tire pressure BMW X3 3.0I 2004 E83 Owner's Manual

Reference
At a glance
Controls
Driving tips
Mobility
53
available. See your BMW Sports Activity
Vehicle Center to have the system
repaired.
Flat Tire Monitor
The concept
The Flat Tire Monitor keeps track of the
inflation pressures in the four fitted tires as
you drive. The system provides an alert
whenever the inflation pressure drops sig-
nificantly in relation to the pressure another
tire.
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 cer-
tain speed ratios.
Functional requirement
So that the Flat Tire Monitor can learn the
correct inflation pressure, please perform
the following:
1.Check the inflation pressures in all tires
2.Compare with the inflation pressure
table on page 87 and correct if neces-
sary
3.Initialize the system.
Limits of the system
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 slip-
pery road surfaces
>In the case of performance-oriented
driving: slip on the drive wheels, high
lateral acceleration
>False alarms and undetected loss of
pressure may occur when you are driv-
ing with snow chains fitted>When driving with a compact wheel, the
Flat Tire Monitor cannot operate.
Initializing the system
Perform the initialization immediately
every time you correct the inflation
pressure, change a tire or change a wheel
or all wheels. A drive is required for this
purpose.<
1.Before the start of driving, start the
engine, but do not drive off
2.Press the button until the yellow indica-
tor lamp in the instrument cluster lights
up for a few seconds
3.Drive off.
It takes a few minutes until the Flat Tire
Monitor can detect and indicated a flat tire.
Do not initialize the system when driv-
ing with snow chains or with a com-
pact wheel.<
Flat tire
Indicator lamp
The symbol in the instrument clus-
ter lights up in yellow.
1.Reduce speed and stop the vehicle
carefully. Avoid sudden braking and
steering maneuvers
2.Identify damaged tire
If identification is not possible,
contact your BMW Sports Activity
Vehicle Center.<
3.Replace the damaged tire, refer to
Changing a wheel on page 103.

Reference
At a glance
Controls
Driving tips
Mobility
77
to a fire, and with it the risk of serious prop-
erty damage as well as personal injury.<
Parking the vehicle
Condensation forms in the air conditioner
system during operation, and then exits
under the vehicle. Traces of condensed
water under the vehicle are thus normal.
Before driving into the car wash
Fold in the exterior mirrors, refer to
page 31, as otherwise they could be dam-
aged due to the width of the vehicle.
Deactivate the rain sensor as otherwise
damage could result from undesired wiper
activation, refer to page 42.
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a
wedge of water can form between tires and
road surface. This phenomenon is referred
to as hydroplaning, and is characterized by
a partial or complete loss of contact
between tires and road surface, ultimately
undermining your ability to steer and brake
the vehicle.<
Driving through water
Do not drive through water on the
road if it is deeper than 20 in/50 cm,
and then only at walking speed. Otherwise,
the vehicle's engine, the electrical systems
and the transmission may be damaged.<
Safe braking
Emergency stops
The best way to brake is to apply maximum
pressure to the brake pedal during emer-
gency Ð panic stops. Since the vehicle
maintains steering responsiveness, you
can nevertheless avoid possible obstacles
with a minimum of steering effort.
Pulsation at the brake pedal combined with
sounds from the hydraulic circuits indicates
to the driver that ABS is in its active mode. Do not drive with your foot resting on
the brake pedal. Otherwise, even light
but consistent pedal pressure can lead to
high temperatures, brake wear and possi-
bly even brake failure.<
Wet conditions
While driving in wet conditions and in
heavy rain, it is a good idea to apply light
pressure to the brake pedal every few
miles. Watch traffic conditions to ensure
that this maneuver does not endanger
other road users. The heat which is gener-
ated by the brake applications helps to dry
the brake pads and rotors. The required
braking force will then be available when
you need it.
On a grade
You can retain full and unimpaired braking
efficiency by downshifting to a gear in
which only minimal brake applications are
needed when descending long or steep
downhill stretches.
You can further enhance the engine's brak-
ing effect by selecting a lower gear in the
automatic transmission's manual mode,
downshifting as far as first gear on
extremely steep stretches, refer to
page 38. This strategy helps you avoid
placing excessive loads on the brake sys-
tem.
During slower downhill driving, use the Hill
Descent Control HDC, refer to page 51.
Never drive with the clutch pressed,
with the transmission in Neutral or
with the engine switched off, as otherwise
there is no engine braking when the trans-
mission is in Neutral, and no power-assist
for brakes and steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
accelerator and brake pedals and obstruct
their movement.<
Corrosion
When the vehicle is driven only occasion-
ally, during extended periods when the
vehicle is not used at all, and in operating
conditions where brake applications are

