2008 BMW 335I CONVERTIBLE brake sensor

Driving
70
Deactivating cruise control
Press the lever upward or downward, arrow3.
The displays on the speedometer disappear.
In addition, the system is automatically deacti-
vated:
>When you brake the vehicle
>When the speed is reduced to below
20 mph or 30 km/h due to a traffic situation
>When you switch gears very slowly or shift
to idle in cars with manual transmission
>When you select the automatic transmis-
sion's neutral position N
>When you activate the Dynamic Traction
Control DTC
>When you deactivate the Dynamic Stability
Control DSC
>When DSC or ABS is intervening
>When the system does not recognize any
objects for a longer period of time, e.g. on
infrequently traveled roads without a shoul-
der or guard rails, or if the radar sensor is
covered with dirt, refer to page71
>When you apply the parking brake
When the system is deactivated, you
must brake the vehicle yourself and/or
maneuver as necessary, otherwise there is a
risk of accident.<
Warning lamp
The warning lamp comes on when
active cruise control has been auto-
matically deactivated due to a driving
speed below 20 mph or 30 km/h, an application
of the parking brake or a DSC intervention. A
message appears on the Control Display.
Resuming stored desired speed and
distance
Briefly press the button, arrow 4.
The stored speed and distance are regained
and maintained.
In the following instances, the stored speed is
deleted and can no longer be resumed:
>When driving stability control systems are
intervening
>In cars with ma nua l trans mis sio n: when you
shift gears very slowly or shift to idle posi-
tion
>In cars with automatic transmission: when
you engage selector lever position N
>When the ignition is switched off
Displays in the instrument cluster
1Stored desired speed
2Shows yellow: vehicle detected ahead
Flashes in red: system cannot maintain dis-
tance; driver must brake the vehicle
Flashes in yellow: driving stability control
systems are intervening; cruise control is
deactivated
3Selected distance to vehicle ahead
The indicator lights up as soon as the sys-
tem is activated.
4Selected desired speed is temporarily dis-
played
If --- mph or --- km/h temporarily appears
in the instrument cluster display, it is pos-
sible that the system prerequisites for operation

Controls
71Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
are currently not met. Calling up Check Control
messages, refer to page84.<
Warning lamps
The indicator2 flashes in red; a
signal sounds.
The system indicates that you
must brake and/or maneuver the
vehicle yourself. Active cruise con-
trol cannot automatically restore the distance to
the vehicle ahead.
This indicator does not release you from your
responsibility to adapt your desired speed and
driving style to prevailing driving conditions.
The indicator 2 flashes in yellow.
The prerequisites for operating
active cruise control are not met,
e.g. as a result of ABS or DSC
interventions. Active cruise control
is deactivated. You can reactivate the system, if
desired, by tapping or pulling the lever when
road and traffic conditions permit. It is not pos-
sible to resume a stored speed.
Radar sensor
The sensor's ability to detect vehicles ahead
may be restricted as a result of heavy rain, dirt,
snow or ice. If necessary, clean the radar sensor
located in the front bumper, see arrow. Be sure
to use particular care when removing any layers
of snow or ice from the sensor.
When the radar sensor is not properly posi-
tioned, active cruise control cannot be activated
at all.
Malfunction
The warning lamp comes on when
the system has failed. A message
appears on the Control Display. You
can find more information starting on page83.
System limitations
Always remember that the range and abil-
ity of the system does have physical limi-
tations. It will not apply the brakes or decelerate
your vehicle when there is a slow-moving vehi-
cle, stopped vehicle or stationary object ahead
of you, as for example, at a traffic light or a
parked vehicle. Also, the system does not react
to oncoming traffic, pedestrians or other types
of potential traffic such as a rider on horseback.
It is also possible that the system may not detect smaller moving objects such as motor-
cycles or bicycles. Be especially alert when
encountering any of these situations as the sys-
tem will neither automatically brake, nor provide
a warning to you. Also, be aware that every
decrease in the distance setting allows your
vehicle to come closer to a vehicle in front of
you and requires a heightened amount of alert-
ness.<

Controls
89Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
until "PDC" is selected and press the con-
troller.
6.Select "PDC display on" and press the con-
troller.
The PDC screen is activated.
The display is shown on the Control Display as
soon as PDC is activated.
System limitations
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 trailer towbars and hitches,
thin or wedge-shaped objects, etc. Low objects
that have already been displayed, e. g. curbs,
can disappear again from the detection area of
the sensors before or after a continuous tone
sounds. Higher, protruding objects, e.g. ledges,
cannot be detected. Therefore, always drive
cautiously, otherwise there is a risk of personal
injury or property damage.
Loud sound sources outside or inside the car
can drown out the PDC signal.<
Driving stability control
systems
Your BMW has a number of systems that help
to maintain the vehicle's stability even in
adverse driving 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 page126.
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 for the
duration of the full braking application.
DSC Dynamic Stability Control
DSC prevents the driving wheels from losing
traction when you pull away from rest or accel-
erate. The system also recognizes unstable
driving conditions, for example if the rear of the
car is about to swerve or if momentum is acting
at an angle past the front wheels. In these
cases, DSC helps the vehicle maintain a safe
course within physical limits by reducing engine
output and through braking actions at the indi-
vidual wheels.
The laws of physics cannot be repealed,
even with DSC. An appropriate driving
style always remains the responsibility of the
driver. Therefore, do not reduce the additional
safety margin again by taking risks, as this could
result in an accident.<

