service BMW X3 3.0SI 2008 User Guide

Wheels and tires
94
Wheels and tires
Tire inflation pressure
Information for your safety
The condition of the tires and the maintenance
of the specified tire pressure are crucial not only
to the tire's service life, but also to driving com-
fort and most importantly, driving safety.
Checking pressure
Only check tire inflation pressure when the tires
are cold. This 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 inflation pressure increases.
Check the tire inflation pressure regularly
and correct it as needed, even on the
compact wheel: at least twice a month and
before starting long trips. If you fail to observe
this precaution, you may be driving on tires with
incorrect tire pressures, a condition that can not
only compromise your vehicle's driving stability,
but also lead to tire damage and the risk of an
accident.
Do not drive with deflated, i.e. flat tires. 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.<
After correcting the tire inflation pressure,
reinitialize the Flat Tire Monitor
* or
reset the Tire Pressure Monitor
*, refer to
pages54, 55.<
Pressure specifications
The table on the next page provides all the cor-
rect inflation pressures for the specified tire
sizes at ambient temperature.
The inflation pressures in the table apply
to BMW-approved tire sizes and recom-
mended tire brands. Your BMW Sports Activity
Vehicle Center will be glad to supply this infor-
mation. tion pressure for your tires, please note the fol-
lowing:
>Tire size for your vehicle
>Load status
>Maximum permissible driving speed
Tire inflation pressures for speeds
up to 100 mph/160 km/h
For normal driving at speeds of up to 100 mph/
160 km/h and to achieve optimum driving com-
fort, take note of the tire inflation pressures
listed on the following page in the column for
speeds up to max. 100 mph/160 km/h and
adjust your tire pressure as needed.
These tire inflation pressures are also listed on
the door pillar and can be seen with the driver's
door open.
The maximum permissible speed for
these tire inflation pressures is 100 mph/
160 km/h. Do not exceed this speed; failure to
heed this limit can lead to tire damage and acci-
dents.<
Tire inflation pressures for speeds
above 100 mph/160 km/h
In order to drive at maximum speeds
above 100 mph/160 km/h, take note of
the tire inflation pressures listed in the column
for speeds above 100 mph/160 km/h in the
table on the following page and adjust your tire
pressure as needed. Failure to due so can lead
to tire damage and accidents.<

Wheels and tires
96
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
Q = up to 105 mph/160 km/h
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 Transportation.
DOT code:
Tire age
The tire's date of manufacture is indicated on
the sidewall:
DOT ... 2806 indicates that a tire was manufac-
tured in week 28 of the year 2006.BMW recommends that you replace all tires
after 6 years at most, even if some tires may last
for 10 years.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder and
maximum section width.
For example:
Tread wear 200 Traction AA
Temperature A
DOT Quality Grades
Tread wear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to
Federal Safety Requirements in addition
to these grades.<
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one
and one-half (1γ) times as well on the govern-
ment 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 varia-
tions in driving habits, service practices, and dif-
ferences in road characteristics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
These grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test sur-
faces 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 braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning, or peak traction charac-
teristics.< e.g. 235/50 R 18 97 V
Nominal width in mm
Cross-sectional
relationship in Ξ
Radial tire code
Rim diameter in inches
Load rating,
not for ZR tires
Speed rating, before R on ZR tires
e.g. DOT xxxx xxx 3005
Manufacturer code
for tire make
Tire size and tire design
Tire age

Wheels and tires
98 age and related safety hazards. Make sure that
the new wheels are balanced.<
Retreaded tires
BMW does not recommend the use of
retreaded tires; otherwise, driving safety
may be reduced. The causes for this include the
possibly different tire casing structures and the
often wide variations in their age, which can
result in a limited service life.<
Correct 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 manufac-
turing tolerances mean that even wheels and
tires with identical official size ratings could
actually have different dimensions than the
approved units – these differences could lead to
body contact and with it, the risk of severe acci-
dents. If non-approved wheels and tires are
used, BMW cannot evaluate their suitability,
and therefore cannot be held liable for driving
safety.<
You can ask your BMW Sports Activity Vehicle
Center for the correct wheel-and-tire combina-
tion.
The correct wheel-and-tire combination affects
various systems whose function would other-
wise be impaired, e.g. ABS, DSC or xDrive.
To maintain good handling and vehicle
response, use only tires of a single tread config-
uration from a single manufacturer. After tire
damage, always remember to have the original
wheel and tire combination remounted on the
vehicle as soon as possible.
Wheels equipped with electronics for
TPM Tire Pressure Monitor
When installing new tires or when changing
from summer tires to winter tires or vice versa,
only use wheels equipped with TPM electron-
ics; otherwise, the Tire Pressure Monitor can-
not detect a flat tire, refer to page55. Your
BMW Sports Activity Vehicle Center will be
happy to advise you in this regard.
Recommended tire brands
BMW recommends particular tire brands for
each tire size. You will recognize them by the
clearly visible BMW identification on the tire
sidewall.
With proper use, these tires meet the highest
standards for safety and handling characteris-
tics.
Special characteristics of winter tires
BMW recommends winter tires for use in cold
winter driving conditions. Although all-season
M+S tires do provide better winter traction than
summer tires, they generally fail to provide the
same levels of cold-weather performance as
winter tires.
Observing speed ratings
Never exceed the maximum speed for
which the winter tires are rated.<
Storage
Store wheels or tires in a cool, dry place, pro-
tecting them from light whenever possible. Pro-
tect the tires from contact with oil, grease and
fuel. Do not exceed the maximum tire inflation
pressure indicated on the side wall of the tire.
Changing wheels from one axle to
another
BMW does not recommend changing the front
wheels to the back or vice versa as this can
impair handling characteristics.

