2008 BMW 550I TOURING brake sensor

Controls
73Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Selecting distance
>Briefly press rocker switch downward:
Increase distance.
>Briefly press rocker switch upward:
Reduce distance.
The selected distance is displayed in the instru-
ment cluster.
Use good judgment to select the appro-
priate following distance, given road con-
ditions, traffic, applicable laws and State driving
recommendations for safe following distance.
Otherwise, a violation of the law or risk of an
accident could result.<
Interrupting cruise control
Press the lever upward or downward, and with
the vehicle stopped also depress the brake
pedal. The marking in the speedometer
changes color and the distance indicator goes
out.
In addition, the system is automatically inter-
rupted:
>when you apply the vehicle brakes
>when you shift the transmission
>when DTC is activated or DSC is deacti-
vated
>when DSC comes on
>when you apply the handbrake
>when you release the safety belt and open
the driver's door with the vehicle stopped
>when the system does not recognize any
objects for an extended period of time, e. g.
on infrequently traveled roads without a
shoulder or guard rails, or if the radar sensor
is covered with dirt, refer to page75
If the system is interrupted, then it is nec-
essary for the driver to actively intervene
by braking and steering. Otherwise, there is a
risk of an accident.<
Resuming stored desired speed and
distance
While driving
Press button4.
The displays appear in the instrument cluster. Distance 1, closest
Distance 2
Distance 3
Distance 4, farthest
This distance is set when you acti-
vate the system.

Controls
75Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Radar sensors
1Long-range sensor
2Location of the short-range sensors behind
the bumper
3Location of the short-range sensors behind
the bumper with the M sports package
*
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
as well as the bumper area covering the short
range sensors. When doing so, be particularly
careful in removing layers of snow and ice.
Do not apply adhesive labels etc. in the area of
the short-range sensors.
If the sensor is not aligned properly, e. g. due to
damage, the active cruise control cannot be
activated.
System limitations
As with conventional cruise control sys-
tems, active cruise control in no way
diminishes or substitutes for the driver's own
personal responsibility, alertness and aware-
ness in adjusting speed, braking or otherwise
controlling the vehicle. The driver should
decide when to use the system on the basis of
road, traffic, visibility, and weather conditions.
Active cruise control is intended for use on
highway-type roadways where traffic is moving
relatively smoothly. Do not use this system in
city driving; in complex driving situations; on
curvy, winding roads, slippery roads or roads
with sharp curves such as highway off-ramps;
during inclement weather such as snow, strong
rain or fog; or when entering interchanges, ser-
vice/parking areas or toll booths. It is also
important to regulate your vehicle's speed and
distance setting within applicable legal limits.
Always be ready to take action or apply the brakes if necessary, especially when the sys-
tem is actively following a vehicle in front of
you.<
Always remember that the range and abil-
ity of the system do have physical limita-
tions. For example, the system may not detect
vehicles driving ahead if they suddenly brake
heavily in stop-and-go traffic during accelera-
tion. The system will not apply the brakes or
slow your vehicle when a very slow-moving
vehicle, stopped vehicle or stationary object is
in the lane ahead of you, for example when
approaching a traffic light or parked vehicle or
when a vehicle is stalled in your lane. Also, the
system does not react to oncoming traffic,
pedestrians or other types of potential traffic
such as a rider on a horseback. It is also possible
that the system may not detect smaller moving
objects such as motorcycles or bicycles. Be
especially alert when encountering any of these

Technology for comfort, convenience and safety
90 1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Turn the controller until "Settings" is
selected and press the controller.
4.Turn the controller until "Vehicle / Tires" is
selected and press the controller.
5.Change to upper field if necessary. Turn the
controller until "PDC" is selected and press
the controller.
6.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.
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. The system is also sub-
ject to the physical limits that apply to all forms
of ultrasonic measurement, such as those
encountered with tow bars and trailer cou-
plings, or thin and wedge-shaped objects etc. Low objects already displayed, e. g. curbs, can
also disappear from the detection area of the
sensors again before or after a continuous tone
already sounds. Higher, protruding objects, e.g.
ledges, cannot be detected. For this reason,
drive with care; otherwise, there is a danger of
personal injury or property damage.
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 page136.
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.
Brake assistant
When you apply the brakes rapidly, this system
produces maximum braking force boosting and
thus helps to achieve the shortest possible
braking distance during full braking maneuvers.
This system exploits all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the full braking.

