2006 BMW 525I SEDAN engine overheat

Controls
59Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Starting engine
Do not run the engine in closed rooms,
otherwise the inhaling of toxic exhaust
gases can cause unconsciousness and death.
The exhaust gases contain carbon monoxide,
an odorless and colorless, but highly toxic gas.
Never leave an unattended vehicle with the
engine running, as such a vehicle represents a
potential safety hazard.
Before leaving the vehicle with the engine run-
ning, set the selector lever to the idling or the
P position and set the handbrake, otherwise the
vehicle can begin to roll.<
When starting the engine, do not press the
accelerator pedal.
Do not allow the engine to warm up by leaving it
running while the vehicle remains stationary.
Instead, begin to drive immediately at a moder-
ate engine speed.
Do not press either the brake or the clutch
pedal as long as you do not want to start
the engine. The engine starts immediately
when you briefly press the Start/Stop button
and press the brake pedal with an automatic
transmission
* or the clutch pedal with a manual
transmission.<
Manual transmission
1.Apply the handbrake.
2.Depress the clutch pedal and select the
idling position.
3.Briefly press 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.
Automatic transmission*
1.Depress brake pedal.
2.Place selector lever in position P or N.
3.Briefly press 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.
SMG Sequential Manual
Transmission*
1.Depress brake pedal.
2.Engage selector lever position N and make
sure that this position is also indicated in
instrument cluster.
3.Briefly press 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.
If the engine fails to start, depress the
brake pedal and press the selector lever
to the right then engage the position N. Watch
the display in the instrument cluster while doing
so.<
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.<

Driving
62 In the following situations, SMG thinks for you:
>Upshifts and downshifts are executed only
when they will result in a plausible combina-
tion of engine and vehicle speed; thus, for
example, a downshift that would cause the
engine to overrev will not be executed by
the system.
>When the vehicle is stationary, the trans-
mission automatically downshifts into first
gear.
>Shortly before dropping below a gear-
dependent minimum speed, the transmis-
sion downshifts automatically even without
your intervention.
D Drive mode
In the Drive mode, all forward gears are shifted
automatically.
Shifting from Sequential mode to Drive mode:
press selector lever to the right toward D.
Kick-down: for rapid acceleration, e. g. when
passing, press the accelerator pedal as far
down as it will go. You achieve maximum accel-
eration.
To switch back into the Sequential mode: press
selector lever to the right again toward D or shift
using the shifting paddles or the selector lever.
Start off quickly on slopes. Do not hold
the vehicle on a hill by pressing the accel-
erator, but apply the handbrake instead. Other-
wise overheating can occur in the transmission
region.<
Gear changes
Using selector lever
>To upshift, pull the selector lever back.
>To downshift, push the selector lever for-
ward.
Using shift paddles on steering wheel
>To upshift, pull one of the shift paddles.
>To downshift, press.
Dynamic Driving Control
The Dynamic Driving Control makes it possible
for your BMW to react in an even more perfor-
mance-oriented manner at the push of a button:
>The engine responds more spontaneously
to accelerator pedal movements.
>Gearshifts are faster.
>The engine speed range is used optimally in
the Drive mode.
>Cruise control
*:
The stored speed is reached more quickly
when it is requested.
Activating system
Press the SPORT button.
The LED in the button lights up and SPORT is
displayed in the instrument cluster.
Deactivating system
Press the SPORT button again.
The LED in the button and SPORT in the instru-
ment cluster go out.

Driving tips
125Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
Mobile communications devices in
vehicle
BMW discourages the use of mobile
communications devices, e. g. mobile
phones, inside the vehicle without a direct con-
nection to an outside antenna. Otherwise, the
vehicle electronics and mobile communication
device can influence one another. In addition,
there is no assurance that the radiation which
results from transmission will be dissipated
from the vehicle interior.<
Interior and exterior mirrors,
automatic dimming feature*
This feature is controlled by two photocells in
the inside rearview mirror. One is integrated into
the glass of the mirror, while the other is located
at an offset position on the rear of the mirror
housing.
For trouble-free operation, keep the photocells
clean and do not cover the area between the
interior rearview mirror and the windshield. Do
not attach stickers of any kind to the windshield
in front of the mirror, either.
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 tire tread on page201.
Driving through water
Do not drive through water on the road if it
is deeper than 1 ft/30 cm, and then only at
walking speed at the most. Otherwise, the vehi-
cle's engine, the electrical systems and the
transmission may be damaged.<
Using handbrake on inclines
On inclines, do not hold the vehicle with
the clutch; use the handbrake. Otherwise
greater clutch wear will result.<
SMG Sequential Manual Transmission
Start off quickly on slopes. Do not hold
the vehicle on a hill by pressing the accel-
erator, but apply the handbrake instead. Other-
wise overheating can occur in the transmission
region.<
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.

