2006 BMW 525I tow

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
89Reference
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Mobility
may not have been initialized. The system
must then be initialized.<
3.In the event of complete tire pressure loss,
0 psi/0 kPa, you can estimate the possible
distance for continued driving on the basis
of the following guide values:
>With a light load:
1 to 2 persons without luggage:
approx. 155 miles/250 km
>With a medium load:
2 persons, luggage compartment or
cargo area full, or 4 persons without
luggage:
approx. 94 miles/150 km
>With a full load:
from 4 persons, luggage compartment
or cargo area full:
approx. 30 miles/50 km
Drive reservedly and do not exceed a
speed of 50 mph/80 km/h. In the event of
pressure loss, vehicle handling changes. This
includes reduced tracking stability in braking,
extended braking distance and altered natural
steering characteristics.
If unusual vibrations or loud noises occur while
the vehicle is being driven, this can indicate final
failure of the damaged tire. Reduce speed and
stop at a suitable location as soon as possible,
otherwise pieces of the tire could become
detached and cause an accident. Do not con-
tinue driving, but instead contact your BMW
center.<
Active steering*
The concept
The active steering is a system that actively var-
ies the steering angle of the front wheels in rela-
tion to the steering wheel movements.
When you are driving in the low road speed
range, e. g. in a town or when parking, the steer-
ing angle increases, i.e. the steering becomes
very direct. In the higher speed range, on the
other hand, the steering angle is reduced more
and more. This improves the handling capability
of your BMW over the entire speed range.In critical situations, the system can make tar-
geted corrections to the steering angle pro-
vided by the driver and thus stabilize the vehicle
before the driver intervenes. This stabilizing
intervention is simultaneously deactivated
when DSC is switched off, refer to page85.
Malfunction
The warning lamp lights up and a mes-
sage appears on the Control Display.
The active steering is no longer opera-
tional. At low speeds, greater steering wheel
movements are required, whereas at higher
speeds, the vehicle reacts more sensitively to
steering wheel movements. The stability-
promoting intervention can also be deactivated.
Proceed cautiously and drive defensively. Have
the system checked.
Brake force display
Left-hand picture: normal braking.
Right-hand picture: heavy braking.

Controls
95Reference
At a glance
Driving tips
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Mobility
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.

Lamps
96
Activating high-beam assistant
1.Turn the light switch to switch position1,
refer to page94.
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.
Manually switching between high and
low beams
You can intervene at any time if you wish or the
situation requires.
>If the high-beam assistant has switched on
the high beams, however you nevertheless
want to use the low beams, simply switch to
the low beams with the turn signal lever.
The high-beam assistant 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, however you nevertheless
want to use the high beams, switch to the
high beams in the accustomed manner. The
system is deactivated 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
does not operate or only with limitations and a
personal reaction may be required:
>Under extremely unfavorable weather con-
ditions, such as heavy fog or precipitation
>For perceiving road user 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 fogged up, dirty or
covered with stickers, vignettes 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

Climate
98
Climate
Automatic climate control
1Airflow directed toward the windshield and
side windows
2Air for the upper body region, refer to
Front ventilation on page101
3Air to footwell
4Temperature, left side of passenger
compartment
5Maximum cooling
6Defrosting windows and removing
condensation
7Air volume, manual
8Switching off automatic climate control9Switching cooling function on and off
manually
10Temperature, right side of passenger
compartment
11Residual heat mode
12AUTO program
13AUC Automatic recirculated-air control/
recirculated-air mode
14LED for parked car ventilation
*
15Rear window defroster
16Air grill for interior temperature sensor –
please keep clear and unobstructed

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

Climate
102
Rear ventilation
1Knurled wheel to smoothly open and close
air vents
2Knurled wheel to adjust the temperature:
>Turn toward blue: colder
>Turn toward red: warmer
3Levers to change the air vent direction
Microfilter/activated-charcoal filter
The microfilter removes dust and pollen from
the incoming air. The activated-charcoal filter
provides additional protection by filtering gas-
eous pollutants from the outside air. Your BMW
center replaces this combined filter as a stan-
dard part of your scheduled maintenance.
You can select a display of more detailed infor-
mation on the Control Display, refer to page75.
Parked car ventilation*
The concept
The parked car ventilation blows air into the
passenger compartment to lower interior tem-
peratures.
It is ready to use in the parked-car mode at any
outside temperature.
You can set two different times for the system
to start. The parked car ventilation can also be
switched on and off directly. It remains
switched on for 30 minutes.
Since the system uses a substantial amount of
electrical current, you should refrain from acti-
vating it twice in succession without allowing
the battery to be recharged in normal operation
between use.The air emerges through the upper body region
vent outlets in the instrument panel. These vent
outlets must be open for the system to operate.
The parked car ventilation is operated via iDrive.
Switching on and off directly
iDrive, for principle details, refer to page16.
1.Open the start menu.
2.Move the controller to the left to open
"Climate".
3.Select "Parked car operation" and press
the controller.
4.Select "Automatic ventilation" and press
the controller.
5.Select "Parked car ventilation" and press
the controller.
The parked car ventilation is switched on.
The symbol on the display of the automatic
climate control flashes.
Preselecting activation times
iDrive, for principle details, refer to page16.
1.Open the start menu.
2.Move the controller to the left to open
"Climate".
3.Select "Parked car operation" and press the
controller.
4.Select "Activation time" and press the con-
troller.

Controls
107Reference
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Driving tips
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Mobility
Ventilating lower compartment
Push the slide in the lower compartment
upward.
Depending on the automatic climate con-
trol setting, the temperature inside the
ventilated compartment may be higher than in
the rest of the interior. Should this be the case,
push the slide downward to close off the venti-
lation.<
Adjusting
Push the illustrated section of the center arm-
rest into the desired position.
Storage compartments
There are other storage compartments in the
doors as well as in the front and rear center con-
sole.
Storage nets are located on the backrests of the
front seats, and a net
* is provided in the front
passenger footwell.
Do not stow hard or sharp-edged objects
in the storage nets or the net, otherwise
there is an increased risk of injury in an acci-
dent.<
Clothes hooks
Clothes hooks are located near the grab han-
dles in the rear.
When hanging clothing on the hooks,
ensure that it will not obstruct the driver's
vision. Do not hang heavy objects on the hooks.
If you do so, they could cause personal injury to
occupants during braking or evasive maneu-
vers.<
Cup holders
Opening
Briefly press the button.
Do not place containers made of glass in
the cup holders. This would lead to an
increased risk of injury in the event of an acci-
dent.<
Closing
Press the cover in the center and push in the
cup holder.
Ashtray, front
Opening
Slide back the cover.
Emptying
Push the ashtray toward the front: the ashtray
lifts and can be removed.