2004 BMW 745i air condition

Controls
105Reference
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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
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
Adjust the vents to direct the flow of cool
air in your direction, for instance, if the inte-
rior 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 page 107.
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 dials 3
* control the amount of
cooled air in the flow from the vent outlets:
Turn towards blue: colder
Turn towards red: warmer.

A congenial climate
106 This function allows you to make minor
adjustments for maximum comfort while
also letting you vary temperatures within
the storage compartment.
Switching off automatic climate
control*
The air supply, the heater and
the air conditioner are all
switched off. You can restart
the automatic climate control
by pressing any of its buttons
except the REST button.
Settings using the Control Center
With the ignition on, select "Climate". You
can use the Control Center to set the fol-
lowing:
>"Left
C Right":
Separate settings for driver and front
passenger
>Adjusting and adapting air-distribution
patterns, refer to page 107
>Adjusting temperature for the upper
body, refer to page 107
>Storing and calling up an individual set-
ting for interior ventilation outlets, air
distribution and temperature, refer to
page 107.
Select the second page of the "Climate"
menu. >"Indep. ventil.":
For information on activating and deac-
tivating the independent ventilation and
setting the timer, refer to page 109
>"Seat temp.":
Adjusting temperature distribution
while the seat heating is on, refer to
page 50
>"Extra":
Switching the rear air conditioner or
rear cooler on and off, refer to
pages 108 and 113.
Select the first page of the "Climate"
menu.
Automatic air distribution and supply
"AUTO":
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 cli-
mate to adapt to external influences: sum-
mer, winter.
"Bi-Level":
This program operates in the same way
as the AUTO program, but with airflow
directed toward upper body and into the
footwells.

A congenial climate
108 Select "Individual" and confirm. The AUTO
program is deactivated.
Microfilter/activated-charcoal filter
The microfilter removes dust and pollen
from the incoming air. The activated-char-
coal filter provides additional protection by
filtering gaseous pollutants from the out-
side air. Your BMW center replaces this
combined filter as a standard part of your
scheduled maintenance.
You can select a display of more detailed
information in the Service Interval Display,
refer to page 81.
Rear air conditioner*
The following settings and operating
modes can be selected and adjusted sep-
arately 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 cooling 2
>press the OFF button 4 again
>in the Control Center, select "Rear air
cond." and confirm, refer to Switching
on/off using the Control Center.
When you switch on the rear air con-
ditioner, you simultaneously switch
on the rear cooler, refer to page 113.<
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.

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Switching on/off using the Control
Center
1.With the ignition on, select "Climate"
2. Select the second page of the
"Climate" menu
3.Select "Extra" and confirm
4.Select "Rear air cond." and confirm.
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
to switch off the system.
Rear ventilation
Use the lever 1 to vary the airflow direction.
For additional information on rear ventila-
tion options, refer to page 105.
Independent ventilation
System operation is controlled using the
Control Center. You can set two different
times for the system to start.
The independent ventilation blows air into
the passenger compartment to lower inte-
rior temperatures.The system remains on for 30 minutes.
You can also switch the system on and off
manually. Since the system uses a sub-
stantial amount of electrical current, you
should refrain from activating it twice in
succession without allowing the battery to
be recharged in normal operation between
use.
The independent ventilation is available for
preprogrammed operation at outside tem-
peratures above approx. 597/156 and
for direct activation at any temperature, but
is not operational when the vehicle is
underway.
The air enters the passenger compartment
through the vent outlets in the instrument
panel, which can be adjusted for both
direction and airflow. These outlets must
be open for the system to operate.
Switching on and off directly
1.Switch on the radio mode
2.Select "Indep. ventil." on the second
page of the "Climate" menu and con-
firm.
Select "Indep. ventil." a second time and
confirm to deactivate the system manually.
Preselecting the switch-on time