Things to remember when driving
126 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, if necessary all the
way down into first gear. This strategy helps
you avoid placing excessive loads on the brake
system. For information on downshifting in the
manual mode of the automatic transmission,
refer to page64.
Do not drive with the clutch depressed, in
idle or with the engine switched off, other-
wise 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.
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.
When vehicle is parked
Condensation forms in the air conditioner sys-
tem during operation, and then exits under the
vehicle. Traces of condensed water under the
vehicle are therefore normal.
Before driving into a car wash
To prevent the exterior mirrors on this vehicle
from being damaged, always fold them in by
hand before entering an automatic car wash.
General information on the care and mainte-
nance of your BMW is contained in the Caring
for your vehicle brochure.
Rear window wiper*
The rear window wiper can be damaged in car
washes. Take appropriate protective measures;
ask the car wash operator if necessary.
With comfort access and automatic
transmission
Insert the remote control into the ignition lock.
The engine can be switched off in the selector
lever position N. Also refer to page40.
Cargo loading
To avoid loading the tires beyond their
approved carrying capacity, never over-
load the vehicle. Overloading can lead to over-
heating and increases the rate at which damage
develops inside the tires. The ultimate result
can assume the form of a sudden blow-out.<

Reference 241
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
"Display"84
Display, refer to iDrive16
Display lighting, refer to
Instrument lighting104
"Display off"21
Displays, refer to Instrument
cluster12
"Display settings"82
Displays on the windshield,
refer to Head-Up Display96
Disposal
– battery of remote control
with comfort access40
– vehicle battery218
Distance, refer to
Computer76
Distance cruise control, refer
to Active cruise control67
"Distance to dest."76
Distance to destination, refer
to Computer76
Distance warning, refer to
PDC Park Distance
Control85
Divided rear seat back, refer to
Through-loading
system116
Door entry lighting104
Door key, refer to Keys/
remote control28
Door lock32
Door locking, acknowl-
edgment signals31
"Door locks"30
Doors
– manual operation32
– remote control30
DOT Quality Grades200
Draft-free ventilation108
Drinks holder, refer to Cup
holders114
Drive mode62
"Driver's door only"30
Driving lamps, refer to Parking
lamps/low beams101
Driving notes124
Driving route, refer to
Displaying route145Driving stability control
systems86
Driving through water125
Driving tips, refer to Driving
notes124
Dry air, refer to Cooling
function107
Drying the air, refer to Cooling
function107
DSC Dynamic Stability
Control86
– indicator lamp13,87
DTC Dynamic Traction
Control87
– activating87
– indicator lamp
13,87
DVD for navigation132
Dynamic Brake Control
DBC86
Dynamic Drive89
Dynamic Driving Control62
Dynamic Stability Control
DSC86
Dynamic Traction Control
DTC87
E
Easy entry/exit52
– backrest width47
Eject button, refer to Buttons
on CD player152
Electrical malfunction
– door lock32
– driver's door32
– fuel filler door194
– glass sunroof, electric42
– luggage compartment lid34
– panorama glass sunroof44
– tailgate36
Electric steering wheel
adjustment52
Electronic brake-force
distribution86
Electronic oil level check205
Emergency call219Emergency operation, refer to
Manual operation
– door lock32
– driver's door32
– fuel filler door194
– glass sunroof42
– luggage compartment lid34
– panorama glass sunroof44
– selector lever interlock,
automatic transmission64
– tailgate36
Emergency release for
luggage compartment lid in
luggage compartment34
Emergency services, refer to
Roadside Assistance220
"Emission inspect."78
"Enable services"188
"End call"179
"End Night Vision"100
Energy-conscious driving,
refer to Energy Control75
Energy Control75
Engine
– breaking-in124
– data226
– overheated, refer to Coolant
temperature74
– speed226
– starting59
– starting, comfort access38
– starting difficulties59
– switching off60
Engine compartment205
Engine coolant207
Engine oil
– adding206
– additives, refer to Approved
engine oils206
– approved engine oil206
– checking oil level205
– electronic oil level check205
"Engine oil level"206
Engine output, refer to Engine
data226
Engine overheating, refer to
Coolant temperature74
Engine speed226