2005 BMW 645CI COUPE&CONVERTIBLE cooling

At a glance
15Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
1Coupe: glass sunroof, electric with raise
function
*37
2Microphone for portable phone
*151
Convertible: microphone on steering
column
3Reading lamps93
4Interior lamps93
5Microphone for voice command
system
*22
Convertible: microphone on steering
column
6Coupe: initiating emergency call
*185
7Convertible: initiating emergency
call
*185
8Control Display16
9Hazard warning flashers
10Central locking system31
11Automatic climate control9412Starting search function
>for radio station137
>for track144
13Ejecting
>navigation DVD
*114
>audio CD132
14Drive for navigation DVDs
*114
15Drive for audio CDs132
16Switching audio sources on/off and
adjusting volume132
18Bracket for cup holder103
19Controller16
20Activating voice command system
*22
21Opening start menu on Control Display17
22Dynamic Driving Control59 Temperature setting, left/right95
Automatic air distribution and
volume95
Cooling function95
AUC Automatic recirculated-air
control95
Maximum cooling95
Residual heat mode96
Switching off automatic climate
control96
Air volume95
Defrosting windows and removing
condensation95
Rear window defroster94
17
Heated seats49
PDC Park Distance Control
*80
DTC Dynamic Traction Control82
Convertible: opening the convert-
ible top40
Convertible: closing the convertible
top40

A congenial climate
94
A congenial climate
1Airflow directed toward the windshield and
side windows
2Air for the upper body area, refer to
Ventilation on page97
3Air to footwell
4Temperature, left side of passenger
compartment
5Maximum cooling
6Defrosting windows and removing
condensation
7Air volume, manual
8Switching off automatic climate control9Switching cooling function on and off
manually
10Temperature, right side of passenger
compartment
11Residual heat mode
12AUTO program
13AUC automatic recirculated-air control/
recirculated air mode
14LED for independent ventilation
15Rear window defroster
Convertible: only active when rear window
is closed
16Air grill for interior temperature sensor –
please keep clear and unobstructed

Controls
95Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
The current setting for air distribution is dis-
played on the Control Display.
A congenial climate
For almost all conditions, the AUTO program
offers the optimal air distribution and air vol-
ume. Select an interior temperature you find
pleasant.
The following section contains more detailed
information on the available setting options.
AUTO program
The AUTO program handles the
adjustment of air distribution to the
windshield and side windows, in
the direction of the upper body, and in the foot-
well, as well as the adjustment of the air volume.
It also adapts your instructions for the tempera-
ture to outside influences throughout the year.
The cooling is switched on automatically with
the AUTO program. At the same time, a con-
densation sensor controls the program in such
a way that window condensation is prevented
as much as possible.
Temperature adjustment
By rotating, you can set a desired
temperature for the driver's side
and the passenger side.
After you start to drive, this system
ensures that the selected temperature is
achieved as quickly as possible. It then main-
tains this temperature, regardless of the sea-
son.
Defrosting windows and removing
condensation
This program quickly removes ice
and condensation from the wind-
shield and front side windows.
Air volume, manual
You can adjust the air volume by
turning. You can reactivate the
automatic mode for the air volume
with the AUTO button.
Switching cooling function on and off
manually
The cooling function cools and
dehumidifies the incoming air
before reheating it as needed
according to the temperature setting. Depend-
ing on the weather, the windshield may fog over
briefly when the engine is started.
The air conditioner can operate only when the
engine is running. The AUTO program auto-
matically switches on the air conditioner.
Maximum cooling
This program quickly provides
maximum cooling.
The system switches to the recir-
culated-air mode and the air flows
at maximum air volume only from the vent out-
lets for the upper body area. For this reason you
should ensure that these vent outlets are open
before selecting this program.
AUC automatic recirculated-air
control/recirculated air mode
You can respond to unpleasant
odors or pollutants in the immedi-
ate environment by temporarily
suspending the supply of outside air. The sys-
tem then recirculates the air currently within the
vehicle. In AUC mode, a sensor detects pollut-
ants in the outside air and controls the shut-off
automatically.
Press the button repeatedly to run through the
following control sequence:
>LED off: outside air flows into the vehicle
continuously.
>Right LED on, AUC mode: the system
detects pollutants in the outside air and
responds by blocking the supply of outside
air when required.
>Left LED on, recirculated-air mode: the
supply of outside air into the vehicle is shut
off continuously.
If condensation starts to form on the
inside window surfaces during operation
in the recirculated-air mode, you should switch

