wheel torque BMW X6 XDRIVE 50I 2009 E71 Owner's Manual

Controls
97Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
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.
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
BMW. The combined effects of xDrive and DSC
further optimize the traction and dynamic driv-
ing 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.
BMW X6: Dynamic Performance
Control
The concept
Dynamic Performance Control optimizes the
handling characteristic s of your BMW when
starting off, cornering, and during evasive
maneuvers. To achieve this, the system variably
distributes the drive torque of the rear axle to
the two rear wheels. This further increases the
steering precision and tracking stability of your
vehicle.
Display
The instrument panel display shows how xDrive
and Dynamic Performanc e Control are distrib-
uting the drive torque.

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.

Mobility
277Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
2.Guide the jack head into the rectangular
recess of the jacking point when cranking
up, refer to illustration detail.
3. Jack the vehicle up until the wheel you are
changing is raised from the ground.
Mounting a wheel
1.Unscrew the lug bolts and remove the
wheel.
2. Remove accumulations of mud or dirt from
the mounting surfaces of the wheel and
hub. Also clean the lug bolts.
3. Position the new wheel or compact wheel.
Secure the wheel by sc rewing at least two
lug bolts into opposite bolt holes.
When you mount wheels other than Genu-
ine BMW light-alloy wheels, different lug
bolts may also be required.
4. Screw in the remaining lug bolts. Tighten all
the bolts securely in a diagonal pattern.
5. Lower the vehicle and remove the jack from
beneath the vehicle.
After mounting
1.Tighten the lug bolts in a diagonal pattern.
To ensure safety, always have the
lug bolts checked with a calibrated
torque wrench as soon as possible to
ensure that they are tightened to the speci-
fied torque. Otherwis e, incorrectly tight-
ened lug bolts are a hidden safety risk. The
tightening torque is 101 lb ft/140 Nm. <
2. Stow the defective wheel in the cargo bay.
The defective wheel cannot be stored
under the floor panel flap due to its
size. < 3.
Check and correct the ti re inflation pressure
at the earliest opportunity.
Protect valve stems with valve screw
caps against dirt and contamination.
Dirt in valve stems is a frequent source of
gradual air loss. <
4. Initialize the Flat Tire Monitor, refer to
page 100, or reset the Tire Pressure Moni-
tor, refer to page 102.
5. Replace the damaged tire as soon as possi-
ble and have the new wheel/tire balanced.
Driving with compact wheel
Drive reservedly and do not exceed a
speed of 50 mph/80 km/h. Otherwise,
changes in the driving characteristics could
result, for example reduced track stability on
braking, extended brakin g distance, and altered
self-steering characterist ics in the limit range.
In conjunction with wint er tires, these charac-
teristics are more pronounced. <
Only one compact wheel may be
mounted. Restore the wheels and tires to
their original size as quickly as possible. Failure
to do so is a safety risk. <
Vehicle battery
Battery care
The battery is 100 % main tenance-free, i.e., the
electrolyte will last for the life of the battery
when the vehicle is operated in a temperate cli-
mate. Your BMW Sports Activity Vehicle Center
will be glad to advise in all matters concerning
the battery.
Charging battery
Only charge the battery in the vehicle via the
terminals in the engine compartment with the
engine switched off. Connections, refer to
Jump starting on page 280.
Disposal
Have old batteries disposed of following
replacement at your BMW Sports Activity

Everything from A to Z
312
3rd row seats
54
Tightening torque of the lug
bolts, refer to After
mounting 277
Tilt alarm sensor, switching
off 39
Tilting down passenger-side exterior mirror 58
"Time / Date" 88
"Time format" 89
Timer, refer to Preselecting
activation times 122
"Timer 2" for parked-car
ventilation 122
"Timer 1" for parked-car ventilation 122
Tire inflation pressures 249
– checking 249
– monitoring, refer to Flat Tire
Monitor 100
Tire Pressure Monitor TPM 101
Tire Quality Grading 254
Tires
– age 254
– air loss 101,103
– breaking-in 138
– changing 256
– condition 255
– damage 255
– flat tire, refer to Changing
wheels 275
– inflation pressure 249
– inflation pressure
monitoring, refer to FTM
Flat Tire Monitor 100
– new wheels and tires 256
– pressure loss 101,103
– pressure monitoring, refer to TPM Tire Pressure
Monitor 101
– replacing 275
– retreaded tires 256
– run-flat tires 256
– size 254
– tread 255
– wear indicators 255
– wheel/tire combination 256
– winter tires 257 "Title" for DVD system in
rear 209
TMC station, refer to Traffic information 166
Tone in audio mode
– adjusting 175
– middle setting 177
"Tone" in DVD system in
rear 209
Tone on locking/unlocking 31
To
ols, refer to Onboard
toolkit 269
"Top 8" for mobile phone 228
Torque
– engine 286
– lug bolts, refer to After
mounting 277
Touch tone dialing 230
Tow fitting 281
Towing 281
– tow fitting 281
"Town / City" for destination
entry 151
Town/city for destination entry 151
Tow-starting 281,282
"TPM" 102
TPM Tire Pressure
Monitor 101
– resetting system 102
– system limits 102
– warning lamp 103
Tracks
– finding 189
– random sequence 190
– sampling, scan 189
Traction-assist feature, refer
to DSC Dynamic Stability
Control 96
Traction control, refer to
DSC Dynamic Stability
Control 96
Traffic congestion
– bypassing 169
– displaying traffic information 166 Traffic information for
navigation
– depiction in route map 167
– displaying 167
– during destination
guidance 169
– switching on/off 166
– symbols 168
Transmission
– automatic transmission with Steptronic 70
– manually releasing transmission lock on
automatic transmission with
Steptronic 72
Transmission positions, refer
to Automatic transmission
with Steptronic 70
Transporting children
safely 61
Transport securing device, refer to Securing cargo 143
Tread depth, refer to Minimum tread depth 255
Treble, refer to Tone
control 175
"Treble / Bass" for DVD system in rear 20
9
"Trip computer" 81
Trip computer 81
Trip-distance counter, refer to
Trip odometer 78
Trip odometer 78
Turning circle, refer to
Dimensions 287
Turn signals 73
– indicator lamp 12
– replacing bulbs 270,273
U
Ultra-low sulfur diesel 245
Uniform Tire Quality Grading/
UTQR 254
"Units" 89
Units
– average fuel consumption 89
– temperature 89