can
vary depending on lo ading and the driving
conditions of the vehicle.
> Only drive through road surface water up to
a maximum water depth of
> BMW X5 20 in/50 cm
> BMW X6 17 in/45 cm
and only drive at walking speed; do not
remain stationary. >
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
page 97.
> If the drive wheels spin on one side, depress
the accelerator pedal su fficiently 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.

Mobility
265Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Care
Car-care products
For the cleaning and care of your vehicle, BMW
recommends using only products that BMW
has approved for this purpose.
Regular cleaning and care make a significant
contribution to retain ing your BMW's value.
The BMW Sports Activity Vehicle Center will be
happy to consult you on products and services
for the cleaning and care of your BMW.
Genuine BMW Care Products are materi-
als tested, laboratory tested, and tested in
actual use. They offer optimum care and pro-
tection for your vehicle. <
Do not use cleaners that contain alcohol
or solvents; they can damage your vehi-
cle. <
Cleaning agents can contain substances
that are dangerous or pose health risks.
You should therefore heed the warnings and
hazard indications on the packaging. Open the
doors or windows on your vehicle whenever
cleaning the interior. Make sure there is suffi-
cient ventilation in enclosed spaces. Use only
products that are formul ated for vehicle clean-
ing. <
Exterior care
Washing your vehicle
In the winter months, it is especially
important to ensure that the vehicle is
washed on a regular basis. Otherwise, signifi-
cant soiling and road salt can cause damage to
the vehicle.<
After washing the vehicle, apply the
brakes briefly to dry th em. Failure to do so
may lead to a reduction in braking efficiency and
also to corrosion of the brake rotors. <
Car washes
Give preference to cloth car washes.
Before driving into the car wash, make sure that
it is suitable for your BMW. Pay attention to the
following points:
> Dimensions of your vehicle, refer to
page 287.
> If necessary: fold in door mirror, refer to
page 57.
> Maximum permissible tire width.
Preparations for driving into the car wash:
> Deactivate rain sensor
* to prevent
unwanted wiper activation.
> BMW X5: deactivate rear window wiper and
protect it from damage. Take appropriate
protective measures; inquiring with the car
wash operator as needed.
> Remove additional add- on parts, e.g. spoil-
ers or phone antennas, if they could be
damaged.
Automatic transmission with
Steptronic
Before driving into the car wash, observe the
following so that the vehicle is able to roll:
1. Insert the remote cont rol into the ignition
lock, even with comfort access.
2. Shift into transmission position N.
3. Release the parking brake.
4. Deactivate Automatic Hold, refer to
page 68.
5. Switch off the engine.
6. Leave the remote control in the ignition lock
so that the vehicle can roll.