engine BMW 550I 2006 Owner's Manual

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73Reference
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Energy Control
Displays the current fuel consumption. This
allows you to see whether your current driving
style is conducive to fuel economy with mini-
mum exhaust emissions.
Fuel gauge
Fuel tank capacity: approx. 18.5 gallons/
70 liters. You will find information on refueling
on page186.
If the tilt of the vehicle varies for a longer period,
when you are driving in mountainous areas, for
example, the indicator may fluctuate slightly.
Reserve
After the reserve quantity has been reached, a
message appears for a short time on the Con-
trol Display; the remaining range is shown in the
onboard computer. Below a range of approx.
30 miles/50 km, the message remains on the
Control Display.
Refuel as soon as possible once your
cruising range falls below 30 miles/
50 km, otherwise engine functions are not
ensured and damage can occur.<
Computer
Displays in instrument cluster
To display the information, press the BC button
in the turn signal lever from radio readiness.
The following information is displayed in the
specified order:
>Cruising range
>Average speed
>Average fuel consumption
Cruising range
Displays the estimated cruising range available
with the remaining fuel. The range is projected
based on the driving style over the last 20 miles/
30 km.
Refuel as soon as possible once your
cruising range falls below 30 miles/
50 km, otherwise engine functions are not
ensured and damage can occur.<
Average speed
Periods with the vehicle parked and the engine
switched off are not included in the calculations
of average speed.
To reset average speed: press BC button on
turn signal lever for approx. 2 seconds.
Average fuel consumption
The average fuel consumption is calculated for
the time during which the engine is running.
You can use the Control Display to view your
fuel consumption rate over two different dis-
tances, refer to Displays on Control Display or
Trip computer*.

Controls
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Technology for comfort, convenience and
safety
PDC Park Distance Control*
The concept
The PDC assists you when you are parking.
Acoustic signals and an optical display
* alert
you to the approach of an object from behind
your vehicle. To measure the distance, there
are four ultrasonic sensors in each bumper.
The range of these sensors is approx. 7 ft/2 m.
However, an acoustic warning first sound for
the sensors at the front and at the two rear cor-
ners at approx. 24 in/60 cm, and for the center
rear sensors at approx. 5 ft/1,50 m.
PDC is a parking aid that can indicate
objects when they are approached
slowly, as is usually the case when parking.
Avoid approaching an object at high speed,
otherwise the physical circumstances would
mean that the system warning was too late.<
Automatically activating
The system starts to operate automatically
approx. 1 second after you select reverse gear
or move the selector lever into the R position
with the engine running or the ignition switched
on.
Wait this short period before driving.
Manual activation
Press button, the LED lights up.
Manual deactivation
Press the button again; the LED goes out.
After driving approx. 165 ft/50 m or at over
approx. 20 mph/30 km/h, the system is
switched off and the LED goes out. You can
reactivate the system manually as needed.
Signal tones
When nearing an object, the position is corre-
spondingly indicated by an interval tone. Thus,
an object detected to the left rear of the vehicle
will be indicated by a signal tone from the left
rear speaker, etc. As the distance between
vehicle and object decreases, the intervals
between the tones become shorter. If the dis-
tance to the nearest object falls to below
roughly 1 ft/30 cm, then a continuous tone
sounds.
An intermittent tone is interrupted after approx.
3seconds:
>if you stop before an object that was only
detected by one of the corner sensors
>if you drive parallel to a wall
Malfunction
The LED in the button flashes and a message
appears on the Control Display. PDC is mal-
functioning. Have the system checked.
To prevent this problem, keep the sensors
clean and free of ice or snow in order to ensure
that they will continue to operate effectively. Do
not spray the sensors with high-pressure clean-
ers for long periods and maintain a distance of
at least 4 in/10 cm to them.
PDC with visual warning*
You can also have the system show distances
to objects on the Control Display. Objects that
are farther away are already shown there before
a signal tone sounds.

