2008 BMW M3 CONVERTIBLE cooling

At a glance
Controls
Driving tips
Mobility Reference
15
1Microphone for voice command system*
and for telephone in hands-free mode*
2SOS: initiating an Emergency Request
call
*135
3Reading lamps79
4Coupe: glass roof, electric
*30
5Interior lamps79
6Passenger airbag status lamp
*73
7Hazard warning flashers
8Flat Tire Monitor FTM
*69
Tire Pressure Monitor TPM
*70
9Central locking system23
10Radio, refer to separate Owner's Manual
11Automatic climate control14Dynamic Stability Control DSC68
15Electronic Damper Control EDC
*68
16M Engine Dynamics Control POWER54
Air distribution to the
windshield81
Air distribution to the upper body
area81
Air distribution to the footwell81
Automatic air distribution and flow
rate81
Cooling function82
Automatic recirculated-air control
AUC82
Recirculated-air mode82
Maximum cooling81
Residual heat mode82
Air flow rate81
Defrosting windows82
Rear window defroster82
12
Heated seats*38
Coupe:
Roller sun blind
*87
13Convertible:
Opening and closing retractable
hardtop32

Reference
At a glance
Controls
Driving tips
Mobility
19
>Settings for the display in the instrument
cluster:
>12h/24h format of the clock, refer to
page62
>Date format, refer to page62
>Units of measure for fuel consumption,
distance covered/remaining distances,
and temperature, refer to page62
>Light settings:
>Pathway lighting, refer to page76
>Daytime running lamps, refer to page77
>Automatic climate control: activating/deac-
tivating AUTO program, cooling function
and automatic recirculated-air control, set-
ting temperature, air flow rate and distribu-
tion, refer to page81 ff
>Entertainment:
>Audio volume, refer to separate Owner's
Manual
>Speed-dependent volume control, refer
to separate Owner's Manual
Central locking system
The concept
The central locking system functions when the
driver's door is closed.
The system simultaneously engages and
releases the locks on the following:
>Doors
>Luggage compartment lid
>Fuel filler door
>Convertible: center armrest and glove com-
partment
Operating from outside
>Via the remote control
>Via the door lock
>In cars with convenient access
*, via the
handles on the driver's and front passen-
ger's doorsThe anti-theft system is also operated at the
same time. It prevents the doors from being
unlocked using the lock buttons or door han-
dles. In addition, if the remote control is used,
the welcome lamps, interior lamps and the
door's courtesy lamps
* are switched on or off.
The alarm system
* is also armed or disarmed.
For further details of the alarm system,
refer to
page25.
Operating from inside
By means of the button for central locking, refer
to page23.
In the event of a sufficiently severe accident, the
central locking system unlocks automatically. In
addition, the hazard warning flashers and inte-
rior lamps come on.
Opening and closing:
Using the remote control
Persons or animals in a parked vehicle
could lock the doors from the inside. You
should therefore take the remote control with
you when you leave the vehicle so that the latter
can be opened from outside.<
Convertible: to operate the retractable
hardtop with the remote control, the
doors and luggage compartment lid must be
closed and the cargo bay partition must be
folded down and engaged on both sides. Refer
also to page32.<
Unlocking
Press the button.
The interior lamps, the courtesy lamps
* and the
welcome lamps come on.
Setting unlocking characteristics
You can set whether only the driver's door or
the entire vehicle is to be unlocked when the
button is pressed for the first time.
For operating principle, refer to page61.
1.Switch on the ignition, refer to page46.
2.Lightly push button1 in the turn indicator
lever up or down repeatedly until the sym-

Climate
80
Climate
1Airflow directed toward the windshield and
side windows
2Air to the upper body area
Draft-free ventilation83
3Air to the footwell
4Air distribution, manual
5Temperature adjustment, left-hand side of
passenger compartment
6Maximum cooling
7AUTO program
8Air flow rate, manual
9Automatic recirculated-air control AUC/
Recirculated-air mode10Temperature adjustment, right-hand side
of passenger compartment
11Residual heat
12Defrosting windows and removing conden-
sation
13Switching cooling function on/off manually
14Rear window defroster
15Air grill for interior temperature sensor –
please keep clear and unobstructed