Under the hood
100
Under the hood
Never attempt to perform any service or
repair operations on your vehicle without
the required professional technical training. If
you are not familiar with the regulations to be
observed, have work on your vehicle carried out
only by your BMW Sports Activity Vehicle Cen-
ter or at a workshop that works according to
BMW repair procedures with appropriately
trained personnel. If this work is not carried out
properly, there is a danger of subsequent dam-
age and related safety hazards.<
Hood
Unlocking
Pull the lever located under the left side of the
instrument cluster.
Opening
To avoid causing damage, make sure that
wiper arms are resting against the wind-
shield before opening the hood.<
Press the release handle and open the hood.
Closing
Close the hood with force by allowing it to fall
from a height of approx. 1 ft/30 cm. It must
engage audibly.
Avoid injuries by making sure that the
hood's closing region is clear and unob-
structed.
If you see any signs that the hood is not com-
pletely closed while driving your vehicle, you
should stop at once and close it securely.<

Reference
At a glance
Controls
Driving tips
Mobility
103
3Oil level at minimum
A t y o u r e a rl ie s t o p p ortunity, add 1 US quart/
1 l i t e r e n g i n e o i l , a l s o r e f e r t o A d d i n g e n g i n e
oil.
4Oil level too high
Have vehicle checked immediately;
otherwise, overfilled oil can lead to
engine damage.<
5Oil level sensor has failed
It is not possible to take a current or mean-
ingful measurement.
Do not add engine oil. It is possible to con-
tinue driving. Have the system checked as
soon as possible.
Adding engine oil
Add the maximum quantity of 1 US quart/1 liter
of oil only after the warning lamp in the instru-
ment cluster lights up, refer to page102, or
when the oil level measurement "+1.0 " appears
on the display.
Add oil within the next 125 miles/200 km;
otherwise, engine damage could result.<
Keep oil, grease, etc. out of reach of chil-
dren and heed warnings on the contain-
ers. Otherwise, you could endanger your
health.<
Oil change
Have the oil changed only by your BMW Sports
Activity Vehicle Center or a workshop that
works according to BMW repair procedures
with correspondingly trained personnel.
Approved engine oils
The quality of the engine oil selected has critical
significance for the operation and service life of
an engine. BMW continuously approves spe-
cific oils after confirming their suitability for use
in its vehicles with extensive testing.
Only use approved BMW High Performance
Synthetic Oil.
If you are unable to obtain BMW High Perfor-
mance Synthetic Oil, you can add small
amounts of another synthetic oil in between oil
changes. Only use oils with the API SH specifi-
cation or higher.
Ask your BMW Sports Activity Vehicle
Center for more details concerning BMW
High Performance Synthetic Oil or other
approved synthetic oils.<
You can also call BMW of North America at
1-800-831-1117 or visit the website
www.bmwusa.com to obtain this information.
BMW engines are designed to operate
without additives, and their use could
even lead to damage in some cases.<
Viscosity classes
Viscosity is the oil flow rating as defined in
SAE classes.
The selection of the correct SAE class depends
on the climate conditions in the area where you
typically drive your BMW.
Approved oils belong to SAE classes
5W-40 and 5W-30.<
These oils can be used for driving in all ambient
temperatures.