Things to remember when driving
78 less frequent, there is an increased ten-
dency for corrosion to form on rotors, while
contaminants accumulate on the brake
pads. This occurs because the minimal
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 respond with a pul-
sating effect that even extended applica-
tion will fail to cure.
Cargo loading
To avoid loading the tires beyond
their approved carrying capacity,
never overload the vehicle. Overloading
can lead to overheating and increases the
rate at which damage develops inside the
tires. The ultimate result can assume the
form of a sudden air loss.<
Determining the load limit
1.Locate the following statement on the
driver's door pillar:
The combined weight of occu-
pants and cargo should never
exceed XXX lbs or YYY kg. Failure to
observe this can compromise your
vehicle's driving stability and cause
vehicle damage.<
2.Determine the combined weight of the
driver and passengers that will be riding
in your vehicle
3.Subtract the combined weight of the
driver and passengers from XXX
pounds or YYY kilograms4.The resulting figure equals the available
amount of cargo and luggage load
capacity.
For example, if the XXX amount equals
1,400 lbs and there will be five 150-lbs
passengers in your vehicle, the amount
of available cargo and luggage load
capacity is 650 lbs:
1,400 lbs minus 750 lbs = 650 lbs
5.Determine the combined weight of lug-
gage and cargo being loaded on the
vehicle. That weight should never
exceed the available cargo and luggage
load capacity calculated in Step 4
6.If your vehicle will be towing a trailer,
part of the load from your trailer will be
transferred to your vehicle. Consult the
manual for transporting a trailer to
determine how this may reduce the
available cargo and luggage load
capacity of your vehicle.
Load
The permitted load is the total of the weight
of occupants and cargo/luggage. The
greater the weight of occupants, the less
cargo/luggage can be transported.

Wheels and tires
86
Wheels and tires
Tire inflation pressure
Information for your safety
It is not merely the tire's service life, but
also driving comfort and Ð to a great extent
Ð driving safety that depend on the condi-
tion of the tires and the maintenance of the
specified tire pressure.
Check the tire inflation pressure regu-
larly and correct it if necessary,
including compact wheel: at least every
two weeks and before beginning a longer
trip. If you fail to observe this precaution
you may be driving on tires with incorrect
tire pressures, a condition that cannot only
compromise your vehicle's driving stability,
but also lead to tire damage and the risk of
an accident.
Do not drive with a depressurized, i.e. flat
tire. A flat tire will seriously impair your
vehicle's handling and braking response.
Attempts to drive on a flat tire can lead to
loss of control over the vehicle.<
Checking the pressure
Only check tire inflation pressure when the
tires are cold. That means after a maximum
of 1.25 miles/2 km driving or when the
vehicle has been parked for at least 2
hours. When tires are warm, the tire infla-
tion pressure increases.
After correcting the inflation pressure(s),
always reinitialize the Flat Tire Monitor,
refer to page 53.
Checking inflation pressure
The inflation pressures for your standard
tires can be seen on the door pillar when
you open the driver's door.
After correcting the inflation pres-
sure(s), always reinitialize the Flat Tire
Monitor, refer to page 53.<
Inflation pressure for other tire sizes
The table below provides all the correct
inflation pressures for the specified tire
sizes at ambient temperature.
For correct identification of the right
tire inflation pressure for your tires,
observe the specifications for the corre-
sponding tire size.<