Reference
At a glance
Controls
Driving tips
Mobility
81
Automatic climate control
Comfortable interior climate
AUTO program7 offers the ideal air distribution
and air flow rate for almost all conditions, refer
to AUTO program below. All you need to do is
select an interior temperature which is comfort-
able for you.
The following sections inform you in detail
about how to adjust the settings.
Most settings are stored for the remote control
currently in use, refer also to Personal Profile
settings on page18.
Adjusting air distribution manually
The air distribution can be
switched on and off manually. The
air is directed to the windshield, to
the upper body area and to the
footwell. Automatic air distribution adjustment
is deactivated.
You can switch the automatic air distribution
back on by pressing the AUTO button. This
automatically switches on the cooling function
as well.
Temperature
Set the desired temperatures indi-
vidually for the driver's and front
passenger's sides.
The automatic climate control
achieves this temperature as quickly as possi-
ble regardless of the season, using maximum
cooling or heating power if necessary, and then
maintains it.
When you switch between different tem-
perature settings in quick succession, the
automatic climate control does not have
enough time to achieve the set temperature.<
You can achieve maximum heating power with
the highest setting, regardless of the outside
temperature.
The lowest setting effects continuous cooling.
Maximum cooling
At outside temperatures above
327/06 and when the engine is
running, you obtain a maximum
cooling effect as soon as possible.
The automatic climate control goes into recir-
culated-air mode at the lowest temperature. Air
flows at maximum rate from the vents for the
upper body area. You should therefore open
them for maximum cooling.
AUTO program
The AUTO program adjusts the air
distribution to the windshield and
side windows, towards the upper
body area and into the footwell for you. The air
flow rate and your temperature specifications
will be adapted to outside influences as a result
of seasonal changes, e.g. sunlight or window
condensation.
The cooling is switched on automatically with
the AUTO program.
Adjusting air flow rate manually
Press the left side of the button to
reduce airflow. Press the right side
of the button to increase it.
You can reactivate the automatic mode for the
air flow rate with the AUTO button.
The air flow rate may be reduced or the blower
may be switched off entirely to save on battery
power. The display remains the same.
Switching the system on/off
With the blower at its lowest setting, press the
left side of the button to switch off the auto-
matic climate control. All displays are cleared
except for the rear window defroster if it is
switched on.
Press any button except REST or rear window
defroster to reactivate the automatic climate
control.

Climate
82
Automatic recirculated-air control
AUC/Recirculated-air mode
Switch on the desired operating
mode by pressing this button
repeatedly:
>LED off: outside air flows in continuously.
>Left-hand LED on, AUC mode: a sensor
detects pollutants in the outside air. If nec-
essary, the system blocks the supply of out-
side air and recirculates the inside air. As
soon as the concentration of pollutants in
the outside air has decreased sufficiently,
the system automatically switches back to
outside air supply.
>Right-hand LED on, recirculated-air mode:
the supply of outside air is permanently
shut off. The system then recirculates the
air currently within the vehicle.
If condensation starts to form on the
inside window surfaces during operation
in the recirculated-air mode, you should switch
it off while also increasing the air flow rate as
required.
The recirculated-air mode should not be used
continuously for lengthy periods, otherwise the
quality of the air inside the car will gradually
deteriorate.<
Via the button on the steering wheel
You can switch quickly between the recircu-
lated-air mode and the previous mode using a
button
on the steering wheel, refer to page11.
Residual heat
The heat stored in the engine is
used to heat the passenger com-
partment, e.g. while stopped at a
school to pick up a child.
The function can be switched on when the fol-
lowing conditions are met:
>Up to 15 minutes after the engine has been
switched off
>While the engine is at operating tempera-
ture
>As long as battery voltage is sufficient>At an outside temperature below 777/
256
The LED is lit when the function is on.
As of radio readiness, you can set the interior
temperature, the air flow rate and the air distri-
bution.
Defrosting windows and removing
condensation
Quickly removes ice and conden-
sation from the windshield and
front side windows.
Switch on the cooling function as well.
Switching cooling function on/off
The cooling function cools and
dehumidifies the incoming air
before reheating it as required,
according to the temperature setting. This
function is only available while the engine is
running.
The cooling function helps prevent condensa-
tion on the windows or removes it quickly.
Depending on the weather, the windshield may
fog over briefly when the engine is started.
The cooling function is automatically switched
on along with the AUTO program.
Rear window defroster
The defroster is switched off auto-
matically after a certain time.
Depending on your vehicle's
equipment, the upper wires serve as an antenna
and are not part of the rear window defroster.

Reference
At a glance
Controls
Driving tips
Mobility
83
Ventilation
1Use the knurled wheels to smoothly open
and close the air vents
2Use the lever to change the direction of the
airflow
3Knurled wheel for more or less cool air from
the vents for the upper body area
Ventilation for cooling
Adjust the vent outlets to direct the flow of cool
air in your direction, for instance if it has become
too hot in the car.
Draft-free ventilation
Set the vent outlets so that the air flows past
you and not straight at you.
Ventilation in the rear
1Use the knurled wheel to adjust the temper-
ature
>Turn toward blue: colder
>Turn toward red: warmer
2Use the knurled wheel to smoothly open
and close the air vents
3Use the lever to change the direction of the
airflow
Microfilter/activated-charcoal filter
The microfilter traps dust and pollen in the
incoming air. The activated-charcoal filter pro-
vides additional protection by filtering gaseous
pollutants from the outside air. Your BMW cen-
ter replaces this combined filter during routine
maintenance.