Reference
At a glance
Controls
Driving tips
Mobility
105
Maintenance
BMW maintenance system
The BMW maintenance system supports the
preservation of the road and operating safety of
your BMW.
Regular maintenance is not only required for
the safety of the vehicle, it also improves the
resale value.
Service Interval Display
The BMW maintenance system takes the driv-
ing conditions of the vehicle into account when
determining service intervals:
From the maintenance standpoint,
62,000 miles/100,000 km accumulated in
short-distance urban driving are not the equiva-
lent of the same distance covered at moderate
speeds in long-distance highway travel.
The BMW maintenance system is divided into
engine oil service and Inspections I and II.
Determining the maintenance intervals accord-
ing to the actual loads on the vehicle covers
practically every kind of operating situation.
However, even those who drive only short dis-
tances, significantly less than 6,200 miles/
10,000 km annually, should have the engine oil
changed at least every 2 years since oil deterio-
rates over time, regardless of use.
Brake fluid is hygroscopic: it absorbs
moisture from the atmosphere over the
course of time. To ensure that the brake system
continues to provide safe and reliable perfor-
mance, remember to have the brake fluid
changed at least every two years by a BMW Sports Activity Vehicle Center, also refer
to the Service and Warranty Information Book-
let for US models or the Warranty and Service
Guide Booklet for Canadian models.<
Service and Warranty Information
Booklet for US models and
Warranty and Service Guide Booklet
for Canadian models
Please consult your Service and Warranty Infor-
mation Booklet for US models and Warranty
and Service Guide Booklet for Canadian models
for additional information on service require-
ments.
BMW recommends that you have service
and repair operations performed at your
BMW Sports Activity Vehicle Center.
Take the time to ensure that these service pro-
cedures are confirmed by entries in your vehi-
cle's Service and Warranty Information Booklet
for US models and Warranty and Service Guide
Booklet for Canadian models. These entries
verify that your vehicle has received the speci-
fied regular maintenance.<
Socket for OBD Onboard
Diagnostics
The chief components that make up the emis-
sions content can be checked by a device that
uses the OBD socket.
This socket is located under a cover on the left
side of the driver's footwell, just under the dash-
board.

Maintenance
106
Emissions values
The warning lamp lights up. Exhaust
values are deteriorating. Have the vehi-
cle checked as soon as possible.
Under certain conditions, the indicator will flash.
This indicates a serious rate of engine misfire.
When this occurs, you should reduce speed
and consult the nearest BMW Sports Activity
Vehicle Center as soon as possible. Severe
engine misfire even for only a short period of
time can seriously damage emission control
components, especially the catalytic converter.
Display of the previously described
malfunction on Canadian models.
When the fuel filler cap is not properly
tightened, the OBD system can detect
the vapor leak and the indicator lamp will light
up. If the filler cap is subsequently tightened,
the indicator lamp should go out within a few
days.<
Event data recorders
Your vehicle may be equipped with one or more
sensing and diagnostic modules or a recording
device capable of recording or transmitting cer-
tain vehicle data or information. In addition, if
you have a Subscription Service Agreement for
the BMW Assist system, certain vehicle infor-
mation may be transmitted or recorded in order
to provide such services.
Care
You can find useful information on caring for
your BMW in the Caring for your vehicle bro-
chure.

Reference
At a glance
Controls
Driving tips
Mobility
107
Replacing components
Onboard tool kit
The onboard tool kit is located in a compart-
ment on the left in the cargo area.
Wiper blades
Replacing front wiper blades
1.Move the wiper into the fold-out position,
refer to page42.
2.Lift the wiper arm and press the securing
spring, refer to arrow.
3.Pull the wiper blade off toward the wiper
arm.
4.Insert the new blade and snap it into place.
To prevent damage to the wipers, always
fold them back down onto the windshield
before you turn the ignition key to position 1
or 2 or open the hood.<
Replacing rear wiper blade
1.Lift the wiper arm.
2.Pull off the wiper blade, refer to arrow.
3.Insert a new wiper blade.
Lamps and bulbs
Lamps and bulbs make a significant contribu-
tion to road safety. Therefore, comply fully with
the following instructions during bulb replace-
ment. If you are not familiar with the specified
procedures or they are not described here,
BMW recommends having this work carried out
at your BMW Sports Activity Vehicle Center.
Never touch the glass of new bulbs with
your bare fingers, as even minute
amounts of contamination will burn into the
bulb's surface and reduce its service life. Use a
clean cloth, paper towel, or the like or grasp
bulb by its base.<
A replacement bulb set is available from your
BMW Sports Activity Vehicle Center.
In all work on the electrical system, switch
off the relevant component to prevent
short circuits. To avoid possible injury or equip-
ment damage when replacing bulbs, follow any
instructions provided by the bulb manufac-
turer.<
When maintaining the headlamps, please follow
the instructions in the separate Caring for your
vehicle brochure.