Technology for comfort, convenience and safety
84 iDrive, for principle details, refer to page16.
1.Open the start menu.
2.Press the controller to open the menu.
3.Select "Vehicle settings" and press the
controller.
4.Select "PDC" and press the controller.
5.Select "PDC display on" and press the con-
troller.
The PDC screen is activated.
The display appears on the Control Display as
soon as PDC is activated.
The setting is stored for the remote control cur-
rently in use.
System limits
Even with PDC, final responsibility for
estimating the distance between the
vehicle and any obstructions always remains
with the driver. Even when sensors are pro-
vided, there is a blind spot in which objects can
no longer be detected. This applies especially
in those cases where the system approaches
the physical constraints of ultrasonic measure-
ment, as occurs with tow bars and trailer cou-
plings, and in the vicinity of thin or wedge-
shaped objects. Low objects already displayed,
e.g. a curb, can disappear from the detection
area of the sensors again before a continuous
tone sounds. Higher, protruding objects, e.g.
cornices, cannot be detected. Loud sources of
sound, inside and outside the vehicle, could
drown out the PDC signal tone.<
Driving stability control
systems
Your BMW is equipped with an extended array
of systems designed to enhance and maintain
vehicle stability under extreme conditions.
ABS Antilock Brake System
ABS prevents locking of the wheels during
braking. Safe steering response is maintained
even during full braking. Active safety is thus
increased.
The ABS is operational every time you start the
engine. Braking safely refer to page117.
CBC Cornering Brake Control
When braking during curves or when braking
during a lane change, driving stability and steer-
ing response are improved further.
Electronic brake-force distribution
The system controls the brake pressure in the
rear wheels to ensure stable braking behavior.
DBC Dynamic Brake Control
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost and thus helps to achieve the short-
est possible braking distance during full brak-
ing. This system exploits all of the benefits pro-
vided by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the braking. DBC is switched
off when the brake pedal is released.
DSC Dynamic Stability Control
DSC prevents traction loss in the driving wheels
when starting off and accelerating. DSC also
identifies unstable driving conditions, such as a
loss of traction at the rear of the vehicle or slid-
ing of the vehicle in its front wheels. In these
cases, DSC helps the vehicle maintain a safe
course within physical limits by reducing engine
output and through braking actions in the indi-
vidual wheels.
The DSC is operational every time you start the
engine.

Controls
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Dynamic Drive*
The concept
Dynamic Drive minimizes body roll and opti-
mizes vehicle stability during cornering and
evasive maneuvers.
Dynamic Drive is based on active stabilizers on
the front and rear axles. Suspension compli-
ance adapts to suit driving conditions, varying
from performance-oriented during cornering to
smooth and comfort-oriented when the vehicle
is proceeding in a straight line. During vehicle
operation, the system continuously runs
through closed-loop control cycles lasting only
fractions of a second.
The system assumes operational status each
time you start the engine.
Malfunction
The warning lamp lights up yellow and
a message is shown on the Control Dis-
play. There is a malfunction in the sys-
tem. Have the system checked as soon as pos-
sible.
If a malfunction occurs, please remember
to adapt your speed accordingly, espe-
cially in curves.
The suspension will be noticeably softer and
the vehicle will display a greater tendency to tilt
during cornering and in crosswinds.
If a message stating that you should stop is
shown on the Control Display, stop at a suitable
location and switch off the engine as soon as
possible. In this case the oil level in the reservoir
may have dropped below the minimum, possi-
bly owing to a leak in the hydraulic system.
Do not continue driving, but instead contact
your BMW center.<
Sports Wagon: self-leveling
suspension
Malfunction
The warning lamp for the self-leveling
suspension lights up in yellow and a
message appears on the Control Dis-
play. A malfunction has occurred in the self-
leveling suspension. Stop and check the vehi-
cle. If it is considerably lower at the rear than at
the front, and possible also on one side – rear
left compared to rear right –, go to the nearest
BMW center or a workshop that works accord-
ing to BMW repair procedures with correspond-
ingly trained personnel. Drive with appropriate
caution in the meantime. The vehicle has
reduced ground clearance and driving comfort
may be noticeably reduced. Even if the position
of the vehicle is normal, go to the nearest BMW
center or a workshop that works according to
BMW repair procedures with correspondingly
trained personnel.
Flat Tire Monitor FTM
The concept
The Flat Tire Monitor keeps track of the infla-
tion pressures in the tires as you drive. The sys-
tem provides an alert whenever the inflation
pressure drops significantly in relation to the
pressure in another tire.
In the event of a pressure loss, the rolling radius
and therefore the rotation speed of the wheels
change. This change is detected and is
reported as a flat tire.
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be initialized for the cor-
rect tire inflation pressure.
The initialization must be repeated after
each time the tire inflation pressure is cor-
rected and after every tire or wheel change.<