Reference
At a glance
Controls
Driving tips
Mobility
119
Keep oils, greases, etc. out of the reach of
children and comply with the relevant
warnings on the containers. Otherwise, health
hazards may result.<
Oil change
Have oil changed only at your BMW center or at
a workshop that works according to BMW
repair procedures with correspondingly trained
personnel.
Specified 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.
Do not use oil additives as these may
cause engine damage.<
Your BMW center will be glad to answer
any questions regarding BMW High Per-
formance Synthetic Oil or 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.
Viscosity ratings
Viscosity is a measure of an oil's flow rating and
is categorized in SAE classes.
Approved oils belong to the 10W-60 SAE
class.<
Alternative oil types
If BMW High Performance Synthetic Oil is not
available, you can add small quantities of other
synthetic oils in between oil changes. Only use
oils with the following specifications:
>Viscosity:
preferred: SAE 10W-60;
alternative: SAE 10W-40, SAE 5W-50 or
SAE 10W-50
>Specification:
API SJ/CF, API SK/CF or higher
Low ambient temperatures
The oils used at BMW factories for your vehicle
type are suitable for virtually any ambient tem-
perature. However, if the vehicle is operated at
temperatures below –47/–206 for extended
periods, your BMW center will be glad to rec-
ommend an optimal oil.
Coolant
Do not add coolant to the cooling system
when the engine is hot. Escaping coolant
can cause burns.<
Coolant consists of half water and half additive.
Not all commercially available additives are suit-
able for your BMW. Ask your BMW center for
suitable additives.
Only use suitable additives, otherwise
engine damage may result. Because
additives are harmful to your health, it is impor-
tant to follow the instructions on the contain-
ers.<
Comply with the appropriate environ-
mental protection regulations when dis-
posing of coolant additives.<
Checking coolant level
1.Do not open the engine hood before the
engine has cooled down.
2.Turn the cap of the expansion tank a little
counterclockwise to allow any accumulated
pressure to escape, then continue turning
to open.
3.The coolant level is correct if it is between
the maximum and minimum marks in the
filler neck, refer also to the diagram next to
the filler neck.

Everything from A to Z
158 Child-restraint fixing system
LATCH45
Child-restraint systems44
Child seats, refer to
Transporting children
safely44
Chrome parts125
Chrome polish125
Cigarette lighter, refer to
Lighter90
Cleaning headlamps56
– washer fluid57
Cleaning your BMW, refer to
Care123
Clock59
– 12h/24h format62
– setting time64
Closing
– from inside23
– from outside19
Clothes hooks89
Cockpit10
Cold start, refer to Starting the
engine47
Combined instrument, refer to
Instrument cluster12
Comfort access, refer to
Convenient access27
Comfort area, refer to Around
the center console14
"Comfort" with EDC69
Compartment for remote
control, refer to Ignition
lock46
Compass86
Computer60
Condensation, refer to When
the vehicle is parked100
Condition Based Service
CBS121
Configuring settings, refer to
Personal Profile18
Confirmation signals for
locking/unlocking the
vehicle21
Connecting vacuum cleaner,
refer to Connecting
electrical appliances90Consumption, refer to
Average consumption61
Consumption indicator, refer
to Average consumption61
Controls and displays10
Convenient access27
– replacing the battery28
Convenient loading in
convertible21
Convenient operation
– glass roof20
– glass roof with convenient
access27
– retractable hardtop20
– windows20
– windows with convenient
access27
Convertible
– bag holder92
– convenient loading21
– enlarging cargo bay91
– folding down rear
backrest92
– retractable hardtop31
– rollover protection
system74
– securing cargo101
Coolant119
– checking level119
Coolant temperature60
Cooling, maximum81
Cooling fluid, refer to
Coolant119
Cooling system, refer to
Coolant119
Copyright2
Corner-illuminating lamps,
refer to Adaptive Head
Light77
Cornering lamps, refer to
Adaptive Head Light77
Correct tires114
Courtesy lamps, refer to
Interior lamps79
Cruise control57
Cruising range61
Cup holders89
Curb weight, refer to
Weights155
D
Dashboard, refer to
Cockpit10
Dashboard, refer to
Instrument cluster12
Dashboard lighting, refer to
Instrument lighting78
Data, technical152
– dimensions153
– engine152
– weights155
Date
– setting64
Daytime running lamps77
Deactivating front passenger
airbags73
Deadlocking, refer to
Locking20
Defect
– door lock22
– fuel filler door108
– glass roof30
Digital clock59
Digital compass86
Dimensions153
Directional indicators, refer to
Turn signals55
Displacement, refer to Engine
data152
Display lighting, refer to
Instrument lighting78
Displays, refer to Instrument
cluster12
Displays and controls10
Disposal
– coolant119
– remote control battery28
– vehicle battery133
Distance remaining to service,
refer to Service
requirements63
Distance warning, refer to
Park Distance Control
PDC67
Door key, refer to Remote
control18
Door lock22