2008 BMW M3 engine overheat

Controls
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Navigation
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Mobility
Radio readiness and ignition off
All indicator and warning lamps as well as dis-
plays in the instrument cluster go out.
Starting the engine
Do not run the engine in closed rooms,
otherwise the inhalation 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, otherwise such a vehicle repre-
sents a potential safety hazard.
Before leaving the car with the engine running,
place the transmission in neutral and forcefully
apply the parking brake to prevent the car from
moving.<
Avoid frequent starting in quick succes-
sion as well as repeated start attempts in
which the engine does not start. Otherwise, the
fuel is not burned or incompletely burned and
there is a danger of overheating and damaging
the catalytic converter.<
Do not wait for the engine to warm up while the
vehicle remains stationary. Start driving right
away, but at moderate engine speeds.
Manual transmission
Remote control in the ignition lock or, with con-
venient access, inside the vehicle, refer to
page35.
1.Depress the brake.
2.Depress the clutch and shift to neutral.
3.Press the start/stop button.The starter operates automatically for a certain
time, and stops automatically as soon as the
engine has started.
To stop the starting procedure: press the start/
stop button again.
M dual clutch transmission with
Drivelogic
Remote control in the ignition lock or, with con-
venient access, inside the vehicle, refer to
page35.
1.Depress the brake.
2.Press the start/stop button.
The engine starts with the selector level in any
position. Driving off: with the engine running,
move the selector level from the middle position
Β in the desired direction.
Every time you start the engine, sequential
mode is activated in program S3 if you lightly
press the selector lever to the right to position
D/S with the brake pedal depressed.
Switching off the engine
Always take the remote control with you
when you leave the vehicle.
When parking, apply the parking brake force-
fully, otherwise the vehicle could begin to roll.<
Manual transmission
1.With the car at a standstill, press the start/
stop button.
2.Shift into first gear or reverse.
3.Forcefully apply the parking brake.
4.Removing the remote control from the igni-
tion lock, refer to page54.
M dual clutch transmission with
Drivelogic
1.Press the start/stop button.
If N is engaged when you switch off the
engine, you are notified visually and acous-
tically.
2.Forcefully apply the parking brake.

Controls
57Reference
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Mobility
Reverse gear
Select this only when the vehicle is stationary.
When the gearshift lever is pressed to the left, a
slight resistance has to be overcome.
M dual clutch transmission
with Drivelogic*
The concept
The M dual clutch transmission with Drivelogic
is an automated manual transmission with two
clutches and a partial transmission in which an
electro-hydraulic system takes over clutch
action and shifting.
With the M dual clutch transmission, gears are
changed without interruption of the traction
force.
The M dual clutch transmission is operated
using the selector lever and two shift paddles
on the steering wheel.
The transmission offers you the following func-
tions:
>Selection between manual and automatic
operation: sequential mode or drive mode
>Selection between different drive pro-
grams, Drivelogic, refer to page60
>Shift Lights, refer to page61
>Automatic downshifting and protection
against selecting the wrong gear even in
sequential mode
>Launch Control, refer to page62
>Automatic throttle blip
>Low Speed Assistant
System limitations
The M dual clutch transmission is equipped
with an overheating protection system that pro-
tects the clutch against extreme loads.
The indicator lamp lights up yellow
when the transmission becomes too
warm. Avoid high engine loads and
driving off frequently. When the transmission is
overheated, the indicator lamp lights up red and
the fuel supply to the engine is cut off. You can-not continue driving until the transmission has
cooled down.
Avoid driving off frequently with high accelera-
tion and do not hold the vehicle on inclines by
pressing lightly on the accelerator while letting
the clutch slip, as this may cause the transmis-
sion to overheat.
In traffic congestion or at very low speeds, use
the Low Speed Assistant, refer to the informa-
tion below.
Low Speed Assistant
The Low Speed Assistant supports you when
driving at very low speeds: the vehicle moves at
walking speed and automatically controls the
engine speed. You can also use the Low Speed
Assistant when rocking the vehicle out of deep
snow. To do so, shift between reverse gear and
the forward position without pressing the brake.
Activating
1.Engage a drive position.
2.Briefly tap the accelerator.
The vehicle rolls at the minimum speed. Do not
press the brake continuously as this may cause
the transmission to overheat.
Deactivating
Brake the vehicle to a stop to deactivate the
Low Speed Assistant.
Selector lever positions
>R: reverse gear

