2003 BMW 540I SEDAN maintenance

107n
OverviewControlsMaintenanceRepairsDataIndex
Air conditioningTemperature
The graduations on the dial
provide general reference
values for the interior temper-
ature. We recommend 70 7
(22 6) as a comfortable setting. When
you start the vehicle, this system
adjusts the air to the selected tempera-
ture as quickly as possible, and then
maintains that temperature constantly.
Air distribution
You can direct the emerging
air toward the windows ,
toward your upper body or
into the footwell . All inter-
mediate settings are also available. In
the setting, there is a low flow of air
onto the windows to keep them free of
condensation.
Air supply
You can control the emerging
air's flow rate through an infi-
nitely-variable range. The
heating and ventilation
become more and more effective as the
air supply settings are increased. In the
"0" setting, the blower and climate con-
trol are switched off and the outside air
supply is blocked.
Rear window defroster
The indicator lamp comes
on to indicate that the rear
window defroster is in operation. The
rear window defroster switches off
automatically.
Cooling
The air conditioning cools
and dehumidifies the
incoming air before reheating it to the
selected temperature. Depending on
the weather, the windshield may fog
over briefly when the engine is started.
You can reduce condensation forming
on the windows by switching on the air
conditioning.
Condensation forms in the air
conditioning system during opera-
tion, which then exits under the vehicle.
Traces of condensed water of this kind
are thus normal.<
Recirculated-air mode
You can respond to
unpleasant odors in the sur-
rounding environment by using this
mode to temporarily suspend the flow
of outside air into the vehicle's interior.
The system then recirculates the air
currently within the vehicle.
If your vehicle is equipped with a multi-
function steering wheel
featuring a
recirculated-air button then you can
also select the recirculated-air mode
from this location (refer to page 22).
If the windows should fog over in
the recirculated-air mode, switch
the recirculated-air mode off and
increase the air supply as required.<

108n
Air conditioningDraft-free ventilation You can adjust the vent outlets for the
upper body area for optimal personal
comfort:
1 Rotary dials for opening and closing
the vent outlets through an infinitely-
variable range
2 Levers for adjusting airflow direction
3 Rotary dial allows you to control the
temperature of the airflow as desired:
>Turn toward blue Ð colder
>Turn toward red Ð warmer.390de685
Rear passenger area ventilation1 Rotary dial for opening and closing
the vent outlets through an infinitely
variable range
2 Levers for selecting airflow direction.
The air that flows out here is somewhat
cooler than the air delivered to the foot-
well.Microfilter The microfilter removes dust and pollen
from the incoming air. Your BMW
center will replace it during routine
maintenance. A substantial reduction in
airflow indicates that the filter needs to
be replaced early.390de687
To defrost windows and remove
condensation 1. Use the rotary temperature dial to set
the system for an interior tempera-
ture that you find comfortable, such
as 70 7 (22 6)
2. Set the air distribution rotary dial
to
3. Set the blower/air supply rotary dial
completely to the right
4. Close the vent outlets in the rear
seating area
5. Switch on the rear window defroster
to defrost the rear window.390us710

109n
OverviewControlsMaintenanceRepairsDataIndex
1 Airflow directed toward the wind-
shield and side windows
2 Airflow for the upper body
area113
3 Footwell ventilation4 Rear footwell ventilation
5 Airflow for the upper body area in
the rear113
6 Automatic air distribution1117 Individual air distribution111
8 Temperature control Ð
left-hand side111
9 Display for temperature and
air supply111Automatic climate control
*
390us743

111n
OverviewControlsMaintenanceRepairsDataIndex
Automatic climate control
*
Tips for pleasant drivingUse the automatic system, that is,
press AUTO button 6. Select an interior
temperature that you find comfortable.
Detailed setting options are described
for you in the following section.
Your BMW center can program
the settings of your vehicle in such
a manner that, when you unlock the
vehicle with your individualized key,
your own personalized setting for the
automatic climate control is initiated.< Automatic air distribution
The AUTO program
assumes the adjustment of
the air distribution and the air supply for
you and also adapts the temperature to
external influences (summer, winter) to
meet preferences you can specify.
Individual air distribution
You can cancel the AUTO
program by selecting
specific distribution patterns
to suit your own individual
requirements. While the
AUTO program is then deactivated, the
automatic airflow control remains in
operation. The system directs air to the
windows , the upper body and
into the footwells . You can reacti-
vate the automatic air distribution mode
by selecting the AUTO button.
Temperature
You can make individual
temperature settings on the
driver's side or the front
passenger side. Your selection appears
in display 7. The numbers that appear
in the display are reference figures for
interior temperature. We recommend a
setting of 72 7 (22 6) for a congenial
interior climate, even when the air con-
ditioner is in operation. When you start
the vehicle, the system ensures that the
selected temperature is achieved as
quickly as possible. It then maintains
this temperature, regardless of the
season.
Air supply
AUTO appears in
display 9, while the AUTO
program automatically controls the flow
of incoming air, refer to overview on
page 109. You can use "+" and "Ð" to
vary the airflow. When your setting is
displayed by bars, the automatic airflow
is switched off. Automatic air distribu-
tion maintains its setting. You can reac-
tivate the automatic airflow by pressing
the AUTO button.
When you press "Ð " during operation at
minimum blower speed all displays are
canceled: the blower, heating and air
conditioner are switched off. The out-
side air supply is deactivated. By
pressing any button of the automatic
climate control (except the MAX
button 16), you can switch the system
back on.
To defrost windows and remove
condensation
This program quickly
removes ice and conden-
sation from the windshield and the side
windows.