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3Rear window blind
4Switching to the other side
The side window blind cannot be
extended unless the side window is
closed. If the window is open, the blind will
rise slightly prior to immediately retracting
to its original position.<
Briefly press the safety switch in the
driver's door, refer to page 42. The
indicator lamp must light up. This precau-
tion prevents children from operating the
sun blinds using the rear switches, etc.
Before using always ensure that the sun
blind's travel path is clear and unob-
structed.
When leaving the vehicle, always remove
the remote control from the ignition lock
and close the doors; this precaution pre-
vents children from using the sun blinds
and injuring themselves, etc.<
Automatically extending and
retracting the sun blinds
You can extend and retract the sun blinds
together by pressing and holding button 3
or the button in the driver's door.
Rear cooler*
The rear cooler is located behind the rear
seats' center armrest.
Switching on/off
As of radio position, press the button,
arrow 1; the indicator lamp in the button
comes on. Vehicles with rear air conditioner:
Once switched on, the rear cooler
operates whenever the engine is running.
High temperatures in the luggage compart-
ment can affect the temperature in the rear
cooler.
Vehicles without rear air conditioner:
After the ignition has been switched off, the
rear cooler is switched off automatically
after a short period.
When a low voltage is reached, it is auto-
matically switched off to protect the vehicle
battery. The indicator lamp in the button
flashes.
In the event of a malfunction, please con-
tact your BMW center.<
Press the button, arrow 1, once again to
switch off the rear cooler.
Opening
Press button and open cooler, arrow 2.
Switching on/off using the Control
Center*
When the rear air conditioner unit is
switched on, the rear cooler operates
whenever the engine is running.<
1.With the ignition on, select "Climate"
2. Select the second page of the "Cli-
mate" menu
3.Select "Extra" and confirm
4.Select "Rear refr. box" and confirm.
Select "Rear refr. box" a second time and
confirm to switch the unit off.

Things to remember when driving
122
Things to remember when driving
Break-in procedures
To ensure that your vehicle continues to
furnish optimized economy of operation
throughout an extended service life, we
request that you devote careful attention
to the following section.
Engine and differential
Up to 1,200 miles/2,000 km:
During this initial period you should attempt
to avoid constant, steady-state operation
and vary both vehicle and engine speeds
as often as possible. Until the break-in
period has been completed you should
also refrain from exceeding the following:
>4,500 rpm or 105 mph/170 km/h.
Always obey all official speed limits.
Avoid full-throttle operation and use of the
transmission's kickdown mode during
these initial miles.
Once you have driven 1,200 miles/
2,000 km, the engine or vehicle speeds
can be gradually increased.
You should also comply with these break-in
procedures should the engine or differen-
tial need to be replaced at a later point.
Tires
Due to technical factors associated with
their manufacture, tires do not achieve their
full traction potential until after an initial
break-in period.Therefore, drive reservedly
during the first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve opti-
mized contact and wear patterns between
brake pads and rotors.
General driving notes
High temperatures
Extreme temperatures occur at the
catalytic converter on this and every
catalyst-equipped vehicle. Do not remove
the heat shields installed adjacent to vari-
ous sections of the exhaust system, and
never apply undercoating to them.
When driving, standing at idle and while
parking 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, accompanied by the risk of serious
property damage as well as personal
injury.<
Parking the vehicle
Condensation forms in the air conditioner
system during operation, and then exits
under the vehicle. Traces of condensed
water under the vehicle are thus normal.
Before driving into the car wash
1.Fold in the exterior mirrors, refer to
page 51, as otherwise they could be
damaged due to the width of the vehicle
2.Leave the remote control in the ignition
lock, as otherwise the position P of the
automatic transmission will automati-
cally be selected when the remote con-
trol is removed, refer to pages 61
and 67.
With Comfort Access, be sure to
observe the instructions on page 61
3.Release the parking brake, especially
when you have activated Automatic
Hold, refer to pages 62 and 63.
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 surface. This phenomenon is referred

