2005 BMW 745i cooling

At a glance
15Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
1Glasses compartment116
2Storage compartment116
3Switching audio and video sources on/
off and adjusting volume149
4Telephone keypad, folding176
5Automatic air distribution and supply,
left side of passenger
compartment104
6Outside air/AUC Automatic recircu-
lated-air control/Recirculated air105
7Defrosting windshield and windows and
removing condensation105
8Control Display17
9Temperature, left side of passenger
compartment: turn
For maximum cooling: press105
10Glass roof, electric
*44
11Memory keys for integrated universal
remote control
*112
12Air supply, left side of passenger com-
partment: turn
To switch off automatic climate control:
press105,107
13Reading lamps102
14Hazard warning flashers
15Interior lamps102
16Air supply on right side of passenger
compartment10417Temperature, right side of passenger
compartment: turn
For residual heat utilization: press105
18Rear window defroster
19Air conditioning105
20Starting an emergency call177
21Opening the glove compartment
22Automatic air distribution and supply,
right side of passenger
compartment107
23Station/track search and CD
*, TV*
and DVD
*148
24Central locking system38
25Controller17
26Control Center buttons17
27Seat adjustment47
Heated seats
*52
Active seat ventilation
*52
Active seat for driver
*53
Seat, mirror and steering wheel
memory55

A congenial climate
104 1Automatic air distribution and supply,
left side of passenger
compartment107
2Outside air/AUC Automatic recircu-
lated-air control/recirculated air105
3Defrosting windows and removing
condensation105
4Temperature, left side of passenger
compartment105
5Maximum cooling105
6Air supply, left side of passenger
compartment105
7Switching off automatic climate
control107
8Air supply, right side of passenger
compartment105
9Temperature, right side of passenger
compartment105
10Residual heat mode105
11Rear window defroster 12Switching air conditioner mode on and
off manually105
13Automatic air distribution and supply,
right side of passenger
compartment107
14Air grill for interior temperature sensor –
please keep clear and unobstructed
15Independent ventilation110
>Activation time activated: the indica-
tor lamp comes on
>Independent ventilation switched on:
the indicator lamp flashes
All other setting options for the auto-
matic climate control can be found at
"Settings" using the Control Center, refer to
page107.
The current settings for temperature and air
supply are displayed to you in the status
line of the Control Display.
A description of the Control Center is pro-
vided on page17.<
A congenial climate
Activate the automatic mode using the
AUTO button or "AUTO" in the Control
Center, refer to page107. Select an interior
temperature you find pleasant.
The following section contains more
detailed information on the available set-
ting options.
All of the air conditioning functions,
including Maximum cooling, refer to
page105, and the Rear air conditioner,
refer to page109, are available only when
the engine is running.<
Your vehicle has been designed to
automatically select your personal
climate-control settings whenever you unlock the doors using your individually
programmed remote control.<
Automatic air distribution and supply
The AUTO program adjusts the
airflow and distribution patterns
for you while also using your
preselected temperature setting as the
basis for adjusting the interior climate to
adapt to external influences: summer, win-
ter.
The air conditioner comes on automatically
when you select the AUTO program.

