2004 BMW 545I SEDAN start

Controls
79Reference
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Indicator and warning lamps for
Canadian models.
DTC Dynamic Traction Control
In special driving states, e.g. in deep snow,
DTC ensures maximum forward momen-
tum. The gain in forward momentum also
involves a reduction in driving stability.
DTC is active up to 45 mph/70 km/h.
Activating DTC
Press the DSC button briefly; the
DTC indicator lamp in the instru-
ment cluster lights up permanently.
You may find it useful to briefly activate
DTC under the following special circum-
stances:
>When rocking the vehicle and starting
off in deep snow or on loose road sur-
faces
>When ascending snow-covered hills,
and when driving in deep or on hard-
packed snow
>When driving with snow chains.
When DTC is active, DSC provides
only limited system response up to a
speed of approx. 45 mph/70 km/h. Control
intervention for stability-enhancement is
reduced.<
Deactivating DTC again
Press the DSC button again; the DTC indi-
cator lamp in the instrument cluster goes
out. DSC is available once again without
restriction.
Deactivating DSC
Press the DSC button for at least 3 sec-
onds; the DSC indicator lamp in the instru-
ment cluster lights up permanently. DSC is
deactivated.
Deactivating DSC automatically deacti-
vates DTC as well. The systems for
enhancing stability and traction are deacti-
vated, and there is no active braking inter-
vention or torque control.
A message appears on the Control Display.
Please note any supplementary information
that appears there.
To maintain optimal stability, drive
with the system on whenever possi-
ble.<
Reactivating DSC
Press the DSC button again briefly; the
indicator lamp in the instrument cluster
goes out. DSC is now activated.
The laws of physics cannot be
repealed, even with DSC. An appro-
priate driving style always remains the
responsibility of the driver. Therefore, do
not reduce the additional safety margin
again by taking risks.
Do not make any modifications to the DSC
system. Never allow anyone other than
authorized professional technicians to
carry out service or repairs on the DSC sys-
tem.<
DBC Dynamic Brake Control
When you apply the brakes rapidly, this
system automatically produces the maxi-
mum braking force boost and thus helps to
achieve the shortest possible braking dis-

Technology for comfort, convenience and safety
80 tance during panic stops. This system
exploits all of the benefits provided by ABS.
Do not reduce the pressure on the brake
pedal for the duration of the brake applica-
tion. When the brake pedal is released,
DBC is deactivated.
In the event of a malfunction, the
warning lamp in the instrument
cluster lights up yellow.
Have the system checked and repaired at
your BMW center as soon as possible.
Please note any information that appears
on the Control Display.
Warning lamp for Canadian models.
Active roll stabilization*
The concept
Active roll stabilization minimizes body roll
and optimizes vehicle stability during cor-
nering and evasive maneuvers.
Dynamic stabilizers at the front and rear
axles form the basis for active roll stabiliza-
tion. Suspension compliance adapts to suit
driving conditions, varying from perfor-
mance-oriented during cornering to
smooth and comfort-oriented when the
vehicle is proceeding in a straight line.
The system assumes operational status
each time you start the engine.
Driving with active roll stabilization
During vehicle operation, the system con-
tinuously runs through closed-loop control
cycles lasting only fractions of a second.
In case of malfunction
The symbol in the instrument clus-
ter lights up and a message
appears on the Control Display.
Please note any supplementary information
that appears there.
You can find more information on the
Check Control starting on page 68. If the active roll stabilization system is
deactivated in response to malfunc-
tion, please remember to adapt your speed
accordingly, especially in curves.
The suspension will be noticeably softer
and the vehicle will display a greater ten-
dency to tilt during cornering and in cross-
winds.
If a message stating that you should stop
appears on the Control Display in addition
to the red symbol, stop immediately and
switch off the engine. In this case the oil
level in the reservoir may have dropped
below the minimum, possibly owing to a
leak in the hydraulic system.
Please note any supplementary information
that appears on the Control Display.<
Flat Tire Monitor
The concept
The Flat Tire Monitor keeps track of the
inflation pressures in the four fitted tires as
you drive. The system provides an alert
whenever the inflation pressure drops sig-
nificantly in relation to the pressure in
another tire.
The check of the tire inflation pressure is
based on monitoring the relative speeds of
the wheels. A flat tire is detected and
reported on the basis of a deviation in cer-
tain speed ratios.
Functional requirement
So that the Flat Tire Monitor can learn the
correct inflation pressure, please perform
the following:
1.Check the inflation pressures in all tires
2.Compare with the inflation pressure
table on page 170 and correct if neces-
sary
3.Initialize the system.
Limits of the system
The Flat Tire Monitor cannot indicate
sudden severe tire damage caused
by outside factors and does not detect a