Replacing components
108 Please have your BMW Sports Activity
Vehicle Center work on lamps whose
replacement is not described here.<
Light-emitting diodes LEDs
Light-emitting diodes installed behind translu-
cent lenses serve as the light source for many of
the controls and displays in your vehicle. These
light-emitting diodes are related to ordinary
lasers.
Do not remove the covers, and never
stare into the unfiltered light for several
hours, as irritation of the retina could result.<
Xenon lamps*
The service life of these bulbs is very long and
the probability of failure is very low, provided
that they are not switched on and off an unusual
number of times. If one of these bulbs should
nevertheless fail, it is possible to continue driv-
ing with great caution using the fog lamps, pro-
vided traffic laws in your area do not prohibit
this.
To avoid risk of potentially fatal injuries
due to the extremely high voltages at
which these units operate, service work should
always be entrusted to qualified personnel.<
Halogen low beams
H7 bulb, 55 watts
Always wear gloves and eye protection –
the atmosphere inside the H7 bulb is
pressurized. Failure to observe this precaution
can lead to injuries should the bulb be dam-
aged.<
For checking and adjusting headlamp
aim, please contact your BMW Sports
Activity Vehicle Center.<
Driver's side
1.Position the screwdriver from the onboard
tool kit and pull off the lamp cover.
Exercise caution when handling the
screwdriver; otherwise, personal
injury can occur or the vehicle can be dam-
aged.<
2.Press the bulb holder downward and
remove.
3.Remove the bulb, install a new bulb.
4.Place the bulb holder with the lower edge
against the bracket and press it in until the
lamp base locks into place.
Front passenger side
Before replacing the bulb, remove the reservoir
for the windshield washing system from the

Reference
At a glance
Controls
Driving tips
Mobility
127
Battery114
– charging114
– disposal114
– indicator lamp12
– jump starting117
– power failure114
– remote control18
– warning lamp114
Belts, refer to Safety belts32
Beverage holder, refer to Cup
holders72
Blower, refer to
– Air volume64
– Air volume, adjusting
manually67
BMW homepage4
BMW maintenance
system105
Bottle holder, refer to Cup
holders72
Brake assistant51
– warning lamp53
Brake fluid104
– level104
– warning lamp104
Brake force display56
Brake lamps110
– indicator lamp, defective
bulb12,59
– replacing bulbs110
– two-stage56
Brake pads85
– breaking-in82
– warning lamp85
Brake pedal, refer to Safe
braking84
Brake rotors
– brake system82
– breaking-in82
Brakes84,104
– ABS51,84
– brake fluid104
– brake pads85
– breaking-in82
– handbrake39
– indicator/warning lamp12Brake system104
– brake fluid104
– brake pads85
– breaking-in82
– disk brakes85
– warning lamp
104
Brake wear warning
– refer to Brake pads85
– warning lamp104
Breakdown service, refer to
Receiving assistance116
Breaking-in82
Bulb replacement, refer to
Lamps and bulbs107
Buttons on steering wheel13
C
California law
– Event Data Recorders106
– Proposition 65 Warning5
Calling, refer to telephone
Owner's Manual
Can holder, refer to Cup
holders72
Capacities124
Capacity, cargo area124
Car care, refer to Caring for
your vehicle brochure
Car care products, refer to
Caring for your vehicle
brochure
Care, refer to Caring for your
vehicle brochure
Cargo, securing86
Cargo area22,76
– capacity124
– cover77
– emergency release, refer to
Opening manually22
– enlarging76
– floor cover78
– foldable rear backrest76
– hatch, refer to Liftgate22
– lashing eyes78
– opening from outside22
– opening with remote
control20
– power socket74Cargo loading85
– load86
– securing cargo86
– stowing cargo86
– vehicle85
Caring for artificial leather,
refer to Caring for your
vehicle brochure
Caring for carpet, refer to
Caring for your vehicle
brochure
Caring for leather, refer to
Caring for your vehicle
brochure
Caring for plastic, refer to
Caring for your vehicle
brochure
Caring for vehicle finish, refer
to Caring for your vehicle
brochure
Car keys, refer to Key set18
Car phone, refer to separate
Owner's Manual
Car phone preparation75
Car radio, refer to Owner's
Manual for Radio/Onboard
Computer
Car wash84
– refer to Caring for your
vehicle brochure
Cassette operation, refer to
Owner's Manual for Radio/
Onboard Computer
CD operation, refer to Owner's
Manual for Radio/Onboard
Computer
Cellphone, refer to separate
operating instructions
Central locking system19
– interior21
Changes, technical, refer to
For your own safety5
Changing a wheel111
Changing gears
– automatic transmission with
Steptronic41
– manual transmission40
Changing wheels97