traction control BMW X3 3.0I 2004 E83 Owner's Manual

Reference
At a glance
Controls
Driving tips
Mobility
35
Installing child-restraint
systems
Before installing any child-restraint system
or child seat, read the following:
Observe the child-restraint system
manufacturer's instructions for instal-
lation and use. Otherwise the degree of
protection can be reduced.
After an accident, have all parts of the rele-
vant vehicle safety belt system checked by
a BMW Sports Activity Vehicle Center and
replaced if necessary.<
Commercially-available child-restraint sys-
tems are designed to be secured with a lap
belt or with the lap belt portion of a combi-
nation lap/shoulder belt. Improperly or
inadequately installed restraint systems
can increase the risk of injury to children.
Always read and follow the instructions that
come with the system.
Child seat security
All of the rear belt retractors and the front
passenger's safety belt can be locked for
mounting and securing child-restraint sys-
tems.
Information regarding this is located near
the buckle latch of each safety belt.
To lock the safety belt
Pull the entire length of the belt from the
belt retractor. Allow the reel to retract the
belt somewhat and engage the buckle,
then tighten the belt against the child-
restraint system. The retraction mechanism
is now locked.
To unlock the safety belt
Release the buckle, remove the child-
restraint system and allow the belt retractor
to reel the belt completely in.
Child-restraint system with tether
strap
If you use a child-restraint system with a
tether strap, three additional tether anchor-
age points have been provided, refer to the
arrows in the illustration. Depending on the
location selected for seating in the rear
passenger area, attach the tether strap to
the corresponding anchorage point to
secure the child-restraint system, as
shown in the illustration below.
Each seating position is fitted with a head
restraint.
Outer seating positions:
Lift the head restraint and pass the tether
strap between the head restraint and the
seat back. It is recommended to readjust
the head restraint into the lowest possible
position.
Center seating position:
The head restraint must be adjusted into
the lowest possible position. Pass the
tether strap over the head restraint.

Reference
At a glance
Controls
Driving tips
Mobility
51
Indicator lamp
The indicator lamp in the instrument
cluster goes out soon after you start
the engine.
If the indicator lamp flashes:
DSC is active and is regulating the drive
and braking forces.
The indicator lamp stays lit:
DSC has been switched off using the but-
ton and the stabilizing interventions are no
longer available.
Switching off DSC
Press the button; the indicator lamp comes
on and stays on.
Stabilizing interventions of the chassis con-
trol 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 effective to switch off the DSC for
a short period:
>When rocking the vehicle and starting
off in deep snow or on loose road sur-
faces
>On sandy road surfaces
>On poor surfaces with deep ruts
>If the wheels churn on muddy surfaces
>When driving with snow chains.
As a result of the braking interven-
tions, the brakes may be subjected to
additional loads when the system is
switched off. In order to limit the brake tem-
perature, brief automatic masking of the
brake activation is possible.
To maintain vehicle stability, always drive with the system switched on when possi-
ble.<
Switching DSC on
Press the DSC button again; the indicator
lamp in the instrument cluster goes out.
DSC is now activated.
xDrive
xDrive is the all-wheel drive system of your
BMW X3. The combined effects of xDrive
and DSC further optimize the traction and
dynamic driving characteristics. The all-
wheel drive system xDrive variably distrib-
utes the drive torque to the front and rear
axle depending on the driving situation and
prevailing road conditions.
Hill Descent Control HDC
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 conditions.
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 vehi-
cle reduces speed automatically down to
slightly more than walking 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 +/Ð buttons of the
cruise control in the steering wheel.
HDC is automatically deactivated once
vehicle speed again exceeds approx.
35 mph/60 km/h.

Things to remember when driving
76
Things to remember when driving
Break-in procedures
To ensure that your vehicle provides maxi-
mum economy throughout a long service
life, we request that you observe the fol-
lowing instructions:
Engine and differential
Up to 1,200 miles/2,000 km:
During this initial period you should attempt
to avoid constant, steady-state operation
and vary both vehicle and engine speeds
as often as possible. Until the break-in
period has been completed you should
also refrain from exceeding the following:
>4,500 rpm or 100 mph/160 km/h.
Always obey all official speed limits.
Refrain from using full throttle and avoid
pressing the accelerator beyond the kick-
down point.
Once you have driven 1,200 miles/
2,000 km, the engine and vehicle speeds
can be gradually increased.
You should also comply with these break-in
procedures should the engine or one of the
differentials be replaced later in the course
of the vehicle's service life.
Tires
Due to technical factors associated with
their manufacture, tires do not achieve their
full traction potential until after an initial
break-in period. For this reason, drive with
extra care during the initial 200 miles/
300 km.
Obey your local and state maximum speed
limits.
When the vehicle is operated on wet
or slushy roads, a wedge of water
may form between the tire and the road
surface. This phenomenon is referred to as
hydroplaning and can lead to partial or
complete loss of traction, vehicle control
and braking effectiveness. Reduce your
speed on wet roads.<
Brake system
Approx. 300 miles/500 km must elapse
before the brake pads and rotors achieve
the optimal pad-surface and wear patterns
required for trouble-free operation and
long service life later on.
To break in the separate handbrake drums,
apply the handbrake lightly when coasting
to a standstill Ð at a traffic signal, for
instance; use caution to avoid posing a
danger to other road users.
To avoid corrosion, repeat this procedure
from time to time.
The brake lamps do not come on when the
handbrake is set.
Vacuum for the brake system servo
unit on your BMW is available only
when the engine is running. When you
move the vehicle with the engine off Ð e.g.
by towing Ð substantially higher levels of
pedal force will be required to brake the
vehicle.<
Clutch
The function of the clutch is also only at its
optimized level after a distance driven of
approx. 300 miles/500 km. During this
break-in period, engage the clutch gently.
General driving notes
High temperatures
Extreme temperatures occur at the
catalytic converter on this and every
catalyst-equipped vehicle. Do not remove
the heat shields installed adjacent to vari-
ous sections of the exhaust system, and
never apply undercoating to them. When
driving, standing at idle and while parking
take care to avoid possible contact
between the hot exhaust system and any
highly flammable materials such as hay,
leaves, grass, etc. Such contact could lead

