2005 BMW X3 3.0I snow chains

Technology for comfort, convenience and safety
48
Switching off DSC
Press the button; the indicator lamp in the
instrument cluster lights up continuously.
DSC is now deactivated.
Stabilizing interventions of the chassis control
system DSC are no longer available. However,
the braking interventions that simulate the
function of the differential lock continue to be
active.
In the following exceptional circumstances, it
may be useful to switch off DSC for a short
period:
>When rocking the vehicle and starting off in
deep snow or on loose road surfaces
>On sandy road surfaces
>On poor surfaces with deep ruts
>If the wheels spin on muddy surfaces
>When driving with snow chains
As a result of the braking interventions,
the brakes may be subjected to additional
loads when the system is switched off. In order
to limit the brake temperature, brief automatic
suppression of the brake activation is possible.
To maintain vehicle stability, always drive with
the system switched on when possible.<
Reactivating DSC
Press the button again; the indicator lamp in the
instrument cluster goes out. DSC is now acti-
vated.
xDrive
xDrive is the all-wheel drive system of your X3.
The combined effects of xDrive and DSC fur-
ther optimize the traction and dynamic driving
characteristics. The all-wheel drive system
xDrive variably distributes the drive torque 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 hill descent assistance that
reduces the speed on steep downward inclines
and makes it even easier to control the driving
characteristics of your BMW under these condi-
tions. The vehicle moves at slightly more than
walking speed without active intervention from
the driver.
HDC is available for activation at vehicle speeds
below approx. 20 mph/35 km/h. When driving
down steep hills with a speed below approx.
20 mph/35 km/h, the vehicle reduces speed
automatically down to slightly more than walk-
ing speed, approx. 5 mph/8 km/h, and then
maintains this speed at a constant.
You can use the accelerator or brakes to vary
this automatically controlled speed within a
range extending from approx. 3 mph/5 km/h to
15 mph/25 km/h.
You can specify a target speed within the same
range by using the +/– buttons of the cruise
control on the steering wheel.

Technology for comfort, convenience and safety
50 The check of the tire inflation pressure is based
on monitoring the relative speeds of the wheels.
A flat tire is detected and reported on the basis
of a deviation in certain speed ratios.
Functional requirement
So that the Flat Tire Monitor can learn the cor-
rect inflation pressure, please perform the fol-
lowing steps:
1.Check the inflation pressures in all tires
2.Compare with the inflation pressure table
on page83 and correct if necessary
3.Initialize the system.
System limits
The Flat Tire Monitor cannot indicate
sudden severe tire damage caused by
outside factors and does not detect a natural,
even pressure drop in all four tires.<
In the following situations, on the other hand,
there can be delays in detecting tire pressure
losses, and even system failure:
>When driving on snow-covered or slippery
road surfaces.
>In the case of performance-oriented driving:
slip in the drive wheels, high lateral acceler-
ation.
>False alarms and undetected loss of pres-
sure may occur when you are driving with
snow chains fitted.
>When driving with a compact wheel, the Flat
Tire Monitor cannot operate.
Initializing system
Perform the initialization immediately
every time you correct the inflation pres-
sure, change a tire or change a wheel or all
wheels. This requires a trip.<1.Start the engine, but do not begin to drive.
2.Press the button until the yellow indicator
lamp in the instrument cluster lights up for a
few seconds.
3.Begin driving.
It takes a few minutes until the Flat Tire Monitor
can detect and indicate a flat tire.
Do not initialize the system when driving
with snow chains or with a compact
wheel.<
Indication of a flat tire
The warning lamp lights up yellow.
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.<
3.Replace the damaged wheel, refer to
Changing a wheel on page99.
Brake Force Display
The Brake Force Display lights up in two
stages, depending on how heavily you brake.

Reference
At a glance
Controls
Driving tips
Mobility
87
Snow chains*
Only certain snow chains have been tested by
BMW and classified and approved as safe. You
can obtain a list of these from your BMW Sports
Activity Vehicle Center. BMW recommends the
use of approved narrow-link snow chains only.
These snow chains are approved exclusively for
use on summer or winter tires in pairs on the
rear wheels.
Observe the manufacturer's instructions when
installing snow chains.
Do not exceed a vehicle speed of 30 mph/
50 km/h with snow chains mounted.
Snow chains may not be mounted on the fol-
lowing tires:
>255/45 R 18
>255/40 R 19
After mounting snow chains, do not ini-
tialize the Flat Tire Monitor.
When you are driving with snow chains, it can
be beneficial to switch off DSC briefly, refer to
page48.<

Everything from A to Z
120 Remaining distance for
Service43
Remote control16
– garage-door opener62
– malfunction17
– tailgate17
Removing condensation,
windows
– air conditioner58
– automatic climate control60
Replacement fuses102
Replacement keys16
Replacing bulbs, refer to
Lamps and bulbs95
Replacing tires
– new wheels and tires86
– wheel changes99
Replacing windshield
wiper95
Reporting safety defects7
Reserve indicator lamp, refer
to Fuel gage42
Restraint systems
– for children31
– refer to Safety belts27
Reverse gear
– automatic transmission with
Steptronic37
– manual transmission36
Roadside Assistance, refer to
Receiving assistance103
Roadside parking lamps54
– replacing bulbs97
Roll-up cover, refer to Cargo
area cover67
Roof load, refer to
Weights112
Roof-mounted luggage
rack76
Rope, refer to Tow-starting
and towing105
Rotating coin holder, refer to
Storage compartments64
Run-flat indicator, refer to Flat
Tire Monitor49
S
Safety belts27
– sitting safely24
– warning lamp27
Safety belt tensioners, refer to
Safety belts27
Safety defects, reporting7
Safety feature, power
windows20
Safety systems, refer to
– ABS Antilock Brake
System47
– Airbags51
– DSC Dynamic Stability
Control47
– xDrive48
Screwdriver, refer to Onboard
tool kit95
Seat heating27
Seat memory, refer to Seat
and mirror memory26
Seats
– adjusting electrically26
– adjusting sports seat25
– heating27
– memory, refer to Seat and
mirror memory26
– sitting safely24
– storing the setting26
Securing cargo, refer to Cargo
loading74
Selector lever, automatic
transmission37
Selector lever interlock, refer
to Shiftlock37
Selector-lever positions,
automatic transmission36
Service, refer to Receiving
assistance103
Service and warranty7
Service Engine Soon34,94
Service Interval Display43,93
Setting interior
temperature57,60
Shifting gears, with automatic
transmission with
Steptronic37Shiftlock37
Side airbags51
Side tilt, permissible76
Side turn signals, replacing
the bulbs97
Sitting safely24
– with airbags24
– with safety belts24
Ski bag66
Smokers' package, refer to
Ashtray65
Snow chains87
SOS, refer to Initiating an
emergency call103
Spare fuses102
Spare key16
Spare tire, refer to Wheel
changes99
Spare wheel, refer to Compact
wheel99
Specified oils91
Speed
– with compact wheel101
– with winter tires86
Speedometer11
– refer to Instrument
cluster11
Sport program, automatic
transmission with
Steptronic37
Sports seat25
Stability control, refer to DSC
Dynamic Stability
Control47
Starting, refer to Engine34
Starting difficulties
– jump starting104
Starting engine34,35
Starting problems at very low
temperatures35
Status of this Owner's Manual
at time of printing5
Steering lock34
Steering wheel10,12
– adjustment28
– buttons12
– lock34
Steering wheel heater28