Mobility
237Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Maintenance
BMW maintenance system
The BMW maintenance system supports the
preservation of the traffic and operating safety
of your BMW. The ultimate objective is to
ensure economical maintenance by providing
the ideal service for your vehicle.
Should the day come when you decide to sell
your BMW, a complete dealer service history
will prove to be an asset of inestimable value.
CBS Condition Based Service
Sensors and special algorithms take the differ-
ent driving conditions of your BMW into
account. Condition Based Service uses this to
determine the current and future service
requirements. By letting you define a service
and maintenance regimen that reflects your
own individual requirements, the system builds
the basis for trouble-free driving.
You can set the Control Display to show
remaining distances and times of selected
maintenance intervals and legally mandated
deadlines, refer to page81:
>Engine oil
>Brake pads, front and rear separately
>Brake fluid
>Vehicle check
>Legally mandated inspections depending
on local regulations
Service data in remote control
Your vehicle stores the information required
maintenance continuously in the remote con-
trol during driving. After accessing the data
stored in the remote control, your BMW Service
Advisor can suggest precisely the right array of
service procedures for your own individual vehi-
cle. You should therefore hand over the remote
control you last used to drive to the BMW Ser-
vice Advisor when you take your vehicle in for
service.
Make sure the date is set correctly, refer
to page87, otherwise the effectiveness
of CBS Condition Based Service is not
ensured.<
Service and Warranty Information
Booklet for US models and
Warranty and Service Guide Booklet
for Canadian models
Please consult your Service and Warranty Infor-
mation Booklet for US models and Warranty
and Service Guide Booklet for Canadian models
for additional information on service require-
ments.
BMW recommends that you have service
and repair operations performed at your
BMW center.
Take the time to ensure that these service pro-
cedures are confirmed by entries in your vehi-
cle's Service and Warranty Information Booklet
for US models and Warranty and Service Guide
Booklet for Canadian models. These entries
verify that your vehicle has received the speci-
fied regular maintenance.<

Mobility
239Reference
At a glance
Controls
Driving tips
Communications
Navigation
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Care
Car-care products
Regular cleaning and care make a significant
contribution to retaining your BMW's value.
For the cleaning and care of your vehicle, BMW
recommends using only products that BMW
has approved for this purpose.
Your BMW Service will be glad to advise you
about products and services for the cleaning
and care of your BMW.
Original BMW Care Products are materi-
als tested, laboratory tested, and tested in
actual use. They offer optimum care and pro-
tection for your vehicle.<
Do not use cleaners that contain alcohol
or solvents; they can damage your vehi-
cle.<
Cleaning agents can contain substances
that are dangerous or pose health risks.
You should therefore heed the warnings and
hazard indications on the packaging. Open the
doors or windows on your vehicle whenever
cleaning the interior. Make sure there is suffi-
cient ventilation in enclosed spaces. Use only
products that are formulated for vehicle clean-
ing.<
Care exterior
Washing your vehicle
In the winter months, it is especially
important to ensure that the vehicle is
washed on a regular basis. Otherwise, signifi-
cant soiling and road salt can cause damage to
the vehicle.<
Failure to do so may lead to a reduction in
braking efficiency and also to corrosion of
the brake rotors.<
Car washes
Give preference to cloth car washes.
Before driving into the car wash, make sure that
it is suitable for your BMW. Pay attention to the
following points:
>Dimensions of your vehicle, refer to
page261.
>If necessary, fold in the outside rearview
mirrors, refer to page53.
>Maximum permissible tire width.
Preparations for driving into the car wash:
>Deactivate rain sensor to prevent unwanted
wiper activation.
>Deactivate rear window wiper
* and protect
it from damage. Take appropriate protec-
tive measures; inquiring with the car wash
operator as needed.
>Remove additional add-on parts, e.g. spoil-
ers or phone antennas, if they could be
damaged.
Automatic transmission
Before driving into the car wash, make sure the
vehicle is able to roll by making sure to:
1.Insert the remote control into the ignition
lock, even with comfort access.
2.Shift into transmission position N.
3.Release the parking brake.
4.Switch off the engine.
5.Leave the remote control in the ignition lock
so that the vehicle can roll.
Steam cleaners/high-pressure
cleaning jets
When using steam cleaners or high-pres-
sure cleaning jets, make sure to maintain
a sufficient distance and stay below a maximum
temperature of 1407/60°C.
Insufficient distance or excessive pressure or
temperature can damage parts of the vehicle or
can result in water penetration. Follow the oper-