113n
OverviewControlsMaintenanceRepairsDataIndex
Automatic climate control
*
Residual heating mode
The heat which is stored in
the engine is utilized for
heating the interior when the engine
has been switched off (while waiting at
a railroad crossing, for instance).
In ignition key position 1, you can alter
the settings of the automatic climate
control. In ignition key position 0, the
system automatically directs heated air
to the windshield, side windows and
footwells.
This function is available for oper-
ation when the outside tempera-
ture is below approx. 59 7 (15 6),
with the engine warm from recent oper-
ation and an adequate charge in the
battery. The LED on the button will light
up when all conditions have been
met.<
Draft-free ventilationYou can adjust the vent outlets for the
upper body area completely for your
personal comfort:
1 Rotary dials for infinitely-variable
opening and closing of the vent out-
lets
2 Selector levers for airflow direction
3 Rotary dial allows you to control the
temperature of the airflow as desired:
>Turn toward blue Ð colder
>Turn toward red Ð warmer.390de685
Rear passenger area ventilation1 Rotary dial for infinitely-variable
opening and closing of the vent out-
lets
2 Selector levers for airflow direction
3 The rotary dial operates in the same
way as the front dial to adjust the
temperature of the emerging air.390de686

115n
OverviewControlsMaintenanceRepairsDataIndex
The conceptThe BMW Universal Transmitter
replaces up to three hand-held transmit-
ters to control different devices such as
a garage door opener, alarm systems or
a door locking system. The BMW Uni-
versal Transmitter recognizes and
"learns" the transmitted signal from each
of the original hand-held transmitters.
The signal of an original hand-held
transmitter can be programmed on one
of the three channel keys. Following
that, each of the devices can be actu-ated with the appropriately-programmed

channel key. The indicator lamp flashes
to confirm transmission of the signal.
Before you sell your vehicle, the pro-
grammed channel keys should be
cleared. Refer to page 117 for the
description of this process.
To prevent potential injuries or
damage during the programming
operation and before every remote trig-
gering of a programmed device using
the BMW Universal Transmitter, be sure
that there are no persons, animals or
objects within the range of movement
of the respective device. Also, comply
with the safety precautions of the orig-
inal hand-held transmitter.<
To Canadian residents:
During programming, your hand-
held transmitter may automatically stop
transmitting after two seconds. This
may not be long enough to program the
BMW Universal Transmitter. If you are
programming from one of these hand-
held transmitters, the Universal Trans-
mitter's lamp may begin to flash in a
series of double flashes. If this occurs,
continue to hold the key on the Uni-
versal Transmitter while you reactivate
your hand-held transmitter. You may
have to repeat this function several
times while programming.<
Before programming, read the
"User's information" section on
page 117.<
The original hand-held transmitter
If this symbol is depicted on the
packaging or in the user's
instructions for the original
hand-held transmitter, it may be
assumed that this original hand-held
transmitter is compatible with the BMW
Universal Transmitter.
Checking for the conversion codeIn order to determine whether the orig-
inal hand-held transmitter is equipped
with a conversion-code system, you
may either refer to the instructions for
the original hand-held transmitter or
program a channel key as described in
the left column on page 116 under
"Programming."
Following that, press and hold the pro-
grammed channel key of the BMW Uni-
versal Transmitter. If the indicator lamp
of the BMW Universal Transmitter
flashes rapidly for two seconds and
then stays on continuously, the original
hand-held transmitter is equipped with
a conversion-code system. If the con-
version-code system is available, pro-
gram the channel keys as described in
the right-hand column on page 116
under "Programming a hand-held trans-
mitter with change code."
If you have additional questions,
please consult your BMW center
or call 1-800-355-3515.<
BMW Universal Transmitter
*

117n
OverviewControlsMaintenanceRepairsDataIndex
BMW Universal Transmitter
*
1. Program the BMW Universal Trans-
mitter as described above under
"Programming" on the previous page
2. Press and hold the programming key
on the receiver of the device for
about two seconds or until the pro-
gramming lamp on the device comes
on
3. Press the desired channel key of the
BMW Universal Transmitter three
times.
If you have additional questions,
please consult your BMW center.<
Clearing the channel keys
Read and comply with the safety
precautions on page 115.<
The memory of individual channel keys
cannot be deleted. However, the three
channel keys can be cleared together in
the following manner:
>Press and hold the two outer channel
keys of the BMW Universal Trans-
mitter until the indicator lamp flashes,
and then release the keys.
All of the channel keys are cleared.
User's informationDo not use this BMW Universal Trans-
mitter with any garage door opener that
lacks safety "stop" and "reverse" fea-
tures as required by federal safety stan-
dards (this includes any garage door
opener model manufactured before
April 1st, 1982).
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
(1) This device may not cause harmful
interference, and
(2) This device must accept any inter-
ference received, including interference
that may cause undesired operation.

119n
OverviewControlsMaintenanceRepairsDataIndex
Cellular phone
*
Beverage holder
*
Ashtray, front
Hands-free systemOn vehicles with telephone prepara-
tion
*, the hands-free speaker is posi-
tioned in the headliner.
For further information on the cellular
phone, refer to the separate Owner's
Manual.
390de639
Two holders for canned drinks have
been provided in the front center con-
sole (illustration).
Press to open; fold back inward to
close.390us736
To emptyPress the edge of the lid (arrow):
The ashtray moves up and can be
removed.
On vehicles equipped with a non-
smoker's package, the insert is
removed in the same way.390de742