Reference
At a glance
Controls
Driving tips
Mobility
87
X3 2.5i/3.0i
Tire sizePressure specifications in psi/kPa
All pressure specifications in the
table are indicated in psi / kilopas-
cal with cold tires Ð cold = ambient
temperature
215/60 R 17 96 H M+S
215/60 R 17 96 Q, T, H M+S
235/50 R 18 97 H M+S
235/50 R 18 97 V32/220 35/240 35/240 41/280
235/55 R 17 99 H M+S
235/55 R 17 99 Q, T, H M+S29/200 32/220 32/220 38/260
Front: 235/50 R 18 97 V
Rear: 255/45 R 18 99 V32/220
ÐÐ
32/22035/240
ÐÐ
38/260
Front: 235/45 R 19 95W
Rear: 255/40 R 19 96W32/220
ÐÐ
35/24035/240
ÐÐ
41/280
Compact wheel
T 135/90 R 17 104 M61/420
More details on the permitted load and weights can be found on page 116.

Reference
At a glance
Controls
Driving tips
Mobility
89
resistance to the generation of heat and its
ability to dissipate heat when tested under
controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. The grade C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A repre-
sent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive load-
ing, either separately or in combination,
can cause heat buildup and possible tire
failure.<
M+S
Winter and all-season tires.
These have better winter properties than
summer tires.
Tire condition
Inspect your tires frequently for treadwear,
signs of damage and for foreign objects
lodged in the tread. Check the tread pat-
tern depth.
Tire tread
The tread depth should not drop below
0.12 in/3 mm, although, for example, Euro-
pean legislation only specifies a minimum
tread depth of 0.063 in/1.6 mm. At tread
depths below 0.12 in/3 mm, there is an
increased risk of high-speed hydroplaning,
even when only small amounts of water are
present on the road surface.
As winter tires display a noticeable loss in
their ability to cope with cold-weather driv-
ing conditions once the tread wears to
below 0.16 in/4 mm, to ensure continued safety you should always have such tires
replaced.
Wear indicators at the tread-groove base,
refer to arrow, are distributed over the tire's
circumference and are marked on the tire
sidewall with TWI Ð Tread Wear Indicator.
At a tread depth of 0.063 in/1.6 mm these
indicators, signal that the tires have
reached the legally permissible wear limit.
Tire damage
Unusual vibrations encountered dur-
ing normal vehicle operation can indi-
cate tire failure or some other vehicle
defect. This can, for example, be caused by
driving over curbs. These kinds of prob-
lems may also be signaled by other
changes in vehicle response, such as a
strong tendency to pull to the left or right.
Should this occur, respond by immediately
reducing your speed. Proceed carefully to
the nearest BMW Sports Activity Vehicle
Center or professional tire center, or have
the vehicle towed in to have it, its wheels
and tires inspected.
Tire damage, extending to sudden and
complete loss of pressure in extreme
cases, can pose a potentially lethal safety
hazard for the vehicle's occupants and
other road users alike.<
Replacing wheels/tires
Unprofessional attempts by laymen to
service tires can lead to damage and
accidents.
Have this work performed by skilled pro-
fessionals only. All BMW Sports Activity
Vehicle Centers will be happy to help you

