overheating BMW X5 4.8I 2007 E70 Owner's Manual

Controls
57Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Do not allow the engine to warm up by leaving it
running while the vehicle remains stationary.
Instead, drive off at a moderate engine speed.
The engine starts when you depress the
brake pedal while briefly pressing the
Start/Stop button.<
Procedure
1.Depress brake pedal.
2.Briefly press the Start/Stop button.
The system responds by automatically engag-
ing the starter for a certain period and automat-
ically disengaging it as soon as the engine
starts.
Special starting conditions
Depress the accelerator pedal half way when
starting the engine in the following situations:
>The engine fails to start on the first attempt,
e.g. if it is very hot or cold.
>The engine is started at very low tempera-
tures, below approx. + 57/– 156, at high
altitudes, over approx. 3,300 ft/1,000 m.
Avoid frequent starting in quick succes-
sion or repeated starting attempts in
which the engine does not start. Otherwise, the
fuel is not burned or inadequately burned and
there is a danger of overheating and damaging
the catalytic converter.<
Switching off engine
When leaving the vehicle, always take the
remote control with you.
When parking on a downhill incline, set the
parking brake, otherwise the vehicle could roll
away.<
Procedure
1.Engage transmission position P with the
vehicle stopped.
2.Briefly press the Start/Stop button.
Procedure before driving into a car
wash
The vehicle can roll if you proceed according to
the following steps:
1.With comfort access
*: insert the remote
control into the ignition lock.
2.Depress brake pedal.
3.With the engine running, engage transmis-
sion position N.
4.Release the parking brake.
5.Switch off the engine.
6.Leave the remote control in the ignition
lock.
Transmission position P will be engaged:
>automatically after approx. 30 minutes
>if you remove the remote control from the
ignition lock
Parking brake
The concept
Your BMW is equipped with an electromechan-
ical parking brake that is set and released with a
button.
The parking brake is primarily intended to pre-
vent the vehicle from rolling while parked.
With the engine stopped, the parking brake acts
on the rear wheels via an electromechanical
system. When the engine is running, the park-
ing brake acts on the disc brakes of the front
and rear wheels via the brake hydraulics.

Driving tips
123Reference
At a glance
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Mobility
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 sur-
face. This phenomenon is referred to as hydro-
planing, and is characterized by a partial or
complete loss of contact between the tires and
the road surface, ultimately undermining your
ability to steer and brake the vehicle.<
The risk of hydroplaning increases as the tread
depth of the tires decreases, refer also to Mini-
mum tread depth on page219.
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 at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Starting assistant
The starting assistant enables you to start off
conveniently on slopes. The parking brake is
not required for this purpose.
1.Hold the vehicle with the footbrake.
2.Release the footbrake and immediately
drive off quickly.
The starting assistant holds the vehicle
for approx. 2 seconds after releasing the
footbrake. Depending on the load, the vehicle
may also roll back slightly during this time.
After releasing the footbrake, immediately start
quickly, otherwise the starting assistant no
longer holds the vehicle after approx. 2 seconds
and it begins to roll back.<
Braking safely
Your BMW is equipped with ABS as a standard
feature. In situations that require it, it is best to
brake with full force. Since the vehicle maintains
steering responsiveness, you can still avoid
possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.Do not drive with your foot resting on the
brake pedal. Even light but consistent
pedal pressure can lead to high temperatures,
brake wear and possibly even brake failure.<
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor traffic conditions to
ensure that this maneuver does not endanger
other road users. The heat generated in this
process helps dry the pads and rotors to ensure
that full braking efficiency will then be available
when you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even
light but consistent pressure on the brake pedal
can lead to high temperatures, brake wear and
possibly even brake failure.<
The braking effect of the engine can be further
increased by downshifting in the manual mode
of the automatic transmission, if necessary into
first gear, refer to page61. This prevents an
excessive strain on the brakes.
Do not drive in idle or with the engine
stopped, otherwise there will be no
engine braking action or support of the braking
force and steering.
Never allow floor mats, carpets or any other
objects to protrude into the area of movement
of the pedals and impair their operation.<
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 minimum
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.

Reference 255
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Displays on the windshield,
refer to Head-Up Display94
Disposal
– battery of remote control
with comfort access37
– remote control battery174
– vehicle battery234
Distance, refer to
Computer69
"Distance to dest."70
Distance to destination, refer
to Computer69
Distance warning, refer to
PDC Park Distance
Control80
Door entry lighting100
Door key, refer to Keys/
remote control28
Door lock31
Door locking, confirmation
signals31
"Door locks"30,31,72
Doors
– manual operation32
– remote control30
DOT Quality Grades218
Draft-free ventilation106
Drinks holder, refer to Cup
holders114
"Driver's door only"30
Driver's seat, calibrating46
"Driver's seat climate"48
Driving lamps, refer to Parking
lamps/low beams97
Driving on poor roads126
Driving route, refer to
Displaying route144
Driving stability control
systems84
Driving through water123
Driving tips, refer to General
driving notes122
Dry air, refer to Cooling
function104
DSC Dynamic Stability
Control84
– indicator lamp13,84DTC Dynamic Traction
Control85
– activating85
– indicator lamp13,85
"DVD" DVD system in
rear174
"DVD format" for DVD system
in rear177
DVD for navigation130
DVD system in rear172
– CD/DVD player
173
– connecting headphones173
– controls172
– displaying images from CD/
DVD181
– DVD country codes174
– external device183
– information on CD/DVD
player182
– playing audio tracks from
CD/DVD178
– playing video from CD/
DVD174
– remote control173
– switching on/off174
Dynamic Brake Control
DBC84
"Dynamic route" for
navigation142
Dynamic Stability Control
DSC84
Dynamic Traction Control
DTC85
E
Easy entry/exit50
Electrical malfunction
– door lock32
– driver's door32
– fuel filler door212
– liftgate33
– panorama glass sunroof39
Electric steering wheel
adjustment49
Electronic brake-force
distribution84Electronic oil level check223
Emergency call236
Emergency operation, refer to
Manual operation
– door lock32
– driver's door32
– fuel filler door212
– liftgate33
– panorama glass sunroof39
– transmission lock, automatic
transmission61
Emergency services, refer to
Roadside Assistance237
"Enable services"208
"End call"194
Energy-conscious driving,
refer to Energy Control68
Energy Control68
Engine
– breaking-in122
– data242
– overheated, refer to Coolant
temperature68
– speed242
– starting56
– starting, comfort access36
– starting difficulties57
– switching off57
Engine compartment223
Engine coolant225
Engine oil
– adding224
– additives, refer to Approved
engine oils224
– approved engine oil224
– checking oil level223
– electronic oil level check223
"Engine oil level"224
Engine output, refer to Engine
data242
Engine overheating, refer to
Coolant temperature68
Engine speed242
Engine starting, refer to
Starting engine56
"Enter address"132