A congenial climate
96 it off while also increasing the air volume as
required.
The recirculated-air mode should not be used
over a longer period of time, as the air quality
inside the vehicle deteriorates continuously.<
Residual heat mode
Press the button when the motor is
switched off and warm.
The heat stored in the engine is
used to heat the passenger com-
partment, e.g. when stopped at a school to pick
up a child.
You can adjust the automatic climate control
settings as of ignition key position 1.
Provided that the engine has warmed to its nor-
mal operating temperature and the battery is
charged, you can use this function for up to
15 minutes after switching off the ignition. The
LED in the button lights up to confirm compli-
ance with both of these conditions.
Switching off automatic climate control
The air volume, the heater and the
cooling function are all switched
off.
You can restart the automatic cli-
mate control by pressing any of its buttons
except the REST button.
Settings using Control Center
Ignition key:
>In vehicles with separate drives for audio
CDs and navigation DVDs, ignition key in
position 2.
>In vehicles with one drive for audio CDs,
ignition key in position 1.
Control Center, for principle details, refer to
page16.1.Press the button.
This opens the start menu.
2.Move the controller to the left to open "Cli-
mate".
You can set the following:
>Manual air distribution, separate for driver's
side and passenger side
>Adapting temperature in upper body region
>Intensity of the AUTO program
The settings are stored for the remote control
currently in use.
Manual air distribution
You can preset the air distribution yourself and
also adjust the air temperature in the upper
body area.
1.Select "Vent settings" and press the con-
troller.
2.Select the desired field by moving the con-
troller and turn the controller to adjust the
air distribution.
1Airflow directed toward the windshield and
side windows, driver's side only
2Airflow for the upper body
3Air to footwell

Controls
97Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
To select the front passenger area:
Move the controller to the right.
Pressing the AUTO button raises and
lowers the air distribution settings on the
Control Display.<
Adapting temperature in upper body
region
1.Select "Vent settings" and press the con-
troller.
2.Select the field by moving the controller and
adjust the air distribution by turning the
controller.
Setting intensity of AUTO program
To meet your individual needs, you can weaken
or strengthen the intensity of the automatic cli-
mate control.
1.Select "Automatic programs" and press the
controller.
2.Select the desired intensity and press the
controller.
Convertible program
When the convertible top is opened, the con-
vertible program can also be selected. In the
convertible program, the automatic climate control is optimized for driving with the convert-
ible top open. In addition, the air supply is
increased as the speed increases.
If the convertible program has been selected, it
is automatically active every time the top is
opened.
The effect of the convertible program can
be greatly enhanced if the wind deflector
is installed.<
Ventilation
1Serrated dial for smoothly opening and
closing air vents
2Lever for changing the airflow direction
Do not drop any foreign bodies into the
vent outlets, as otherwise these could be
catapulted outwards and lead to injuries.<
Ventilation for cooling
Adjust the vent outlets to direct the flow of cool
air in your direction, for instance, if the interior
has become too warm, etc.
Draft-free ventilation
Set the vent outlets so that the air flows past
you and is not directed straight at you.
Microfilter/activated-charcoal filter
The microfilter removes dust and pollen from
the incoming air. The activated-charcoal filter
provides additional protection by filtering gas-
eous pollutants from the outside air. Your BMW
center replaces this combined filter as a stan-
dard part of your scheduled maintenance.
You can have more detailed information shown
on the Control Display, refer to page70.

Under the hood
176
Topping off engine oil
Wait until the level has dropped to just above
the lower dipstick mark before adding oil. When
it falls to this level, a message also appears on
the Control Display.
Refill the oil within the next 125 miles/
200 km, otherwise engine damage could
result.<
Store oil, grease etc., well out of the reach
of children; always observe all warning
labels on the containers.<
Oil change
Have oil changes carried out only by a BMW
center.
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.
Use only approved BMW High Performance
Synthetic Oil.
If you are unable to obtain BMW High Perfor-
mance Synthetic Oil, you can add small
amounts of another synthetic oil between oil
changes. Use only oils with the API SH specifi-
cation or higher.
Ask your BMW center for details concern-
ing the specific BMW High Performance
Synthetic Oil or synthetic oils which have been
approved.<
You can also call BMW of North America at
1-800-831-1117 or visit this website:
www.bmwusa.com to obtain this information.BMW engines are designed to operate
without additives, and their use could
even lead to damage in some cases.<
Viscosity ratings
Viscosity is the oil flow rating as defined in SAE
classes.
The selection of the correct SAE class depends
on the climatic conditions in the area where you
typically drive your BMW.
Approved oils are in SAE classes 5W-40
and 5W-30.<
These oils may be used for driving in all ambient
temperatures.
Coolant
Do not open the cooling system when the
engine is hot. Escaping coolant can cause
burns.<
Coolant consists of water and coolant additive.
Not all commercially available additives are suit-
able for your BMW. Ask your BMW center for
suitable additives.
Only use suitable additives, as otherwise
engine damage may result. The additives
present a health hazard.<
Always observe all applicable environ-
mental laws and regulations when dis-
posing of used coolant additives.<
Checking coolant level
1.The engine must be at ambient tempera-
ture.