Wheels and tires
90 with specialized knowledge and corre-
sponding equipment.<
The correct wheel and tire combination
affects various systems whose function
would otherwise be impaired, e.g. ABS,
DSC or xDrive.
Have the wheel and tire assemblies bal-
anced every time either a wheel or a tire is
replaced.
BMW does not recommend the use of
retreaded tires, as otherwise driving
safety may be reduced. Possible variations
in the design and the age Ð which could be
substantial Ð of the carcasses can lead to
unusually rapid wear.<
The right wheels and tires
BMW recommends that you use only
wheel and tire combinations that
BMW has tested and approved for your
particular vehicle. Variations in factors such
as manufacturing tolerances mean that
even wheels and tires with identical official
size ratings could actually have different
dimensions than the approved units Ð these
differences could lead to body contact, and
with it the risk of severe accidents. If non-
approved wheels and tires are used, BMW
cannot evaluate their suitability, and there-
fore cannot be held liable for driving
safety.<
To maintain good handling and vehicle
response, use only tires of a single tread
configuration from a single manufacturer.
After a flat tire, always remember to have
the specified wheel and tire combination
remounted on the vehicle as soon as pos-
sible.
Recommended tire brands
BMW tests certain tire brands for each tire
size, classifies them as road-safe and
approves them. You can obtain a list of
these from your BMW Sports Activity Vehi-
cle Center. Observe any country-specific
regulations, e.g. on making a correspond-
ing entry in the vehicle documents.
The factory-mounted tires have been spe-
cially selected to provide optimized perfor-mance when installed on your vehicle; if
properly cared for, they will provide a com-
bination of safety and excellent ride com-
fort.
Special characteristics of winter
tires
BMW recommends winter tires for use in
cold winter driving conditions. Although all-
season M+S tires provide better winter
traction than summer tires, they generally
fail to provide the same levels of cold-
weather performance as winter tires.
When switching to winter tires, observe the
descriptions at Tire condition and Replac-
ing wheels/tires, refer to page 89.
Observing speed ratings
Never exceed the maximum speed for
which the winter tires are rated.
Unprofessional attempts by laymen to ser-
vice tires can lead to damage and acci-
dents. Have this work performed by skilled
professionals only. The technicians at your
BMW Sports Activity Vehicle Center will be
glad to assist you with the required profes-
sional knowledge and specialized equip-
ment.<
Storage
Store wheels or tires in a cool, dry place,
protecting them against light whenever
possible. Protect the tires against contact
with oil, grease and fuel.
Do not exceed the maximum tire inflation
pressure specified on the side of the tire.
Snow chains*
Do not exceed a vehicle speed of
30 mph/50 km/h with snow chains
mounted.<
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

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.<

Reference
At a glance
Controls
Driving tips
Mobility
119
Everything from A to Z
Index
A
A/C operation
Ð air conditioner 60
Ð automatic climate
control 63
ABS Antilock Brake
System 50
Ð indicator lamp 50
Accessories 6
Activated-charcoal filter 65
Adaptive Head Light 57
Adding engine oil 95
Adjusting seats 27
Ð electric 29
Ð mechanical 28
Air, drying, refer to A/C
operation 61, 64
Airbags 54
Ð deactivating 34
Ð indicator lamp 55
Ð sitting safely 27
Air circulation, refer to
Recirculated-air
mode 61, 64
Air conditioner 60, 63
Air distribution
Ð air conditioner 61
Ð automatic climate
control 64
Airing, refer to
Ventilation 61, 65
Air outlets, refer to
Ventilation 61, 65
Air pressure, refer to Tire
inflation pressure 86
Air supply
Ð air conditioner 61
Ð automatic climate
control 64
Air vents, refer to
Ventilation 61, 65
AKI, refer to Fuel
specifications 85Alarm system 24
Ð avoiding unintentional
alarms 25
Anchorages 73
Antifreeze
Ð coolant 95
Ð washer fluid 94
Antifreeze protection
Ð coolant 95
Anti-theft alarm system 18
Ð refer to Alarm system 24
Anti-trapping mechanism
Ð panorama glass roof 24
Ð power windows 22
Approved engine oils 95
Approved gross vehicle
weight 116
Armrest 68
Ð front 68
Ð rear 68
Artificial leather, refer to
Caring for your vehicle
brochure
Ashtray 69
Ð front 69
Ð rear 69
AUC Automatic
recirculated-air
control 64
Automatic
Ð air distribution 64
Ð air supply 64
Automatic car wash, refer
to Caring for your vehicle
brochure
Automatic climate
control 63
Automatic cruise control 43
Automatic curb monitor 32
Automatic headlamp
control 57
Automatic program, refer to
automatic air-
distribution 64Automatic rear window
cleaning 43
Automatic recirculated-air
control AUC 64
Automatic transmission
Ð malfunction 41
Automatic transmission
with Steptronic 39
Ð indicator lamp 41
Ð interlock 37
Ð selector lever interlock 40
Ð shiftlock 40
Average fuel
consumption 48
Average speed 48
Avoiding unintentional
alarms 25
Axle load, permitted 116
B
Backrests, refer to
Adjusting seats 28
Backup lamps 39
Ð replacing bulbs 102
Bad roads 80
Bar, towing 109
Batteries, disposal 106
Battery 105
Ð indicator lamp 12, 105
Ð jump-starting 108
Belts, refer to Safety
belts 30
Beverage holders 67
Black ice, refer to Ice
warning 47
Blower
Ð air conditioner 61
Ð automatic climate
control 64
BMW maintenance
system 97
BMW sports seat 28
Bore, refer to Engine
data 114