Driving tips
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to as hydroplaning, and is characterized
by a partial or complete loss of contact
between tires and road surface, ultimately
undermining your ability to steer and brake
the vehicle.<
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 vehicle's engine, the electri-
cal systems and the transmission may be
damaged.<
Brake system
Braking with ABS
The best way to achieve the best response
from the ABS is to apply maximum pres-
sure to the brake pedal Ð panic stop. Since
the vehicle maintains steering responsive-
ness, you can nevertheless avoid possible
obstacles with a minimum of steering
effort.
Pulsation at the brake pedal combines with
sounds from the hydraulic circuits to indi-
cate to the driver that ABS is in its active
mode.
Do not drive with your foot resting on
the brake pedal. Otherwise, even light
but consistent pedal pressure can lead to
high temperatures, brake wear and possi-
bly even brake failure.<
Disc brakes
Driving in wet conditions
While driving in wet conditions and in
heavy rain, it is a good idea to apply light
pressure to 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
You can retain full and unimpaired braking
efficiency by downshifting to a gear in
which only minimal brake applications are
needed when descending long or steep
downhill stretches.
You can further enhance the engine's
braking effect by selecting a lower gear
in the automatic transmission's manual
mode, downshifting as far as first gear
on extremely steep stretches, refer to
page 67. This strategy helps you avoid
placing excessive loads on the brake sys-
tem.
Never allow the vehicle to coast with
the transmission in Neutral Ð or with
the engine switched off Ð as there is no
engine braking when the transmission is in
Neutral, and no power-assist for brakes
and steering when the engine is not run-
ning.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
accelerator and brake pedals and obstruct
their movement.<
Corrosion
When the vehicle is driven only occasion-
ally, 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 ten-
dency for corrosion to form on rotors, while
contaminants accumulate on the brake
pads. This occurs because the minimal
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 pul-
sating effect that even extended applica-
tion will fail to cure.
Brake pads
If the brake pad wear warning lamp
appears in the Check Control,
accompanied by a text. Please take
careful note of the additional information on
the Control Display.

Things to remember when driving
124 Warning lamp for Canadian models.
The brake pads have reached their mini-
mum pad thickness. Have them replaced
at your BMW center as soon as possible.
For your own safety: use only brake
pads that BMW has released for your
particular vehicle model. As BMW cannot
assess the suitability of other brake pads
for use on your vehicle, we are unable to
assume continued responsibility for the
vehicle's operating safety if non-approved
pads are installed.<
Cargo loading
To avoid loading the tires beyond
their approved carrying capacity,
never overload the vehicle. Overloading
can lead to overheating and increases the
rate at which damage develops inside the
tires. The ultimate result can assume the
form of a sudden air loss.<
Determining loading limit
1.Locate the following statement on your
vehicle's door pillar
*:
The combined weight of occu-
pants and cargo should never
exceed XXX lbs. or YYY kg, as other-
wise the vehicle may be damaged and
unstable driving conditions may
result.<
2.Determine the combined weight of the
driver and passenger that will be riding
in your vehicle3.Subtract the combined weight of the
driver and passenger from XXX lbs. or
YYY kg
4.The resulting figure equals the available
amount of cargo and luggage load
capacity.
For example, if the XXX amount equals
1,400 lbs. and there will be five 150-
pound passengers in your vehicle, the
amount of available cargo and luggage
load capacity is 650 lbs.:
1,400 Ibs. minus 750 Ibs. = 650 Ibs.
5.Determine the combined weight of lug-
gage and cargo being loaded on the
vehicle. That weight should not exceed
the available cargo and luggage load
capacity calculated in step 4
6.If your vehicle will be towing a trailer,
part of the load from your trailer will be
transferred to your vehicle. Consult the
manual for transporting a trailer to
determine how this may reduce the
available cargo and luggage load
capacity of your vehicle.
Load
The permitted load is the total of the weight
of occupants and cargo/luggage. The
greater the weight of occupants, the less
cargo/luggage can be transported.