overheating BMW X3 3.0SI 2008 Owners Manual

Reference
At a glance
Controls
Driving tips
Mobility
39
output or speed. Have the system checked
immediately.
Manual transmission
1.Step on the brake.
2.Depress the clutch pedal and shift into neu-
tral.
If the clutch pedal is not depressed,
the motor will not start.<
3.Start the engine.
Automatic transmission*
1.Step on the brake.
2.Move selector lever into position P.
3.Start the engine.
Special starting conditions
In the following situations, press the accelerator
pedal halfway down while starting:
>If the engine fails to start on the first
attempt, for instance if it is very hot or cold.
>When starting the engine at very low tem-
peratures, e.g. below approx. +57/–156,
at high altitudes over approx. 3,300 ft/
1,000 m.
Avoid frequent starting in quick succes-
sion or repeated start attempts in which
the engine does not start. Otherwise, the fuel is
either not burned or inadequately burned and
there is a danger of overheating and damaging
the catalytic converter.<
Switching off engine
Do not remove the ignition key when the
vehicle is rolling; otherwise, the steering
wheel lock would engage, preventing you from
steering.
When leaving the vehicle, remove the ignition
key and lock the steering. To prevent the vehi-
cle from rolling, engage the parking brake firmly
when parking.<
Manual transmission
1.Engage the parking brake firmly.
2.Turn the ignition key to position 1 or 0.
3.Shift into first gear or reverse.
Automatic transmission*
1.With the vehicle at a stop, move the selector
lever into position P.
2.Turn the ignition key to position 1 or 0.
3.Engage the parking brake firmly.
Handbrake
The handbrake is primarily intended to prevent
the vehicle from rolling while parked; it brakes
the rear wheels.
Indicator lamp
The indicator lamp lights up; an acous-
tic signal also sounds when you begin
to drive. The handbrake is still engaged.
Indicator lamp for Canadian models.
Engaging
The lever engages automatically when you pull
up on it.
Releasing
Pull up slightly on the lever, press the button
and lower the lever.
If exceptional circumstances should
make it necessary to engage the hand-
brake while the vehicle is in motion, do not

Reference
At a glance
Controls
Driving tips
Mobility
85
Hills
To prevent overheating and reduced effi-
ciency of the brake system, drive long or
steep downhill grades in the gear in which the
least braking is required. Otherwise, even light
but continuous pressure on the brake can lead
to high temperatures, brake wear and possibly
even brake failure.<
The braking action of the engine can be further
intensified by downshifting, all the way down to
first gear if need be. This strategy helps you
avoid placing excessive loads on the brake sys-
tem. Downshifting in manual mode of automatic
transmission, refer to page41. When descend-
ing hills slowly, use HDC Hill Descent Control,
refer to page52.
Never drive with the clutch depressed,
with the transmission in neutral, or with
the engine switched off; otherwise, you will
have neither the braking action of the engine or
nor its power assistance to the brakes or steer-
ing.
Never allow floor mats, carpeting, or other arti-
cles to protrude into the area around the brake
or accelerator pedals and obstruct their move-
ment.<
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency 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 pulsating
effect that even extended application will fail to
cure.
Brake pads
The warning lamp lights up.
The brake pads have reached their min-imum pad thickness. Have brake pads replaced
immediately.
Cargo loading
To avoid loading the tires beyond their
approved carrying capacity, never over-
load the vehicle. Overloading can lead to over-
heating of the tire and increases the rate at
which damage develops inside the tires. The
ultimate result can assume the form of a sudden
blow-out.<
Make sure that no fluids leak in the cargo
area; as otherwise the vehicle could be
damaged.<
Determining load limit
1.Locate the following statement on your
vehicle's placard
*:
The combined weight of occupants
and cargo should never exceed
XXX lbs. or YYY kg. Otherwise, the vehicle
may be damaged and unstable driving con-
ditions may result.<
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 lbs. or YYY kg.
4.The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the XXX amount equals
990 lbs. and there will be five 150-lb. pas-
sengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is
240 lbs.:
990 lbs. minus 750 lbs. = 240 lbs.