Reference
At a glance
Controls
Driving tips
Mobility
123
High beams
Ð bulb replacement 100
Ð headlamp flasher 58
Ð indicator lamp 12
High Performance
Synthetic Oil 95
Hill-climbing ability, refer to
Driving on bad roads 80
Hill descent assistance,
refer to HDC 51
Hill Descent Control
HDC 51
Hills 77
Holder for beverage
cans 67
Horn 10
Hydraulic Brake Assistant,
refer to DBC 50
Hydroplaning 77
I
Ice warning 47
Ignition 37
Ignition key 18
Ignition lock 37
Imprint 2
Indicator/warning lamp
Ð airbags 55
Ð alarm system 25
Ð brake system 96
Ð DSC 51
Ð Flat Tire Monitor 53
Ð fog lamps 58
Ð reserve 45
Ð safety belt warning 30
Indicator/warning lamps 12
Individual settings, refer to
Vehicle Memory, Key
Memory 33
Inflation pressure, tires 86
Inflation pressure
monitoring, refer to Flat
Tire Monitor 53
Instrument cluster 10, 11
Instrument illumination 58
Instrument lighting 58
Integrated universal remote
control 66
Interior lamps 58Interior mirror
Ð automatic dimming
feature 32
Interior motion
sensor 22, 25
Ð switching off 19
Interior rearview mirror 32
Interlock, refer to Ignition
lock 37
Intermittent
Ð operation, wipers 41
J
Jacking points 104
Jumping, refer to Jump-
starting 108
Jump-starting 108
K
Key Memory 33
Keys 18
Kickdown 40
L
Lamps and bulbs 99
Lashing eyes, refer to
Securing the load 79
Leather care, refer to
Caring for your vehicle
brochure
LEDs light-emitting
diodes 103
License plate lamp
Ð bulb replacement 102
Lifting handle, compact
wheel 104
Light-alloy wheels, care,
refer to Caring for your
vehicle brochure
Light-emitting diodes
LEDs 103
Lighter 69
Lighter socket 69
Lighting of instruments 58
Lighting of the instruments,
refer to Instrument
lighting 58Lights, refer to Parking
lamps/low beams 57
Lights on warning 57
Load, refer to Loading 78
Loading
Ð securing the load 79
Ð stowing cargo 79
Ð vehicle 78
Loading area
Ð lid, refer to Tailgate 21
Load securing devices 79
Locking
Ð from inside 20
Ð from outside 18
Locking and unlocking
doors
Ð from inside 20
Ð from outside 18
Longlife oils
Ð approved oils 95
Low beams 57
Ð automatic 57
Ð bulb replacement 100
Ð indicator lamp 57
Low-fuel warning light,
refer to Fuel gauge 45
Lug bolts 104
Luggage compartment,
refer to Cargo area
Luggage rack, refer to
Roof-mounted luggage
rack 79
Lumbar support 29
M
Maintenance 97
Maintenance system,
BMW 97
Malfunction in automatic
transmission system 41
Manual operation
Ð doors 20
Ð driver's door 20
Ð fuel filler door 84
Ð glass roof 24
Ð panorama glass roof 24
Ð tailgate 21
Manual transmission 39
Master keys with remote
control 18