Care
240 ating instructions for the high-pressure clean-
ing jets.<
When using high-pressure cleaning jets,
do not remain in one place for a long time
and be sure to maintain a distance of at least
12 in/30 cm from sensors, e.g. Park Distance
Control sensors or radar sensors.<
Hand washing
When washing the vehicle by hand, use plenty
of water and car washing shampoo. Clean the
vehicle with gentle pressure using a sponge or a
washing brush.
Before cleaning the windshield, deacti-
vate the rain sensor or switch off the igni-
tion to prevent unwanted wiper operation.<
Follow local guidelines for washing vehi-
cles by hand.<
Headlamps
Do not rub dry and never use abrasives or
strong solvents to clean the covers.
Loosen dirt, e.g. insects, with shampoo or
insect remover and wash away with plenty of
water.
Use a window de-icer to remove accumulated
ice and snow, not a scraper.
Windows
Use a glass cleaner to clean the inside and out-
side surfaces of the windows and the glass sur-
faces of the mirrors.
Do not use quartz-containing cleansers
to clean glass surfaces of the mirrors.<
Wiper blades
Clean with soapy water and replace regularly to
prevent streaking.
The presence of wax and sealant residues
and dirt on the windows leads to streaking
during wiper operation and results in premature
wear on wiper blades as well as interference
with the rain sensor.<
Caring for the vehicle finish
Regular care helps your vehicle retain its value
and protects the paint from the long-term
effects of aggressive substances.
Regionally occurring environmental factors can
affect and damage vehicle finish. It is therefore
important to tailor the frequency and extent of
your car care accordingly.
Immediately remove particularly aggressive
substances such as spilled fuel, oil, grease,
brake fluid, tree resin, or bird droppings; other-
wise, they may damage your paint.
Repairing paint damage
Repair stone damage or scratches imme-
diately, depending on the severity of the
damage, to prevent the formation of rust.<
BMW recommends having paint damage pro-
fessionally repaired using Genuine BMW finish
materials in accordance with factory guidelines.
Waxing
Sealant is required when water no longer beads
on the clean surface of the paint. Use only prod-
ucts that contain carnauba wax or synthetic wax
to seal your finish.
Rubber gaskets
Treat only with water or a rubber care product.
To avoid noise or damage, do not use
products that contain silicone to care for
rubber gaskets.<
Chrome components
Particularly after exposure to road salt, thor-
oughly cleanse parts like the radiator grille, door
handles, or window frames with plenty of water
with shampoo added to it. For additional treat-
ment, use chrome polish.
Alloy wheels
Depending on your system, braking can gener-
ate dust, which settles on the light-alloy wheels.
Remove this dust regularly with acid-free wheel
cleaner.