Controls
105Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Temperature adjustment
You can turn to select the
desired temperatures for the
driver's and passenger sides.
Your settings appear on the
Control Display's status line.
The figures in the display provide a general
indication of interior temperature. When
you start the vehicle, this system ensures
that the selected temperature is achieved
as quickly as possible. It then maintains this
temperature, regardless of the season.
Defrosting windows and removing
condensation
This program quickly removes
ice and condensation from the
windshield and door windows.
Adjusting air supply manually
You can adjust the air supply by
turning. The automatic air sup-
ply control is operational when-
ever you see your selection rep-
resented by a bar on the
Control Display's status line. The automatic
air distribution remains in operation as
before. You can reactivate the automatic air
supply mode with the AUTO button.
Switching air conditioner mode on
and off manually
The air conditioner cools and
dehumidifies the incoming air
before also reheating it as
required, according to temperature setting.
Depending on the weather, the windshield
may fog over briefly when the engine is
started.
The air conditioner comes on automatically
when you select the AUTO program.
Maximum cooling
This program quickly provides
maximum cooling.
The temperature display reverts
to 607/166 while the system
switches to the recirculated-air mode and
starts to provide maximum air supply through the vent outlets only. For this rea-
son you should ensure that these outlets
are open before selecting this program.
Outside air/AUC Automatic
recirculated-air control/recirculated
air
You can respond to unpleasant
odors or pollutants in the imme-
diate environment by tempo-
rarily suspending the supply of outside air.
The system then recirculates the air cur-
rently within the vehicle. AUC executes this
function automatically.
Press the button repeatedly to run through
the following control sequence:
>Indicator lamps off: outside air flows
into the vehicle
>Left indicator lamp on, AUC mode: the
system detects pollutants in the outside
air and responds by blocking the supply
of outside air when required. The sys-
tem then recirculates the air currently
within the vehicle.
Depending upon air quality, in the auto-
matic mode the system may start to
alternate between its outside-air and
recirculated-air modes
>Right indicator lamp on, recirculated-air
mode: the supply of outside air into the
vehicle is permanently blocked. The
system then recirculates the air cur-
rently within the vehicle.
If condensation starts to form on the
inside window surfaces during opera-
tion in the recirculated-air mode, you
should switch it off while also increasing air
supply as required.<
Residual heat mode
The system uses the warmth
stored in the engine to heat the
interior when the ignition is off,
for instance, while the vehicle
is stopped at a school to pick
up a child.
You can adjust the automatic climate con-
trol's settings when the ignition lock is in
the radio mode. The system blows heated

A congenial climate
106 air into the interior in accordance with the
selected distribution pattern while the igni-
tion is off.
Provided that the engine has warmed
to its normal operating temperature
and the battery is charged, you can use this
function for up to 15 minutes after switch-
ing off the ignition. The LED within the but-
ton lights up to confirm compliance with
both of these conditions.<
Front ventilation
You can adjust the vent outlets for the
upper body to suit your personal require-
ments.
You can use the serrated dials 1 to open
and close the outlets through an infinitely-
variable range, while the serrated dials 2
allow you to adjust the airflow direction.
Ventilation for cooling
A d j u s t t h e v e n t s t o d i r e c t t h e f l o w o f c o o l a i r
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.
You can also individually adjust the air
temperature of the air vents for the
upper body area in the Control Center,
refer to page108.
If the ventilation grill is completely closed,
the vehicle interior is ventilated indirectly
by air vents on the upper side of the cock-
pit.<
Ventilation for storage compartment
in front armrest
You can use the serrated dial in the storage
compartment to open and close the vent.
Depending upon the temperatures
selected at the rear dials, high tem-
peratures may occur in the storage com-
partment. Close the vent as required.<
Ventilation in the rear
The serrated dials 1 allow you to open and
close the ventilation outlets through an infi-
nitely-variable range.
You can adjust the airflow direction using
the levers 2.
The serrated dials3
* control the amount of
cooled air in the flow from the vent outlets:
Turn towards blue: colder
Turn towards red: warmer.
This function allows you to make minor
adjustments for maximum comfort while
also letting you vary temperatures within
the storage compartment.