Everything from A to Z
202 Cold start, refer to Starting
engine54
"Communication"152
"Communication
settings"159
Compact disc
– refer to CD changer143
– refer to CD player143
Computer74
– clock, 12h/24h clock
mode78
– displays on Control
Display74
– hour signal78
"Concert hall"135
Condition Based Service
CBS178
"Confirmation"30
Confirmation signals for
locking and unlocking30
Connecting a vacuum cleaner,
refer to Socket103
Consumption display, refer to
Average fuel
consumption74
"Continue guidance to
destination?"125
Control Center16
– adjusting brightness77
– assistance window20
– automatic climate control96
– changing settings19,77
– changing the menu page19
– changing time and date78
– confirming selection or
entry19
– controller16
– display, menus16
– language selection78
– menu item selection19
– menu navigation17
– operating elements16
– selecting units of
measurement and display
format77
– start menu17
– status information20
– symbols17
Control Display16Controller, refer to Control
Center16
Controls, refer to Cockpit10
Convenience operation
– convertible top30,31
– glass sunroof30,31
– windows30,31
Convenience start, refer to
Starting engine54,55
Convertible
– convertible program for
automatic climate control97
– opening and closing
windows36
– rollover protection
system87
– top39
– wind deflector42
Convertible top
– care, refer to the Caring for
your vehicle brochure
– convenience operation31
– emergency closing41
– manual closing in the event
of an electrical
malfunction41
– opening and closing40
Coolant176
– level176
Cooling, maximum95
Cornering Brake Control
CBC81
Country of destination for
navigation116
Courtesy lighting93
Cruise control61
– active cruise control62
Cruising range74
Cup holders103
Curb weight, refer to
Weights192
"Current position"125
Current position
– displaying125
– entering120
– storing120
"Customer Relations"162
Cylinders, refer to Engine
data192
D
Dashboard, refer to
Cockpit10
Dashboard lighting, refer to
Instrument lighting93
Data192
– capacities195
– dimensions193
– engine192
– weights192
"Date"79
Date69
– setting78
"Date format"79
Daytime driving lamps91
DBC Dynamic Brake
Control81
– malfunction83
– warning lamp83
"Deactivated"47
Deactivating front passenger
airbag, Coupe52
Decommissioning the vehicle,
refer to the Caring for your
vehicle brochure
Deep water, refer to Driving
through water109
Defrosting windows95
Defrosting windows and
removing condensation95
Defrosting windshield, refer to
Defrosting windows95
Defrost position, refer to
Defrosting windows95
"Delete address book" for
navigation121
"Delete all numbers" on the
portable phone155
"Delete data" for
navigation121
"Delete" for portable
phone154
Destination address
– deleting121
– entering115

Reference 203
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Destination for navigation
– destination list119
– entry115
– home address122
– selecting from address
book120
– selecting using
information118
– storing120
Destination guidance124
– bypassing route
sections128
– canceling voice
instructions51
– changing specified
route122
– displaying route127
– distance and arrival124
– interrupting125
– starting124
– terminating/continuing125
– voice instructions126
– volume of voice
instructions126
Destination list119
Destinations recently driven
to119
"Dial" for portable phone152
"Dial number"152
"Diamond button"51
Digital clock69
Dimensions
– Convertible194
– Coupe193
Dipstick for engine oil175
Directional indicators, refer to
Turn signals60
Direction announcements,
refer to Voice
instructions126
Direction instructions, refer to
Voice instructions126
Directory, refer to Phone
book153
Directory for navigation, refer
to Address book120
Disc brakes109Displacement, refer to Engine
data192
Display, refer to Control
Center16
"Display off"21
Displays, refer to Instrument
cluster12
"Display settings"77
Displays on the windshield,
refer to Head-Up Display88
Disposal, vehicle battery183
Distance, refer to
Computer75
Distance control, refer to
Active cruise control62
"Distance to dest."75
Distance to destination, refer
to Computer75
Distance warning, refer to
PDC Park Distance
Control80
Door entry lighting93
Door keys28
Door lock31
"Door locks"29
Doors
– manual operation31
– remote control30
DOT Quality Grades170
Draft-free ventilation97
"Driver's door only"29
Driving lamps, refer to Parking
lamps/low beams91
Driving notes108
Driving route, refer to
Displaying the route127
Driving stability control
systems82
Driving through water109
Driving tips, refer to Driving
notes108
Drying the air, refer to Cooling
function95
DSC Dynamic Stability
Control82
– indicator lamp13,83
– malfunction83DTC Dynamic Traction
Control82
– activating82
– indicator lamp13,82
DVD for navigation114
Dynamic Brake Control
DBC81
Dynamic Driving Control59
"Dynamic route" for
navigation122
Dynamic Stability Control
DSC82
– indicator lamp13,83
Dynamic Traction Control
DTC82
– indicator lamp13
E
Easy entry, refer to Entry to
the rear48
Easy entry/exit50
EBV, refer to Electronic brake-
force distribution81
"Edit address" for
navigation121
Eject button, refer to Buttons
on CD player132
Electrical malfunction
– convertible top41
– door lock31
– driver's door31
– fuel filler door166
– glass sunroof38
– luggage compartment lid33
– storage compartment, hotel
function32
Electric steering wheel
adjustment50
Electronic brake-force
distribution81
Emergency Assistance, refer
to Roadside Assistance186
Emergency call185