Controls
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natural, even pressure drop in all four
tires.<
In the following situations, on the other
hand, there can be delays in detecting tire
pressure losses, and even system failure:
>When you are driving on snow-covered
or slippery road surfaces
>If you are using a sports driving style:
slip on the drive wheels, high lateral
acceleration
>False alarms and undetected loss of
pressure may occur when you are driv-
ing with snow chains fitted
>When you are driving with the compact
wheel, the Flat Tire Monitor is unable to
function.
Initializing the system
Perform the initialization immediately
after correcting the inflation pressure,
after changing a tire or changing a wheel or
all wheels. A drive is necessary for this pur-
pose.<
Control Center, for principle details, refer to
page 16:
1.Before beginning driving, start the
engine, but do not drive off
2.Open the menu
3.Select "Vehicle settings" and press the
controller
4.Select "FTM" and press the controller
5.Select "Set tire pressure" and press the
controller
6.Select "Yes" and press the controller
7.Drive off.
The message "Initializing" is displayed.It takes a few minutes before the Flat Tire
Monitor can detect and report a flat tire.
After the initialization is completed, the
message "Active" is displayed.
If a flat tire is detected during initialization,
a message appears on the Control Display.
When driving with snow chains or
with the compact wheel, do not initial-
ize the system.<
Flat tire
Indicator lamp
The symbol in the instrument clus-
ter lights up in red and a simulta-
neous message appears on the
Control Display. In addition, an acoustic
signal sounds.
Please note any supplementary information
that appears on the Control Display. You
can find more information on the Check
Control starting on page 68.
1.Reduce speed and stop the vehicle
carefully. Avoid sudden braking and
steering maneuvers
2.Identify damaged tire
If identification is not possible,
contact your BMW center.<
3.Replace the damaged wheel, refer to
Changing a tire on page 187.
Vehicles with run-flat tires:
1.Cautiously reduce the vehicle speed to
below 50 mph/80 km/h. Avoid sudden
braking and steering maneuvers. Do
not exceed a vehicle speed of 50 mph/
80 km/h
Due to the reinforcement on the
edges of the run-flat tires, inflation
pressure loss can not usually be recog-
nized from the outside, refer to Run-flat
tires on page 175.<
2.To continue driving, comply with the
instructions for driving with damaged
tires on page 175.

Controls
85Reference
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Navigation
Entertainment
Mobility
Head-Up Display*
The concept
The Head-Up Display can be used to
project important information into the field
of vision of the driver, e.g. instructions of
the navigation system. You can assimilate
this information without taking your eyes off
the road.
Switching on/off
In ignition key position 2:
Press button 2 to activate or deactivate this
system.
1Instructions of the navigation system
2Cruise control or
Active cruise control
3Speed The Head-Up Display can also be activated
and deactivated with the two programma-
ble function buttons on the steering wheel.
Programing button functions, refer to
page 44.
Specifying selected displays
You can specify which information is to
appear in the Head-Up Display for a spe-
cific key.
Make all entries with the vehicle sta-
tionary. If you are inattentive, you may
be in violation of the law, and can endanger
vehicle occupants and other road users.<
Control Center, for principle details, refer to
page 16:
1.Open the start menu by pressing the
button.
1.Open the menu by pressing the con-
troller
2.Select "Display settings" and press the
controller
3.Select "HUD selection" and press the
controller

Controls
91Reference
At a glance
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Navigation
Entertainment
Mobility
>Activation time set:
The indicator lamp lights up
>Independent ventilation switched
on:
The indicator lamp flashes
15Rear window defroster
16Air grill for interior temperature sensor,
please keep clear and unobstructed
All other setting options for the automatic
climate control can be found in the "Cli-
mate" menu and in the menu on the Con-
trol Display, as of page 92.
The current setting for air distribution is dis-
played on the Control Display.
A congenial climate
To use the automatic function, press the
AUTO button. Select an interior tempera-
ture you find pleasant.
The following section contains more
detailed information on the available set-
ting options.
The cooling function is only possible with
the engine running.
Automatic air distribution and supply
The AUTO program adjusts the
air distribution to the wind-
shield and side windows,
towards the upper body and footwell as
well as the air volume, while also using your
preselected temperature setting as the
basis for adjusting the interior climate to
adapt to external influences: summer, win-
ter.
The cooling function comes on automati-
cally when you select the AUTO program.
At the same time, a condensation sensor
controls the program in such a way that
window condensation is prevented as far
as possible.
Adjusting temperature
You can turn to select the
desired temperatures for the
driver and passenger sides.
The figures on the display pro-
vide a general indication of inte-rior temperature. A pleasant adjustment is
727/226. When you start the vehicle, the
system ensures that the selected tempera-
ture is achieved as quickly as possible. It
then maintains this temperature, regard-
less of the season.
Defrosting windows and removing
condensation
This program quickly removes
ice and condensation from the
windshield and front side win-
dows.
Adjusting the air volume manually
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 also reheating it as
required, according to the temperature set-
ting. Depending on the weather, the wind-
shield may fog over briefly when the engine
is started.
The cooling function comes on automati-
cally when you select the AUTO program.
Maximum cooling
This program quickly provides
maximum cooling.
The system switches to the
recirculated-air mode and the
air flows at maximum air volume only from
the vent outlets for the upper body area.
For this reason you should ensure that
these vent outlets are open before select-
ing 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-