Everything from A to Z
270
Everything from A to Z
Index
"..." Identifies Control Display
texts used to select
individual functions, and
indicates where to find them
in the text.
A
ABS Antilock Brake
System90
– indicator lamp93
ACC, refer to Active cruise
control71
Accepted calls202
Accessories6
Accident, refer to Emergency
request253
Acoustic signal, refer to Check
Control83
Activated-charcoal filter for
automatic climate
control117
"Activation time" for parked
car ventilation118
Active cruise control71
– indicator lamp74
– radar sensors75
– selecting distance73
– warning lamps74
Active front head restraints49
Active seat52
Active seat ventilation52
Active steering98
– warning lamp99
Adapter for spare key28
Adaptive brake assistant91
Adaptive brake lamps, refer to
Brake force display99
Adaptive Head Light109
"Add digits" in mobile phone
mode202Additives
– coolant235
– engine oil, refer to Approved
engine oils235
"Address book" in
navigation151
Address for navigation
– deleting153
– entering144,147
– selecting152
– storing151
– storing current position152
"Add to address book"151
"Add to destination
list"147,148
Adjusting active backrest
width47
Adjusting interior
temperature114
Adjusting the tone during
audio operation, refer to
Tone control169
Adjusting thigh support46
"After door opened"48
"After unlocking"48
Airbags99
– indicator/warning lamp101
– indicator lamp for front
passenger airbags100
– sitting safely45
Air distribution
– automatic114
– manual115
Airing, refer to Ventilation117
Air recirculation
– AUC Automatic
recirculated-air control116
– recirculated-air mode116
"Air recirculation on / off"55
Air supply, automatic climate
control113
Air volume115AKI, refer to Fuel quality221
Alarm system37
– avoiding unintentional
alarms38
– interior motion sensor38
– switching off alarm37
– switching off tilt alarm
sensor and interior motion
sensor38
– tilt alarm sensor38
"All channels"179
"All doors"30
Alloy wheels240
All-season tires, refer to
Winter tires230
"All stations" requesting in
radio mode172
All-wheel drive, refer to
xDrive92
Alterations, technical, refer to
For your own safety5
Altering stretch of road160
"AM", reception
range168,172
Antenna for mobile phone194
Antifreeze
– coolant235
– washer fluid69
Antilock Brake System
ABS90
Anti-theft alarm system, refer
to Alarm system37
Anti-theft system, refer to
Central locking system29
Approved axle loads, refer to
Weights263
Approved engine oils235
Approved gross vehicle
weight, refer to Weights263
Armrest, refer to Center
armrest, rear126
Around the center console14

Everything from A to Z
272 BMW Assist209
– activating215
– BMW TeleServices211
– concierge service212
– contacting BMW Customer
Relations212
– displaying vehicle data216
– offered services209
– roadside assistance210
– updating214
BMW Assist My Info213
BMW Car Shampoo241
"BMW Contact"204
"BMW Contact
Numbers"204
BMW homepage4
BMW maintenance
system237
BMW Night Vision103
– activating104
– cleaning camera105
– cleaning camera, refer to
Wiper system68
– deactivating104
– making settings104
"BMW Service settings"214
BMW TeleServices211
BMW TeleServices services
– displaying212
– updating212
BMW website4
Bottle holder, refer to Cup
holders124
Bracket for telephone or
mobile phone, refer to Snap-
in adapter207
Brake assistant90
– adaptive91
Brake force display99
Brake lamps
– replacing bulbs246
– two-stage99
Brake rotors
– breaking-in134
– refer to Braking safely136Brakes
– ABS Antilock Brake
System90
– brake assistant90
– brake force display99
– breaking-in134
– CBC Cornering Brake
Control90
– electronic brake-force
distribution90
– handbrake63
– refer to Braking safely136
– warning lamps
13
Brake system134
– brake pads134
– breaking-in134
– disk brakes136
– warning lamp93
Braking safely136
Breakdown services, refer to
Roadside Assistance254
Breaking-in brake pads134
Breaking-in the clutch134
Breaking-in the differential,
refer to Engine and
differential134
Break-in period134
"Brightness"88,102
– with BMW Night Vision105
Brightness of Control
Display87
Button for starting engine,
refer to Start/Stop button61
Buttons on steering wheel11
C
California Proposition 65
Warning6
"Call"202,213
Call
– accepting200
– displaying accepted203
– ending201
– in absence203
– rejecting201
– starting201Calling
– by entering phone
number201
– from phone book202
– from Top 8 list203
– redialing203
– refer to telephone operating
instructions
Can holder, refer to Cup
holders124
Capacities264
Car battery, refer to Vehicle
battery251
"Car Data"80
Care239
– car-care products239
– carpets241
– car washes239
– CD/DVD-player242
– chrome components240
– displays241
– exterior239
– fine wooden
components241
– hand washing240
– headlamps240
– high-pressure cleaning
jets239
– interior241
– leather241
– light-alloy wheels240
– paint240
– plastic components241
– rubber gaskets240
– safety belts241
– sensors and cameras241
– upholstery and cloth-
covered paneling241
– windows240
– wiper blades240
Cargo
– refer to Cargo loading137
– securing138
– securing with ski bag130