Wheels and tires
88
Tire identification marks
Knowledge of the labeling on the side of
the tire makes it easier to identify and
choose the right tires.
Tire size
Speed code letter
T = up to 118 mph/190 km/h
H = up to 131 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
Tire Identification Number
Tires with DOT codes meet the guidelines
of the U.S. Department of Transport.
DOT code:
Tire age
The tire's date of manufacture is indicated
on the sidewall:
DOT ... 3603 indicates that a tire was man-
ufactured in week 36 of the year 2003.
BMW recommends that you replace all
tires after 6 years at the latest, indepen-
dently of the fact that tires can reach an age
of 10 years.
Uniform Tire Quality Grading
Quality grades can be found where appli-
cable on the tire sidewall between tread
shoulder and maximum section width.
For example:
Tread wear 200 Traction AA
Temperature A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
All passenger car tires must conform
to Federal Safety Requirements in
addition to these grades.<
Treadwear
The treadwear grade is a comparative rat-
ing based on the wear rate of the tire when
tested under controlled conditions on a
specified government test course.
For example, a tire graded 150 would wear
one and one-half (1 g) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly from
the norm due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Traction
The traction grades, from highest to lowest,
are AA, A, B, and C.
Those grades represent the tire's ability to
stop on wet pavement as measured under
controlled conditions on specified govern-
ment test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
The traction grade assigned to this
tire is based on straight-ahead brak-
ing traction tests, and does not include
acceleration, cornering, hydroplaning, or
peak traction characteristics.<
Temperature
The temperature grades are A Ð the
highest Ð B, and C, representing the tire's e.g.
Nominal width
in mm
Aspect ratio in X
Radial type
Rim diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)
205/60 R1591W
e.g.
Manufacturer code
for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 3603

Everything from A to Z
126 Starting assistance, refer to
Jump-starting 108
Starting difficulties
Ð temperature 38
Starting-off assistance,
DSC 50
Starting the engine 38
Startup difficulties
Ð jump-starting 108
Status of this Owner's
Manual at time of
printing 5
Steering lock 37
Steering wheel 10, 14
Ð adjustment 31
Ð lock 37
Steering wheel heater 31
Steering wheel with
buttons 14
Steptronic 39
Storage compartments 68
Storage package 68
Storage package nets 68
Storage space, refer to
Cargo area 71
Storing seat position, refer
to Seat and mirror
memory 29
Storing the seat
adjustment 29
Straps, refer to Loading 78
Stroke, refer to Engine
data 114
Supply reservoir cleaning
systems 94
Switches, refer to
Cockpit 10
Switching off the engine 38
Symbols 4
T
Table of contents 3
Tachometer 45
Tailgate
Ð closing 21
Ð emergency operation 21
Ð opening from the
outside 21
Ð remote control 19Tailgate lamp
Ð bulb replacement 103
Tail lamps
Ð bulb replacement 102
Ð indicator lamp 57
Tank capacity 117
Technical modifications 6
Telephone, refer to
separate Owner's Manual
Temperature
Ð air conditioner 61
Ð automatic climate
control 64
Temperature, tires 88
Temperature display
Ð ice warning 47
Ð outside temperature 47
Ð setting the units 47
Temperature gauge 45
Thigh support
adjustment 28, 29
Three-point belt 30
Tightening torque 105
Tilt alarm sensor 25
Ð switching off 25
Tilt function, passenger-
side mirror 32
Tire inflation pressures 86
Tire pressure monitoring,
refer to Flat Tire
Monitor 53
Tires
Ð age 88
Ð break-in procedure 76
Ð changing 89
Ð condition 89
Ð DOT Quality Grades 88
Ð flat 103
Ð inflation pressure 86, 87
Ð replacing 89
Ð storage 90
Ð temperature 88
Ð traction 88
Ð treadwear 88
Ð Uniform Tire Quality
Grading 89
Ð wear indicators, refer to
Tire tread/damage 89
Ð wheel change 103
Tools, refer to Onboard tool
kit 99Torque of lug bolts 105
Tow bar 109
Tow fittings 109
Towing 109
Towing the vehicle 109
Tow rope 109
Tow sockets for tow
fitting 109
Tow-starting 109
Track width, refer to
Dimensions 115
Traction 88
Traction control
Ð DSC 50
Trailer loads 116
Transmission 39
Ð automatic transmission
with Steptronic 39
Ð manual transmission 39
Transmission lockout, refer
to P Parking 40
Transmission
malfunction 41
Transporting children 34
Transporting children
safely 34
Tread depth, refer to Tire
tread 89
Treadwear 88
Trip-distance counter, refer
to Trip odometer 45
Trip odometer 45
Trunk, refer to Cargo
area 71
Trunk lid, refer to
Tailgate 21
Turning circle, refer to
Dimensions 115
Turn signal indicators 41
Ð bulb replacement 101
Turn signal indicators, side
Ð bulb replacement 101
U
Underbody protection,
refer to Caring for your
vehicle brochure
Uniform Tire Quality
Grading 89