torque BMW X3 3.0I 2004 E83 Owner's Manual

Technology for comfort, convenience and safety
50
Limits of the system
Even with PDC, final responsibility for
estimating the distance between the
vehicle and any obstructions always
remains with the driver. Even when sensors
are involved, there is a blind spot in which
objects cannot be detected. The system is
also subject to the physical limits that apply
to all forms of ultrasonic measurement,
such as those encountered with tow bars
and trailer couplings, or thin and wedge-
shaped objects etc. Low objects already
displayed, e.g. a curb, can also disappear
from the detection area of the sensors
again before a continuous tone sounds.
Loud sources of sound, inside and outside
the vehicle, could drown out the PDC sig-
nal tone.<
Keep the sensors clean and free of ice
or snow in order to ensure that they
will continue to operate effectively.
Do not apply high pressure spray to the
sensors for a prolonged period of time.
Keep the spray at least 4 in/10 cm away
from the sensors.<
Driving stability control
systems
Your BMW is equipped with an extended
array of systems designed to enhance and
maintain vehicle stability under extreme
conditions. The following section describes
these functions based on ABS, DSC, HDC
and xDrive.
Antilock Brake System ABS
ABS enhances active safety by preventing
the wheels from locking under braking. The
vehicle continues to be steerable during
hard braking.
ABS also includes Electronic brake-force
distribution EBV.
Safe braking, refer to page 77.
Electronic brake-force distribution
EBV
EBV controls the brake system's applica-
tion pressure at the rear wheels to ensure
stable deceleration.
Dynamic Brake Control DBC
The Dynamic Brake Control actively sup-
ports the driver in dangerous braking situa-
tions. Quickly pumping the brake pedal
increases the braking effect with low pedal
pressure so that the shortest possible
braking distance is achieved. This system
exploits all of the benefits provided by ABS.
Do not reduce the pressure on the brake
pedal for the duration of the brake applica-
tion. DBC is deactivated when you release
the brake pedal.
Dynamic Stability Control DSC
The concept
DSC maintains vehicle stability, even in
critical driving situations.
The DSC is operational every time you start
the engine.
The system optimizes the driving stability
during acceleration and when starting from
a standstill. The system recognizes any
tendency for the vehicle to assume an
unstable attitude such as oversteer or
understeer; it then counteracts this ten-
dency with a combination of graduated
reductions in engine torque and selective
braking intervention at individual wheels.
DSC provides optimal stability within the
limits defined by the laws of physics.
The laws of physics cannot be
repealed, even with DSC. An appro-
priate driving style always remains the
responsibility of the driver. Avoid using the
additional safety margin provided by the
system as an excuse for taking unneces-
sary risks.
Do not make any modifications to the DSC
system. Never allow anyone other than
authorized professional technicians to
carry out service or repairs on the system.<

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.

Reference
At a glance
Controls
Driving tips
Mobility
105
Mounting compact 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. Clean the lug bolts
3.Position the new wheel or compact
wheel. Secure the wheel by turning at
least two lug bolts into opposite bolt
holes
4.Screw in the remaining lug bolts.
Tighten all the bolts securely in a diag-
onal pattern
5.Lower the jack and remove it from
beneath the vehicle
6.Tighten the lug bolts in a diagonal pat-
tern
7.Check and correct the tire inflation
pressure at the earliest opportunity.
Protect valve stems and valve stem
seal caps against dirt and contamina-
tion. Dirt in valve stems is a frequent source
of gradual air loss.<
After mounting the compact wheel or cor-
recting the inflation pressure, reinitialize
the Flat Tire Monitor, refer to page 53.
The vehicle jack is designed for
changing wheels only. Do not attempt
to raise another vehicle model with it or to
raise any load of any kind. To do so could
cause accidents and personal injury.
To ensure safety, always have the lug bolts
checked with a calibrated torque wrench to
ensure that they are tightened to the spec-
ified torque of 101 lb ft/140 Nm as soon as
possible.<
Stow the defective wheel in the luggage
compartment.
When you mount wheels other than Genu-
ine BMW light-alloy wheels, different lug
bolts may also be required.
Replace the defective tire as soon as pos-
sible and have the new wheel/tire bal-
anced.
Driving with the compact wheel
Drive reservedly and do not exceed a
speed of 50 mph/80 km/h. Do not
deactivate DSC, as otherwise unstable
driving conditions may result.<
The driving characteristics change, for
example reduced track stability on braking,
extended braking distance, and altered
self-steering characteristics in the limit
range. In conjunction with winter tires,
these characteristics are more pro-
nounced.
Only one compact wheel may be
mounted. You should re-equipping to
wheels and tires of the original size as
quickly as possible.<
Battery
Battery care
The battery is 100% maintenance-free, i.e.,
the electrolyte will last for the life of the bat-
tery when the vehicle is operated in a tem-
perate climate.
Please contact your BMW Sports
Activity Vehicle Center with any ques-
tions concerning the battery.<
Do not disconnect the battery when
the engine is running. If you do so, the
ensuing voltage surge will damage the
vehicle's onboard electronics.<
Indicator lamp
The battery charge-current indica-
tor lamp lights up:
The battery is no longer being
charged. There is a defect on the alternator
V-belt or charge current circuit of the alter-
nator. Contact the nearest BMW Sports
Activity Vehicle Center.
Do not continue driving if the V-belt is
defective. The engine could be dam-
aged due to overheating.
Moreover, an increased amount of force is
required for steering if the onboard supply
voltage falls dramatically.<

Technical data
114
Technical data
Engine specifications
An engine performance test is authorized only on an appropriate chassis dynamometer.
BMW X3 2.5iBMW X3 3.0i
Displacement
Number of cylinderscu in/cmm152.2/2,494
6181.8/2,979
6
Maximum output
at engine speedhp
rpm184
6,000225
5,900
Maximum torque
at engine speedlb ft/Nm
rpm175/237
3,500214/290
3,500
Compression ratioe10.5 10.2
Stroke
Borein/mm
in/mm2.95/75
3.31/843.53/89.6
3.31/84
Fuel-injection system Digital electronic engine-management system DME

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