Mobility
229Reference
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 objective is to optimize
efforts with respect to minimal vehicle mainte-
nance costs.
If and when you come to sell your BMW, a com-
prehensive record of servicing will prove a sig-
nificant benefit.
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.
On the Control Display, you can have the
remaining times or distances for selected main-
tenance tasks and any legally prescribed dates
displayed, refer to page79:
>Engine oil
>Brake pads: separately for front and rear
>Brake fluid
>Vehicle check
>Legally mandated inspections depending
on local regulations
Service data in the remote control
Your vehicle continuously stores service-
requirement information in the remote control
while you are driving. Your BMW Service Advi-
sor can read out this data from the remote con-
trol unit, and propose an optimized mainte-
nance approach. Whenever you take your car in
for servicing you should therefore hand your
BMW Service Advisor the remote control unit
that you last used.
Make sure that the date is always set cor-
rectly, refer to page82; otherwise the
effectiveness of Condition Based Service CBS
is not assured.<
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.<

Everything from A - Z
252
Everything from A - Z
Index
"..." Identifies Control Display
texts used to select
individual functions and
refers you to the page where
these texts can be found.
A
ABS Antilock Brake
System89
ACC, refer to Active cruise
control67
Accident, refer to Sending an
Emergency Request236
Activated-charcoal filter for
automatic climate
control108
"Activation time"109
Active cruise control67
– indicator lamps70
– malfunction71
– selecting distance69
– sensor71
Active steering96
– warning lamp96
Adaptive Head Light101
"Add digits" for mobile
phone194
Additives
– coolant227
"Address book" in
navigation142
Address for navigation
– deleting144
– entering134,142
– selecting143
– storing142
– storing current position143
"Add to destination
list"137,139
Adjusting temperature inside
the car, refer to Automatic
climate control105Adjusting the thigh support46
Adjusting the tone during
audio operation, refer to
Tone control161
Airbags97
– indicator/warning lamp98
– sitting safely45
Air conditioning mode
– automatic climate
control105
– ventilation107
Air distribution
– automatic106
– individual105
Air flow rate106
Airing, refer to Ventilation107
Air pressure, refer to Tire
inflation pressure212
Air recirculation, refer to
Recirculated-air mode106
"Air recirculation on / off"54
Air supply
– automatic climate
control105
– ventilation107
Air vents104
AKI, refer to Fuel
specifications211
Alarm system35
– avoiding unintentional
alarms36
– interior motion sensor36
– switching off an alarm35
– tilt alarm sensor36
"All channels" for satellite
radio171
All-season tires, refer to
Winter tires223
"All stations", displaying with
the radio164
All-wheel drive, refer to
xDrive90
"AM", waveband160,164Ambient air, refer to
Recirculated-air mode106
Antenna for mobile phone186
Antifreeze
– coolant227
– washer fluid65
Anti-theft alarm system, refer
to Alarm system35
Anti-theft system29
Approved axle loads, refer to
Weights247
Approved gross vehicle
weight, refer to Weights247
Armrest, refer to Center
armrest114
Arrival time, refer to
Computer76
Arrival time, refer to Starting
destination guidance147
Arrow display for
navigation148
"Arrow display" in
navigation148
Ashtray
– front116
– rear116
Assistance systems, refer to
Driving stability control
systems89
Assistance window20
– refer to iDrive20
AUC Automatic recirculated-
air control106
"Audio"163,167
Audio160
– controls160
– switching on/off160
– tone control161
– volume161
"Audio", refer to Tone
control161
Audio device, external114