Technology for comfort, convenience and safety
88
System limits
The Flat Tire Monitor cannot indicate
sudden severe tire damage caused by
outside factors and does not detect a natural,
even pressure drop in all four tires.<
In the following situations, the system could be
delayed or malfunction:
>System has not been initialized
>Driving on snowy or slippery road surface
>Sporty driving style: slip in the drive wheels,
high lateral acceleration
>Driving with snow chains
*
When you are driving with the compact wheel*
the Flat Tire Monitor is unable to function.
Initializing system
The initialization finishes during driving,
which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically. When driving with snow
chains
* or with the compact wheel*, do not
initialize the system.<
iDrive, for principle details, refer to page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Vehicle settings" and press the
controller.
4.Select "FTM" and press the controller.
5.Start engine, but do not start driving.
6.Select "Set tire pressure" and press the
controller.7.Select "Yes" and press the controller.
8.Start to drive.
The message "Initializing..." is displayed.
The initialization finishes during driving. Then
the message "Status: FTM active" appears on
the Control Display again.
Indication of a flat tire
The warning lamp lights up red. A mes-
sage appears on the Control Display.
In addition, an acoustic signal sounds.
There is a flat tire or extensive inflation pressure
loss.
1.Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.
2.Identify damaged tire.
If identification is not possible, con-
tact a BMW center.<
3.Replace the damaged wheel, refer to
Changing a wheel on page207.
Run-flat tires*
1.Cautiously reduce speed to below 50 mph/
80 km/h. Avoid sudden braking and steer-
ing maneuvers. Do not exceed a speed of
50 mph/80 km/h.
If the vehicle is not equipped with run-
flat tires, refer to page194, do not
continue driving. Continuing to drive with a
flat tire could cause severe accidents.<
2.At the next opportunity, check the air pres-
sure in all four tires.
If the tire inflation pressure in all four
tires is correct, the Flat Tire Monitor

Technology for comfort, convenience and safety
92
Head-Up Display*
The concept
With the Head-Up Display important informa-
tion is projected into the driver's field of view,
e.g. navigation instructions. This enables you to
take in this information without looking away
from the road.
Switching on/off
With the engine running or the ignition switched
on:
Press the button to activate or deactivate the
Head-Up Display.1Navigation instructions
2Display
>Cruise control
>Active cruise control
3Speed
Selecting displays
iDrive,for principle details, refer to page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Display settings" and press the
controller.
4.Select "Head-Up Display" and press the
controller.
5.Select desired information of Head-Up
Display.
6.Press the controller.
The information is shown on the Head-
Up Display.
The settings are stored for the remote key cur-
rently in use.

Lamps
94
Lamps
Parking lamps/low beams
1Automatic headlamp control*, Adaptive
Head Light
* and high-beam assistant*
2Parking lamps
3Low beams and daytime driving lamps
*
Parking lamps
In switch position2, the front, rear and side
vehicle lighting is switched on. You can use the
parking lamps for parking. For lighting on one
side for parking as an additional feature, refer to
page95.
The parking lamps drain the battery. Do
not switch them on for long periods of
time, otherwise it may no longer be possible to
start the engine.<
Low beams
The low beams are activated in switch posi-
tion 3 with the ignition switched on, otherwise
only the parking lamps are switched on.
Pathway lighting
When you activate the headlamp flasher after
parking the vehicle and switching off the lamps,
the low beams will come on for a brief period.
You can set the duration via iDrive or deactivate
the function.
iDrive, for principle details, refer to page16.
1.Press the button.
This opens the start menu.2.Press the controller to open the menu.
3.Select "Vehicle settings" and press the
controller.
4.Select "Lighting" and press the controller.
5.Select "Pathway lighting" and press the
controller.
6.Turn the controller to select the corre-
sponding duration.
7.Press the controller to apply the setting.
Daytime driving lamps*
If so desired, you can leave the light switch in
the low beam position3.
Switch on the parking lamps if required as
described under Parking lamps.
Automatic headlamp control*
In the switch position1, the system activates
and switches on and off the low beams in
response to changes in ambient light condi-
tions, for instance, in a tunnel, at dawn and dusk
and in case of precipitation. Adaptive Head
Light
* is active. The LED next to the symbol is
illuminated when the low beams are on.
When driving into a tunnel with bright overhead
lighting, switching on of the lights may be
delayed.
A blue sky with the sun low on the horizon can
cause the lights to be switched on.

