2006 BMW 745Li sensor

Driving
72
Resuming stored desired speed and
distance
Press button4:
The displays appear in the speedometer.
When you switch off the ignition, the stored
desired speed is deleted.
Info Display screen contents
1Stored desired speed display
2Lights up: vehicle detected ahead
3Selected distance to vehicle driving ahead
4The selected desired speed is displayed for
a short time, refer to page70
If the display ACC --- mph/ACC --- km/h
appears briefly in the speedometer, then
conditions required for operation may not cur-
rently be fulfilled. Retrieving Check Control
messages, refer to page81.<
Warning lamps
The display flashes and a chime
sounds.
The system asks you to intervene
by braking or with an evasive
maneuver. The active cruise control cannot
automatically restore the distance to the vehicle
driving ahead.
The display does not relieve you of the respon-
sibility for adapting desired speed and driving
style to traffic conditions.
Automatic intervention by ABS or
DSC. The active cruise control
intervenes by braking until you
actively intervene.
Radar sensor
Heavy rain and also dirt, snow, or ice can limit
the detection of vehicles ahead. If needed,
clean the radar sensor under the front bumper.
When doing so, be particularly careful in remov-
ing layers of snow and ice.
If the sensor is not aligned properly, the active
cruise control cannot be activated.

Technology for comfort, convenience and safety
86
Technology for comfort, convenience and
safety
PDC Park Distance Control*
The concept
The PDC assists you when you are parking.
Audible signals and an optical display indicate
that you are approaching an object in front of or
behind your vehicle. To measure the distance,
four ultrasonic sensors are provided in each
bumper. The range of these sensors is approx.
6 ft/2 m. However, an acoustic warning begins
to sound for the sensors at the front and at the
two rear corners 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; oth-
erwise, the system may sound the warning of
physical obstacles too late.<
Automatically activating
The system starts to operate automatically
approx. 1 second after you engage the trans-
mission position R with the engine running or
the ignition switched on.
Wait this short period before driving.
Manual activation
Press the 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 switches
off and the LED goes out. You can reactivate the
system manually as needed.
Signal tones
An intermittent signal indicates the distance of
the vehicle from an object being approached.
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.
The signal tone becomes continuous once the
distance to the nearest object falls below
roughly 1 ft/30 cm.
An intermittent tone is interrupted after approx.
3seconds:
>if you remain in front of 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 Info Display. PDC has failed.
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.
When using high-pressure washers, do not
spray sensors for long periods and keep the
sprayer at least 4 in/10 cm away from the sen-
sors.
PDC with visual warning
You can also have the system show distances
to objects on the Control Display. Objects that
are farther away are displayed there before a
signal tone begins to sound.

Controls
87Reference
At a glance
Driving tips
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Mobility
iDrive, for principle details, refer to page16.
1.Press the button to open the start
menu.
2.Move the controller toward "Settings".
3.Select "Vehicle" and press the controller.
4.Select "PDC pic." and press the controller.
This activates the PDC display.
The display appears as soon as PDC is acti-
vated.
The setting is stored for the remote control cur-
rently in use.
To exit the menu:
Select the arrow and press the controller.
System limits
Even with PDC, final responsibility for
estimating the distance between the
vehicle and any objects always remains with the
driver. Even when sensors are involved, there is
a blind spot in which objects cannot be
detected. The system's detection of objects is
also subject to the physical limits that apply to
all forms of ultrasonic measurement, such as
those encountered with tow bars and trailer
couplings, as well as thin and wedge-shaped
objects, etc. It is also possible that low objects
already displayed, such as curb edges, may come into the blind spot of the sensors before a
continuous signal sounds or that the system will
fail to detect higher, projecting obstacles such
as ledges. Loud noises from outside and inside
the vehicle may also prevent you from hearing
the PDC's 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 the wheels from locking during
braking. Safe steering response is maintained
even during hard braking. This increases active
driving safety.
ABS is operational every time you start the
engine. For information on safe braking, refer to
page123.
CBC Cornering Brake Control
This system provides further enhancements to
vehicle stability and steering response when
braking while cornering or when braking during
a lane change.
Electronic brake-force distribution
The system controls the brake pressure in the
rear wheels to ensure a 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 full braking.
DSC Dynamic Stability Control
DSC prevents traction loss in the driving wheels
when starting off and accelerating. DSC also