Driving tips
115Reference
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Controls
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Mobility
ing, take care to avoid possible contact
between the hot exhaust system and any highly
flammable materials such as hay, leaves, grass,
etc. Such contact could lead to a fire, with the
risk of serious personal injuries and property
damage. Do not touch hot exhaust pipes, e. g.
when loading the cargo bay, otherwise there is a
risk of burn injuries.<
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 situation, known as hydroplaning,
means that the tire can completely lose contact
with the road surface, so that neither the car can
be steered nor the brake be properly applied.<
The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page209.
Driving through water
Drive through water on the road only if it is
not deeper than 1 ft/30 cm, and then only
at walking speed at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Use the parking brake on inclines
On inclines, do not hold the vehicle for a
lengthy period using the clutch; use the
parking brake instead. Otherwise greater clutch
wear will result.<
For more information about the drive-off assis-
tant, refer to page84.
Braking safely
Your BMW is equipped with ABS as a standard
feature. Applying the brakes fully is the most
effective way of braking in situations in which
this is necessary. 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.
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 brake pressure can lead to
high temperatures, brake wear and possibly
even brake failure.<
You can increase the engine's braking effect by
shifting down, all the way to first gear if neces-
sary. This strategy helps you avoid placing
excessive loads on the brake system.
M dual clutch transmission: never drive
with the transmission in neutral or with
the engine switched off; otherwise, engine
braking action will not be present or there will be
no power assistance to the brakes or steering.
Manual transmission: never drive with the
clutch held down, with the transmission in neu-
tral or with the engine switched off; otherwise,
engine braking action will not be present or
there will be no power assistance to the brakes
or steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
pedals, otherwise pedal function could be
impaired.<
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

Replacing components
228 4.Adjust the tire inflation pressure to 29 psi/
200 kPa. With the ignition switched on, pro-
ceed as follows:
>To increase the inflation pressure:
Switch on the compressor, position I. To
check the current inflation pressure set-
ting, briefly switch off the compressor.
Do not let the compressor run for
more than 10 minutes, otherwise the
device will overheat and may be dam-
aged.<
>To reduce the inflation pressure: turn
screw 8 on the pressure gauge.
If the inflation pressure is not maintained,
drive the vehicle a second time, refer to
Distributing the sealant. Then repeat steps 1 to
4.
Use of the M Mobility System may be ineffec-
tual for tire damage larger than approx. 0.16 in/
4 mm. Please contact the nearest BMW center,
refer to page230, or a workshop that works
according to BMW repair procedures with cor-
respondingly trained personnel if the tire can-
not be made roadworthy with the M Mobility
System.<
The tire inflation pressure must be at least
29 psi/200 kPa. If it is not, do not continue
driving.<
Continuing your trip
Do not exceed the maximum allowable
speed of 50 mph/80 km/h to avoid the risk
of an accident.<
Reinitialize the Flat Tire Monitor, refer to
page85 for more information.
Have the faulty tire and the sealant bottle of the
M Mobility System replaced as soon as possi-
ble.<
Changing wheels
The tools for changing wheels are avail-
able as optional accessories from your
BMW center.<
Jack mounting points
The jacking points are at the positions shown in
the illustration.
Vehicle battery
Battery care
The battery is 100 % maintenance-free, the
electrolyte will last for the life of the battery
when the vehicle is operated in a temperate cli-
ma te. Your BM W center will be glad to advise in
all matters concerning the battery.
Charging the battery
Only charge the battery in the vehicle via the
terminals in the engine compartment with the
engine off. Connections, refer to Jump starting
on page231.
Disposal
Have old batteries disposed of by your
BMW center or hand them in to a recy-
cling center. Maintain the battery in an upright
position for transport and storage. Always
secure the battery against tipping over during
transport.<
Power failure
After a temporary power loss, the functioning of
some equipment may be limited and require
reinitialization. Individual settings may likewise
have been lost and will have to be programmed:
>Time and date
These values must be updated, refer to
page74.