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The low beams remain switched on inde-
pendent of the ambient lighting condi-
tions when you switch on the fog lamps
*.
With the daytime driving lamps
* activated, the
low beams are always switched on when the
ignition is switched on.<
The automatic headlamp control cannot
serve as a substitute for your personal
judgment in determining when the lamps
should be switched on in response to ambient
lighting conditions. For example, the sensors
cannot detect fog of hazy weather. To avoid
safety risks, you should always switch on the
lamps manually under these conditions.<
Adaptive Head Light*
The concept
Adaptive Head Light is a variable headlamp
control system that enables better illumination
of the road surface. Depending on the steering
angle and other parameters, the light from the
headlamp follows the course of the road.
Activating Adaptive Head Light
In the switch position1, the Adaptive Head
Light is active and the automatic headlamp con-
trol
* is switched on.
To avoid dazzling oncoming traffic, the Adap-
tive Head Light is not active when driving in
reverse and points toward the passenger side
when the vehicle is stopped.
Malfunction
The LED next to the symbol for automatic head-
lamp control flashes. Adaptive Head Light is
malfunctioning or has failed. Have the system
checked as soon as possible.
High beams/
roadside parking lamps
1High beams
2Headlamp flasher
3Roadside parking lamps
Roadside parking lamps, left or right*
You also enjoy the option of lighting up just one
side of your vehicle when parking. When using
this function, comply with national regulations:
After parking the vehicle, press the lever in the
desired direction3, past the resistance point.
The roadside parking lamps drain the bat-
tery. Do not switch them on for long peri-
ods of time, otherwise it may no longer be pos-
sible to start the engine.<
High-beam assistant*
The concept
This system automatically switches the high
beams on and off again. A sensor on the front of
the inside rearview mirror controls the process.
The assistant ensures that the high beams are
switched on whenever the traffic situation
allows. This reduces the strain on you while at
the same time providing you with the best pos-
sible visibility. Of course, you can intervene at
any time and switch the high beams on and off
in the accustomed manner.

Climate
100 4.Select the field by moving the controller and
turning the controller to adjust the temper-
ature.
Defrosting windows and removing
condensation
Quickly remove ice and condensa-
tion from the windshield and front
side windows.
Rear window defroster
The rear window defroster
switches off automatically after a
while.
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.
Manual air distribution
You can specify the air distribution.
1.Open the start menu.
2.Open "Climate".
3.Select "Vent settings" and press the con-
troller.
The driver's and front passenger side can
be adjusted separately with the fields on the
right or left side.
4.Select the driver's or front passenger side
if necessary.
Move the controller to the right or left
repeatedly until the driver's or front passen-
ger side is selected.
5.Select the desired field by moving the con-
troller.6.Turn the controller to adjust the air distribu-
tion.
Driver's side:
1Airflow directed toward the windshield and
side windows
2Airflow for the upper body
3Air to footwell
Front passenger side:
4Airflow for the upper body
5Air to footwell
Pressing the AUTO button cancels the air
distribution settings on the Control Dis-
play and vice versa.<
Switching the cooling function on
and off
The cooling function cools and
dehumidifies the incoming air
before also reheating it as
required, according to the temperature setting.
Depending on the weather, the windshield may
fog over briefly when the engine is started.
The cooling function is switched on automati-
cally with the AUTO program. The passenger
compartment can only be cooled with the
engine running.
Maximum cooling
Maximally cooled air is obtained as
quickly as possible from an outside
temperature above 327/06 and
with the engine running.
The automatic climate control changes over to
the lowest temperature and switches into the
recirculated-air mode. The maximum air quan-
tity only flows out of the vents for the upper

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body. Therefore, open these vents for maxi-
mum cooling.
AUC Automatic recirculated-air
control/recirculated-air mode
You can respond to pollutants or
unpleasant odors in the immediate
environment by suspending the
supply of outside air. The system then recircu-
lates the air currently within the vehicle. During
AUC operation, a sensor detects pollutants in
the outside air and controls the shut-off auto-
matically.
By pressing the button repeatedly, you can
request three operating modes:
>LED off: outside air flows in continuously.
>Right LED on, AUC mode: the system
detects pollutants in the outside air and
shuts off the supply as needed.
>Left LED on, recirculated-air mode: the
supply of outside air is permanently shut off.
If condensation starts to form on the
inside window surfaces during operation
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 an extended period of time, as the air qual-
ity inside the vehicle deteriorates continu-
ously.<
Residual heat
The heat stored in the engine is
used to heat the passenger com-
partment, e.g. while stopped at a
school to pick up a child.
The function can be switched on when the fol-
lowing conditions are met:
>up to 15 minutes after switching off the
engine
>with engine at operating temperature
>with sufficient battery voltage
>at an outside temperature below 777/
256The LED lights up when the function is
switched on.
From radio readiness the interior temperature,
the air volume and the air distribution can be
set.
Switching off automatic climate control
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.
Front ventilation
1Knurled wheels to smoothly open and close
air vents
2Levers to change the air vent direction
Do not drop any foreign objects into the
vent outlets, 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.