Controls
99Reference
At a glance
Driving tips
Communications
Navigation
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Mobility
Lamps
Parking lamps/low beams
1Parking lamps
2Low beams and daytime running lamps
*
3Automatic headlamp control, daytime run-
ning lamps
*, Adaptive Head Light*, and
High-beam assistant
*
Parking lamps
In switch position1, 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
page100.
The parking lamps drain the battery. Do
not leave them switched on for long peri-
ods of time; otherwise, it may no longer be pos-
sible to start the engine.<
Low beams
The low beams light up in switch position2 only
with the engine running. Otherwise, the parking
lamps are lit.
Automatic headlamp control
In the switch position3, the system activates
the low beams and switches them on or off in
response to changes in ambient light condi-
tions, for example in a tunnel, at dawn and dusk,
and in case of precipitation. 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.
The low beams remain switched on
regardless of the ambient light when you
switch on the front fog lamps.
When daytime running lamps are activated, the
low beams are always switched into switch
position3 whenever the ignition is switched
on.<
If so desired, the light switch can be left in the
position3. The exterior lighting is automatically
switched off after switching off the vehicle.
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.<
Pathway lighting
After parking the vehicle and switching off the
headlamps, you can use the headlamp flasher
control to activate the low beams for a period of
roughly 40 seconds.
Pressing the button on the remote control,
refer to page33, also switches on the low
beams for approx. 40 seconds. In addition, the
door handle and interior lamps are switched on
for approx. 10 seconds.
Daytime running lamps*
If so desired, the light switch can remain in
position2 or 3.
The exterior lighting is automatically switched
off after switching off the vehicle.
Switch on the parking lamps if required as
described under Parking lamps.

Lamps
100
Adaptive Head Light*
The concept
Adaptive Head Light is a variable headlamp
control system that enables dynamic illumina-
tion 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 switch position3, the Adaptive Head Light is
activated and Automatic headlamp control is
switched on.
In order not to blind oncoming traffic, the Adap-
tive Head Light is not active when driving in
reverse and only points toward the passenger
side when the vehicle is stationary.
Malfunction
The LED above 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 and right*
You also enjoy the option of lighting up just one
side of your vehicle when parking: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 leave them switched on for
long periods of time; otherwise, it may no longer
be possible 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 this 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.
Activating high-beam assistant
1.Turn the light switch to switch position3,
refer to page99.
2.Press the turn signal lever in the high beam
direction with the low beams switched on.
The indicator lamp in the instrument
cluster lights up when the high-beam
assistant is activated. The assistant
automatically switches between high and low
beams, whereby the system reacts to oncom-
ing traffic and traffic ahead, as well as to suffi-
cient lighting, e.g. towns/cities.

Controls
101Reference
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Mobility
Manually switching between high and
low beams
You can intervene at any time you wish or the
situation requires.
>If the high-beam assistant has switched on
the high beams, but you want to use the low
beams, simply switch to the low beams with
the turn signal lever. The high-beam assis-
tant is deactivated in the process.
To reactivate the system, briefly press the
turn signal lever in the high beam direction
again.
>If the high-beam assistant has switched on
the low beams, but you want to use the high
beams, switch to the high beams in the
accustomed manner. The system is deacti-
vated in the process and you must switch to
the low beams manually.
To reactivate the system, briefly press the
turn signal lever in the high beam direction
again.
>You use the headlamp flasher as usual with
low beams.
System limits
The high-beam assistant cannot replace
personal decisions on the benefits of
using the high beams. In situations which
require this, you should therefore switch to the
low beams manually to avoid a safety risk.<
In the following example situations, the system
either does not operate or only operates to a
limited degree and a personal reaction may be
required:
>Under extremely unfavorable weather con-
ditions, such as heavy fog or precipitation.
>For perceiving road users with poor lighting
of their own, e.g. pedestrians, cyclists, peo-
ple on horseback, horse-drawn vehicles,
with train or ship traffic close to the road and
wild animals crossing the road.
>In tight curves, on steep crowns or depres-
sions, with cross traffic or partially con-
cealed oncoming traffic on the freeway.
>In poorly lit places and with highly reflective
signs.>In the low speed range.
>When the windshield is dirty or covered with
stickers, decals etc. in the area of the inside
rearview mirror.
>When the sensor is dirty. Clean the sensor
on the front side of the inside rearview mir-
ror with a cloth moistened with a small
amount of glass cleaner.
Fog lamps
Briefly press the button to switch on/off.
Front fog lamps
The parking lamps or low beams must be
switched on for the fog lamps to operate. The
green indicator lamp on the Info Display lights
up whenever the fog lamps are on.
If the automatic headlamp control is acti-
vated, the low beams will come on auto-
matically when you switch on the fog lamps.<
Instrument lighting
You can adjust the lighting intensity with the
knurled wheel.