Replacing components
114 Protect valve stems with valve stem
seal caps from dirt and contamina-
tion. Dirt in valve stems is a frequent source
of gradual air loss.<
4.Reinitialize the Flat Tire Monitor
* or reset
the Tire Pressure Monitor
*, refer to
pages54, 55.
Do not initialize the Flat Tire Monitor
when driving with a compact wheel.<
5.Replace the defective tire as soon as possi-
ble and have the new wheel/tire balanced.
Driving with compact wheel
Drive reservedly and do not exceed a speed of
50 mph/80 km/h.
Mounting the compact wheel can change the
driving characteristics. For example, it can
reduce tracking stability during braking, extend
braking distances, and alter self-steering char-
acteristics in the limit range. With winter tires,
these characteristics are more pronounced.
Only one compact wheel may be
mounted. You should re-equip with
wheels and tires of the original size as soon as
possible.<
Vehicle battery
Maintenance
The battery is 100 % maintenance-free, i.e., the
electrolyte will last for the life of the battery
when the vehicle is operated in a temperate cli-
mate. Your BMW Sports Activity Vehicle Center
will be happy to advise you on all questions con-
cerning the battery.
Warning lamp
The warning lamp lights up. The battery
is no longer being charged. The alterna-
tor V-belt is defective or there is a mal-
function in the charge current circuit of the
alternator. Have the system checked immedi-
ately.Do not continue driving if the V-belt is
defective. The engine could be damaged
due to overheating.
Moreover, an increased amount of force is
required for steering if there is a sharp drop in
the onboard supply voltage.<
Charging battery
Charge the battery in the vehicle only when the
engine has been switched off. For connections,
refer to Jump starting on page117.
Disposal
Have old batteries disposed of following
replacement at your BMW Sports Activity
Vehicle Center or bring them to a collection
point. Maintain the battery in an upright position
for transport and storage. Always secure the
battery to prevent it from tipping over during
transport.<
Power failure
After a temporary power supply interruption,
some equipment is subject to limited use and
must be reinitialized. Individual settings are also
lost and must be updated again:
>Panorama glass sunroof
It may be only possible to raise the sunroof.
The system must be initialized, refer to
page24.
>Power windows
The pinch protection system must be reini-
tialized, refer to page23.
>Seat and mirror memory
The positions must be stored again, refer to
page31.
>Time
Must be set again, refer to page47.

Everything from A to Z
132 Manual operation
– door lock21
– driver's door21
– fuel filler door92
– liftgate22
– panorama glass sunroof25
Manual transmission40
Master key18
– with remote control18
Maximum speed, with winter
tires98
Mechanical seats28
Memory, refer to
– Seat and mirror memory31
– Vehicle Memory, Key
Memory18
Microfilter
– air conditioner65
– automatic climate control68
Microphone, refer to Car
phone preparation75
Microphone for telephone75
Mirrors33
– automatic curb monitor33
– mirror heating33
– mirror memory, refer to Seat
and mirror memory31
Mobile phone, refer to
separate operating
instructions
Monitoring tire pressure
– refer to Flat Tire Monitor54
– refer to Tire Pressure
Monitor55
Multi-function steering wheel,
refer to Buttons on steering
wheel13
Multifunction switch
– turn signals/headlamp
flasher41
– washer/wiper system42
N
Navigation system, refer to
separate Owner's Manual
Neck support, refer to Head
restraints29
Nets73
New keys18
Non-smoker's equipment
package74
Nozzles, refer to
Ventilation65,68
Nylon rope, refer to Tow
starting and towing118
O
OBD socket105
Octane rating, refer to Fuel
quality93
Odometer46
Oil
– additives, refer to Approved
engine oils103
– approved engine oils103
– level102
– refilling, refer to Adding
engine oil103
Oil change interval, refer to
Service Interval Display47
Oil grades103
Oil level102
– warning lamp102
Oil pressure102
– warning lamp102
OILSERVICE47
Old batteries, refer to
Disposal114
Onboard computer, refer to
separate Owner's Manual
Onboard Diagnostics OBD
interface socket105
Onboard tool kit107
Opening and closing
– from inside21
– using the door lock21
– with the remote control19Output, refer to Engine
data122
Outside air
– air conditioner64
– automatic climate control68
Outside temperature display
– changing unit of measure48
– on computer48
Overheating of engine, refer to
Coolant thermometer47
P
Package tray, refer to Cargo
area cover77
Panic mode20
Panorama glass sunroof23
– closing after electrical
malfunction25
– convenience operation21
– initializing24
– power failure24
– remote control20
Park Distance Control PDC50
Parking aid, refer to PDC Park
Distance Control50
Parking assistant, refer to
PDC Park Distance
Control50
Parking brake, refer to
Handbrake39
Parking lamps59
Parking lamps/low beams59
Partition net78
Parts and accessories, refer to
For your own safety5
Passenger-side mirror tilt
function33
Pathway lighting59
PDC Park Distance Control50
Pinch protection system23
– power windows23
Plastic, refer to Caring for your
vehicle brochure
Pollen, refer to
– Microfilter65
– Microfilter/activated
charcoal filter68