Controls
109Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Rear air conditioner*
The following settings and operating
modes can be selected and adjusted sepa-
rately on the left and right sides:
1Adjusting cooling
2Maximum cooling
3Adjusting air supply manually
4Switching off rear air conditioner
Switching on rear air conditioner
To switch on the rear air conditioner
>select maximum cooling2
>press the OFF button4 again
>select "Rear air cond." in the Control
Center and confirm, refer to Switching
on and off using the Control Center.
When you switch on the rear air con-
ditioner, you simultaneously switch
on the rear cooler, refer to page114.<
Adjusting cooling
You can also set the system to
provide the desired level of
cooling by turning. We recom-
mend setting the system for
moderate cooling. When you
start the vehicle, this system ensures that
the selected setting is achieved as quickly
as possible. It then maintains this tempera-
ture, regardless of the season.
Adjusting air supply manually
You can adjust the air supply by
turning.
Maximum cooling
This program quickly provides
maximum cooling.
The system automatically switches to the
recirculated-air mode while a high-speed
stream of air simultaneously emerges from
the vent outlets. For this reason you should
ensure that these outlets are open before
selecting this program.
Switching off rear air conditioner
The air conditioner is switched
off.
Press the button again to switch back on.
Switching on/off using Control
Center
1.With the ignition on, select "Climate"
2.Select and confirm the selection
to change to the second page of the
"Climate" menu
3.Select "Extra" and confirm your selec-
tion
4.Select "Rear air cond." and confirm
your selection.
The maximum cooling mode is auto-
matically activated when you switch
on the rear air conditioner in the Control
Center.<
Select "Rear air cond." again and confirm
your selection to switch off the system.

Under the hood
196 1.5 liter. Do not fill beyond the upper mark
on the dipstick. Excess oil can damage the
engine.
Adding engine oil
Wait until the level has dropped to just
above the lower mark or a message
appears in the Check Control before add-
ing oil.
Store oil, grease etc., well out of the
reach of children; always observe all
warning labels on the containers.<
Specified engine oils
The quality of the engine oil selected has
critical significance for the operation and
service life of an engine. BMW approves
only specific oils after confirming their suit-
ability for use in its vehicles with extensive
testing.
Use only approved BMW High Perfor-
mance Synthetic Oil.
If you are unable to obtain BMW High Per-
formance Synthetic Oil, you can add small
amounts of another synthetic oil between
oil changes. Use only oils with the API SH
specification or higher.
Ask your BMW center for details con-
cerning the specific BMW High Per-
formance 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 informa-
tion.
BMW engines are designed to oper-
ate 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 add coolant to the cooling sys-
tem when the engine is hot. Escaping
coolant can cause burns.<
Coolant consists of water and the addition
of antifreeze and anticorrosion agent. Not
all commercially available additives are
suitable for your BMW. Ask your BMW cen-
ter for suitable additives.
Only use suitable additives, as other-
wise engine damage may result. The
additives present a health hazard; observe
the instructions on the containers.<
Always observe all applicable rules
and regulations for environmental
protection when disposing of used anti-
freeze and anticorrosion agents.<
Checking coolant level
1.The engine must be at ambient temper-
ature
2.Turn the cap of the expansion tank
counterclockwise to allow any accumu-
lated pressure to escape, then continue
turning to open
3.The coolant level is correct when the
coolant extends to between the MIN
and MAX marks on the filler neck, refer
to the diagram adjacent to the filler neck