Climate
104
Automatic climate control
1AUTO program, left side of passenger
compartment, refer to section below
2Outside air/AUC Automatic recirculated-air
control/recirculated air105
3Switching off automatic climate
control105
4Temperature, left side of passenger
compartment105
5Maximum cooling106
6Air volume, left side of passenger
compartment106
7Defrosting windows and removing
condensation106
8Air volume, right side of passenger
compartment106
9Temperature, right side of passenger
compartment10510Residual heat mode106
11Rear window defroster107
12Switching cooling function on and off
manually107
13AUTO program, right side of passenger
compartment, refer to section below
14Air grille for interior temperature sensor –
please keep clear and unobstructed
15Parked car ventilation109
> lights up: activation time activated
> flashes: parked car ventilation
switched on
The current setting for air distribution is dis-
played on the Control Display, refer to
page106.
A congenial climate
For almost all conditions, the AUTO program1
offers the optimal air distribution and air vol-
ume. Select an interior temperature you find
pleasant.
The following section contains more detailed
information on the available setting options.
The settings are stored for the remote key cur-
rently in use.
AUTO program
The AUTO program handles the
adjustment of air distribution to the
windshield and side windows, in
the direction of the upper body, and in the foot-
well, as well as the adjustment of the air volume. It also adapts your instructions for the tempera-
ture to outside influences throughout the year.
The cooling is switched on automatically with
the AUTO program. At the same time, a con-
densation sensor controls the program so as to
prevent window condensation as much as pos-
sible.
Intensity of AUTO program
You can adjust the intensity of the AUTO pro-
gram by repeatedly pressing the AUTO button.
If you briefly press the button, the current set-
ting is displayed in the lower status line of the
Control Display.

Controls
105Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
You can also adjust the intensity of the AUTO
program via iDrive.
iDrive, for principle details, refer to page16.
1.Press the button to open the start
menu.
2.Move the controller toward "Climate".
3.Turn the controller to select driver's side or
passenger side.
4.Turn the controller to select the field.
5.Press the controller repeatedly until the
desired program is displayed:
>"low"
>"medium"
>"high"
Automatic recirculated air control/
recirculated air mode
You can respond to unpleasant
odors or pollutants in the immedi-
ate environment by temporarily
suspending the supply of outside air. The sys-
tem then recirculates the air currently within the
vehicle. In AUC mode, a sensor detects pollut-
ants in the outside air and controls the shut-off
automatically.
Press the button repeatedly to run through the
following control sequence:
>LEDs off: outside air flows into the vehicle
continuously.
>Left LED on, AUC mode: the system
detects pollutants in the outside air and
responds by blocking the supply of outside
air when required.
>Right LED on, recirculated-air mode: the
supply of outside air into the vehicle is con-
tinuously blocked.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 air supply as
required. Make sure that air can flow to the
windshield, e.g. by pressing the AUTO button.
The recirculated-air mode should not be used
over a longer period of time, as the air quality
inside the vehicle deteriorates continuously.<
Switching off automatic climate control
The air volume, the heater, and the
air conditioner mode are all
switched off.
You can restart the automatic climate control by
pressing any of its buttons except the REST
button.
Temperature adjustment
You can turn to select the desired
temperatures for the driver's and
passenger sides. Your settings
appear on the status line of the
Control Display. The number
shown in the display provides a general indica-
tion of interior temperature.
The automatic climate control adjusts this tem-
perature as quickly as possible at any time of
year, if necessary with the maximum cooling or
heating capacity, and then keeps it constant.
When switching between different tem-
perature settings in rapid succession, the
automatic climate control does not have suffi-
cient time to achieve the set temperature.<
Using iDrive
1.Open the start menu.
2.Open "Climate".
3.Turn the controller to select driver's side or
passenger side.
4.Turn the controller to select the field and
press the controller.