Reference 259
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Heating
– mirrors53
– rear window107
– residual heat107
– seats49
Heating and ventilation, refer
to Climate104
Heating while at a standstill,
refer to Using residual
heat107
Heavy loads, refer to Stowing
cargo127
Height, refer to
Dimensions245
Height adjustment
– seats46
– steering wheel53
High beams102
– headlamp flasher102
– indicator lamp13
High Definition Radio167
High water, refer to Driving
through water126
Highways, refer to Route
criteria145
Hill Descent Control HDC90
Hills126
Holders for cups115
Home address144
"Home address" in
navigation145
Homepage BMW4
Hood224
Hooks for shopping bags118
Horn10,11
Hotel function, refer to
Locking or unlocking
separately34
Hot exhaust system125
"Hour memo"82
"House number" in
destination entry137
Hydraulic brake assist, refer to
Dynamic Brake Control
DBC89
Hydroplaning125I
IBOC, refer to High Definition
Radio167
Ice warning, refer to Outside
temperature
warning74
ID3 tag, refer to Information
about the track175
Identification marks
– Run-Flat Tires222
– tire coding220
iDrive16
– adjusting brightness86
– assistance window20
– automatic climate
control105
– changing language86
– changing units of measure
and display format78
– confirming selection or
entry19
– controls16
– displays, menus17
– menu guidance17
– operating principle16
– overview16
– selecting a menu item19
– setting the date and time81
– start menu17
– status information20
– switching menu pages19
– symbols18
iDrive operating principle16
Ignition59
– switched off59
– switched on59
Ignition key, refer to Remote
control with integrated
key28
Ignition key position 1, refer to
Radio readiness59
Ignition key position 2, refer to
Ignition on59
Ignition lock59
i menu18
Imprint2Indicator and warning
lamps13
– Tire Pressure Monitor
TPM95
Individual air distribution105
Inflation pressure, refer to Tire
inflation pressure212
Inflation pressure monitoring,
refer to Tire Pressure
Monitor TPM93
Information
– on another location140
– on country140
– on current position140
– on destination location140
Information menu, refer to
i menu18
"Information on
destination"142
"Info sources"80
Initializing
– active steering96
– after power failure235
– compass, refer to
Calibrating112
– Flat Tire Monitor FTM92
– glass roof40
"Input map"139
Installation location
– CD changer177
– navigation DVD drive132
– telephone114
Instructions for navigation
system, refer to Voice
instructions150
Instrument cluster12
Instrument lighting103
Instrument panel, refer to
Cockpit10
Integrated key28
Integrated universal remote
control110
Interesting destination for
navigation140
"Interim time"86
Interior lamps103
– remote control31
Interior motion sensor36

Everything from A - Z
266 Summer tires, refer to Wheels
and tires212
Surface ice, refer to Outside
temperature warning74
"Surround Settings", refer to
Tone control162
Switches, refer to Cockpit10
Switching off
– engine60
Switching off the engine
– start/stop button59
Switching on
– audio160
– CD changer160
– CD player160
– radio160
Switching on the hour
signal82
Switching the cooling function
on and off107
Switch-on times of parked car
ventilation, preselecting108
Symbols4
– navigation system154
– status information20
– traffic info for navigation
system151
T
Tachometer74
Tail lamps233
– replacing bulb233
Tank contents, refer to
Capacities247
Technical data244
– capacities247
– dimensions245
Technical modifications, refer
to For your own safety5
Telematics, refer to
TeleService, BMW
Assist201
Telephone
– installation location, refer to
Center armrest114
– refer to separate Owner's
ManualTelephone, refer to Mobile
phone186
"Telephone list"54
TeleService203
Temperature
– automatic climate
control105
– changing unit of measure78
– coolant, refer to Coolant
temperature75
Temperature display
– outside temperature74
– outside temperature
warning74
– setting the units78
Tempomat, refer to Cruise
control66
Tensioning straps, refer to
Securing cargo128
"Terminate services"206
"Text language"86
"Theater" for Tone
control162
The individual vehicle5
Third brake lamp, refer to
Center brake lamp234
Through-loading opening with
integrated transport
bag120
Through-loading system117
Tilt alarm sensor36
Tilt function, passenger-side
mirror53
"Time"82
"Time / Date"82,83
"Time format"82
Timer, refer to Preselecting
switch-on times108
"Timer 2" for parked car
ventilation/heating109
"Timer 1" for parked car
ventilation/heating109
Tire inflation pressure212
– loss93,94
Tire pressure monitoring,
refer to Flat Tire Monitor92Tire Pressure Monitor
TPM93
– resetting the system94
– system limitations93
– warning lamp95
Tire puncture, refer to Flat Tire
Monitor93
Tire Quality Grading220
Tires
– age220,221
– air loss95
– breaking in124
– changing, refer to Changing
wheels234
– condition221
– damage221
– inflation pressure212
– labels220
– minimum tread depth221
– new wheels and tires222
– pressure monitoring, refer to
Flat Tire Monitor92
– pressure monitoring, refer to
Tire Pressure Monitor
TPM93
– puncture93
– replacing222
– Run-Flat222
– size220
– storage223
– tread depth221
– wear indicators, refer to
Minimum tread depth221
– wheel/tire combination, refer
to Correct wheels and
tires222
– winter tires223
TMC station, refer to Traffic
information151
"Tone"161
Tone in audio mode
– adjusting161
– middle setting163
Tools, refer to Onboard tool
kit231
Top, refer to Retractable
hardtop41
"Top 8" for mobile phone194