Reference 251
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
DVD
– drive for navigation DVD152
DVD for navigation124
"Dynamic route" in
navigation137
Dynamic Stability Control
DSC
– indicator/warning lamp84
– M Dynamic Mode MDM82
E
"EDC"48,49
EDC, refer to Electronic
Damper Control84
Eject button, refer to Buttons
on the CD player152
Electric
– seat adjustment41
Electrical malfunction
– door lock32
– driver's door32
– fuel filler door204
– glass roof39
– luggage compartment lid33
– M dual clutch transmission
with Drivelogic59
Electric seat41
Electric seat adjustment41
Electric steering wheel lock
– with convenient access36
Electronic brake-force
distribution82
Electronic Damper Control
EDC84
– "Comfort"84
– "Normal"84
– "Sport"84
Electronic oil level check219
Electronic Stability Program
ESP, refer to Dynamic
Stability Control DSC82
Emergency operation
– fuel filler door, manual
release204
Emergency operation, refer to
Closing manually
– glass roof39Emergency operation, refer to
Manual operation
– door lock32
Emergency release
– luggage compartment lid
from inside34
Emergency Request230
Emergency services, refer to
Roadside Assistance230
"Enabled services"198
"Enabled TeleServices"196
"End call"185
Engine
– breaking in114
– data238
– overheated, refer to Coolant
temperature68
– speed238
– starting55
– starting, convenient
access35
– switching off55
Engine compartment219
Engine coolant, refer to
Coolant222
Engine oil
– adding221
– BMW Maintenance
System212
– checking level219
– intervals between changes,
refer to Service
requirements72
– possible displays220
"Engine oil level"221
Engine output, refer to Engine
data238
Engine speed, refer to Engine
data238
Engine starting, refer to
Starting the engine55
"Enter address"127
Entering a destination127
Entering a destination
country127
Entering a house number or
intersection129
Entering an intersection128
Entering a street128"Entertainment"152
Entry lamps, refer to Interior
lamps95
"Equalizer", refer to Tone
control155
Equalizer, refer to Tone
control154
Error messages, refer to
Check Control77
"ESN"162
Event data recorders213
Exhaust system, refer to Hot
exhaust system114
Exterior mirrors45
– adjusting45
– automatic dimming
feature46
– automatic heating46
– folding in and out45
External audio device106
External audio device, refer to
AUX-In port171
Eyes
– for tow-starting and towing
away232
– for tying down loads117F
Fader, tone control153
Failure messages, refer to
Check Control77
Failure of an electrical
consumer229
False alarm
– avoiding unintentional
alarm35
– switching off an alarm34
Fastening safety belts, refer to
Safety belts44
Fastest route for
navigation137
Fast forward
– CD changer169
– CD player169
"Fast route" in navigation137

Everything from A - Z
256 "New address" in
navigation135
"New destination"127,131
"New route"143
New tires209
"Next entertainment
source"47
"Normal"63
"Normal" with EDC84
North-facing map141
Nozzles96
Number of cylinders, refer to
Engine data238
Nylon rope, refer to Tow
rope233
O
OBD socket, refer to Socket
for On-Board Diagnosis213
Octane ratings, refer to Fuel
specifications204
Odometer67
Oil, refer to Engine oil219
Oil consumption219
Oil level219
Old batteries, refer to
Disposal228
"On a new destination" in
navigation133
"Onboard info"69
Onboard tool kit223
"On destination"133
"On location"133
Opening and closing
– convenient access35
– from inside32
– from outside29
– using the door lock31
– via the remote control29Operation by voice for mobile
phone189
– adjusting volume190
– canceling189
– correcting phone
number190
– dialing phone number190
– placing a call190
– redialing190
– voice commands189
– voice phone book190
"Options"197,198
Orientation menu, refer to
Start menu17
Outlets
– refer to Ventilation99
Output, refer to Engine
data238
Outside-air mode
– automatic climate control98
Outside temperature
display67
– changing units of
measure71
– in computer71
Outside temperature
warning67
Overheated engine, refer to
Coolant temperature68
P
Paintwork care215
Park assistant, refer to Park
Distance Control81
Park Distance Control PDC81
"Parked car operation"100
"Parked car ventilation"100
Parked car ventilation100
– activating switch-on
times101
– preselecting switch-on
times100
– switching on and off
directly100
Parking
– vehicle55
Parking aid, refer to Park
Distance Control PDC81Parking brake56
– indicator lamp56
Parking lamps92
Parking lamps/low beams92
Passenger-side mirror tilt
function46
"Pathway lighting"93
Pathway lighting93
"PDC"81
Personal Profile28
"Perspective"141
Phone book183
Phone numbers
– deleting from phone
book187
– dialing185
– most recent numbers186
– selecting in phone book186
– Top 8186
Pinch protection system
– glass roof, electric38
– windows37
Placing a call, refer to
telephone owner's manual
"Play" for satellite radio163
Polish216
Pollen
– refer to Microfilter/activated-
charcoal filter for automatic
climate control100
Position
– displaying147
– saving, refer to Storing
current position135
"POWER"48,49
Power failure228
Power windows37
– safety switch38
Power windows, refer to
Windows37
"Presets", displaying with the
radio156
"Presets" for satellite
radio
163
Pressure, tires206
Pressure monitoring, tires84
– Flat Tire Monitor84