Everything from A to Z
218
Everything from A to Z
Index
A
A/C operation
– automatic climate
control105
"ABC..." for navigation132
ABS Antilock Brake
System92
– indicator lamp13
ACC, refer to Active cruise
control75
"ACCEPT" for
navigation137,143
Accepting call
– automatic177
– during a call179
Accessories, refer to Your
individual vehicle5
Accident, refer to
– Giving and receiving
assistance209
– Roadside Assistance182
"ACTIVATE",
BMW Assist182
Activated-charcoal
filter108
Active cruise control75
– malfunction80
Active head restraints,
front49
Active seat53
Active seat ventilation52
Adapter for spare key35
Adaptive Head Light101
Address
– deleting143
– displaying142
– entering143
– storing142
– storing current
position143
"Address book" for
navigation142
Adjust cooling capacity of
rear air conditioner109Adjusting interior
temperature105
Adjusting seats47
Air, drying, refer to
A/C operation105
Airbags98
– indicator lamp13
– safe sitting position46
Air conditioner in the
rear109
Air conditioner mode105
Air conditioning in rear109
Air conditioning while
parked110
Air distribution
– automatic climate
control104,107
– individual108
Airing, refer to
Ventilation106,110
Air jets, refer to
Ventilation106,110
Air pressure, refer to Tire
inflation pressure188
Air recirculation, refer to
Recirculated air105
Air supply
– automatic climate
control105
– rear air conditioner109
Air vents, refer to
Ventilation106
AKI, refer to Fuel
specifications187
Alarm system42
– avoiding unintentional
alarms43
All-season tires, refer to
Winter tires193
Altering stretch of road140
Alternate route, refer to
Detour140
"AM..."
– audio mode148
– radio152,154AM waveband152
"ANGLE" for
DVD mode169
Antenna174
Antenna for portable
phone174
Antifreeze
– coolant196
– washer fluid73
Antilock Brake System ABS
– indicator lamp13
Anti-theft alarm system35
– refer to Alarm system42
Anti-trapping mechanism
– glass roof, electric45
– power windows44
Armrest, refer to Center
armrest115,118
"Arrow display" for
navigation139,140
Arrow display for
navigation140
"AS ADDRESS", navigation
– creating directory142
– current position143
– destination entry133
– destination list137
– home address142
– recent destinations136
"AS DEST.", navigation
– recent destinations136
Ashtray117
– front117
– rear117
Assist182
Assistance system, refer to
DSC Dynamic Stability
Control93
Assistance window
– help texts22
– refer to Control Center22
– status lines23
AUC Automatic
recirculated-air
control105

Reference 221
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Coin holder, refer to
Storage
compartments115
Cold start, refer to Starting
engine63
"Color" in TV mode164
Comfort Access37
– changing battery37
– observe in the car
wash122
Comfort features14
Comfort mode, vehicle95
Comfort seat47
– in rear48
Comfort starting, refer to
Starting engine63
"Comm.",
Control Center24
Compact Disc, refer to
– CD changer160
– CD player158
Compartments, refer to
Storage
compartments115
Computer85
– "BC"87
– Control Display screen
contents87
Condensation, refer to
A/C operation122
Condition Based Service
CBS198
Configuring adjustments56
"CONFIRM", vehicle83
Connecting a car vacuum
cleaner, refer to Lighter
socket117
Consumption, refer to
Average consumption86
Consumption display,
refer to
– Control Display screen
contents87
– Fuel gauge85
Contents3
"Contrast" in TV mode164
Contrast in TV mode164Control Center17
– adjusting the
brightness90
– assistance window22
– automatic climate
control107
– changing menu page19
– changing settings89
– confirming selection or
entry18
– display, menus21
– displaying help text22
– language selection89
– lists19
– menu item selection18
– menus21
– rear24
– selecting units of measure
and display format89
– setting time and date90
– status lines23
– symbols20
– symbols and lists19
Control Display18
– rear24
Controller, refer to
Control Center17
Controls10,14
– refer to Cockpit10,14
Convenience operation
– from inside38
– from outside36,38
– glass roof, electric36,38
– windows36,38
Coolant196
– indicator lamp83
– level196
– temperature gauge83
Cooler, refer to Rear
cooler114
Cooling
– maximum105,109
– refer to Temperature105
Cooling system196
Copyright2
Cornering Brake Control
CBC92
Creating voice address
book143Cruise control73,75
– indicator lamp11
– multi-function steering
wheel11
Cruising range86
Cup holder, refer to
Beverage holders116
Curb weight, refer to
Weights216
Current fuel
consumption86
Current position
– correcting143
– displaying143
– entering143
– storing143
Cylinders, refer to Engine
specifications214
D
Dashboard10,14
Data214
– dimensions215
– engine214
– filling capacities217
– technical214
– weights216
"Date"90
Date90
– changing90
– display format89
– displaying90
Daytime driving lamps100
DBC Dynamic Brake
Control94
– indicator lamp13
Defect
– door lock38
– fuel filler door186
– glass roof, electric45
– luggage compartment
lid41
Defective lamp201
Defroster
– rear window104
– windshield105
Defrosting position, refer to
Defrosting windows105