A congenial climate
92 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 in
>Right 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 require-
ments, in the automatic mode the sys-
tem alternates between its outside-air
and recirculated-air modes
>Left indicator lamp on, recirculated-air
mode: the supply of outside air is per-
manently blocked. The system then
recirculates the air currently 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
the air volume as required.
The recirculated-air mode should not be
used over a sustained longer period of
time, as the air quality inside the vehicle
deteriorates continuously.<
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 settings in ignition key position 1.
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
these conditions.<
Switching automatic climate control
off
The air volume, the heater and
the cooling function 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
You can make the settings for each specific
key.
Control Center, for principle details, refer to
page 16:
1.Turn the ignition key to position 2
2.Open the start menu by pressing the
button
3.Move the controller to the left to open
"Climate".
You can set the following:
>Air distribution, separate settings for
driver and front passenger
>Addition of cooler air for the upper body
area.
Automatic air distribution
1.Select "Vent settings" and press the
controller
2.Select "AUTO" and press the controller.

A congenial climate
94
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 vent outlets through an infi-
nitely-variable range, while the levers 2
allow you to adjust the airflow direction.
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.
You can also individually adjust the air tem-
perature of the vent outlets for the upper
body area using the Control Center.
Rear ventilation
The serrated dial 1 allows you to open and
close the vents through an infinitely-vari-
able range.
Serrated dial 2:
Turn towards blue: colder.
Turn towards red: warmer. You can adjust the airflow direction using
the levers 3.
Independent ventilation*
The independent ventilation blows air into
the passenger compartment to lower inte-
rior temperatures.
System operation is controlled using the
Control Center. You can set two different
times for the system to start.
The system remains on for 30 minutes. It
can also be switched on and off directly.
Since the system uses a substantial
amount of electrical current, you should
refrain from activating it twice in succes-
sion without allowing the battery to be
recharged in normal operation between
use.
The independent ventilation system is
available for preprogrammed operation at
outside temperatures above approx. 597/
156 and for direct activation at any tem-
perature, but is not operational when the
vehicle is underway.
The air enters the passenger compartment
through the vent outlets in the instrument
cluster, which can be adjusted for both
direction and airflow. These vent outlets
must be open for the system to operate.
Switching on and off directly
1.Turn the ignition key to position 1
Control Center, for principle details, refer to
page 16:
2.Open "Climate"
3.Select "Independent ventilation" and
press the controller
4.Select "Automatic venting" and press
the controller

Starting navigation system
114
Starting navigation system
Your navigation system can use satellites
to ascertain the precise position of your
vehicle and guide you reliably to any desti-
nation you enter.
Navigation CD/DVD
In your navigation computer, you can use
special navigation CDs/DVDs.
To ensure that your vehicle's navigation
system has access to the latest highway
network information, always load the most
recent CD/DVD version.
Navigation CDs/DVDs are available at your
BMW center.
Inserting the navigation CD/DVD
1.Insert the navigation CD/DVD with the
labeled side up
2.Allow eight seconds for the system to
scan the data from the CD/DVD.
Removing the navigation CD/DVD
In the center console:
1.Press the button
The CD/DVD is ejected from the naviga-
tion computer
2.Remove the CD/DVD.
Opening the navigation
Enter data only when the vehicle is
stationary, and always obey the traffic
regulations and road signs in the event of
any contradiction between traffic and road
conditions and the instructions issued by
the navigation system. If you do not
observe this precaution, you may be in vio-
lation of the law, and can endanger vehicle
occupants and other road users.<
Control Center, for principle details, refer to
page 16:
1.Open the start menu by pressing the
button
2.Move the controller to the right to open
"Navigation"
3.Select "Navigation" and press the con-
troller
*