2005 BMW 325XI brake sensor

Reference
At a glance
Controls
Driving tips
Mobility
55
Selecting distance
>Press downward:
Increase distance
>Press upward:
Decrease distance.
The selected distance is displayed in the instru-
ment cluster.
Use good judgement to select the appro-
priate following distance given road con-
ditions, traffic, applicable laws and driving rec-
ommendations for safe following distance.
Otherwise, you may be in violation of the law or
an accident could result.<
Deactivating cruise control
Press the lever upward or downward, arrow3.
The displays in 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/SMG'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 page56
>When you apply the handbrake
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 handbrake or a DSC intervention. Distance 1
Distance 2
Distance 3
This distance is always set when
the system is used for the first
time after starting the engine.
Distance 4

Driving
56
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 nual trans mis sio n: when you
shift gears very slowly or shift to idle posi-
tion
>With automatic transmission/SMG: 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 are currently not met. Calling up Check Control
messages, refer to page66.<
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.

Technology for driving comfort and safety
68 thin and wedge-shaped objects, etc. Low
objects already indicated, such as a curb, may
enter the sensors' dead areas before a continu-
ous audible signal is given. Higher, protruding
objects, such as ledges, may not be detectable.
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 page99.
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 brake application. If the brake is
released, DBC will be switched off.
DSC Dynamic Stability Control
DSC prevents the driving wheels from losing
traction when you pull away from rest or accel-
erate. DSC 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 individual
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.<
Deactivating DSC
Press the button for at least 3 seconds; the indi-
cator lamps for DSC in the instrument cluster
light up. Dynamic Traction Control DTC and
DSC have been simultaneously deactivated.
Stabilizing and drive-output promoting actions
are no longer executed.
To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC
Press the button again; the indicator lamps in
the instrument cluster go out.
To control
If the indicator lamp flashes:
DSC controls the drive forces and
brake forces.
If the indicator lamps are on:
DSC has been completely deacti-
vated.
DTC Dynamic Traction Control
DTC is a version of DSC in which the drive out-
put is optimized for particular road conditions,
e.g. unplowed snow-covered roads. The sys-
tem assures the maximal drive output, but with

Reference
At a glance
Controls
Driving tips
Mobility
123
Maintenance
BMW Maintenance System
The BMW Maintenance System supports the
preservation of the traffic and operating safety
of your BMW. The service schedule also
includes operations related to the vehicle's
comfort and convenience features, such as
replacement of the filters for the inside air. The
objective is to optimize efforts with respect to
minimal vehicle maintenance 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.
In the instrument cluster, you can have the
remaining times or distances for selected main-
tenance tasks and any legally prescribed dates
displayed, refer to page63:
>Engine oil
>Brakes: separately for front and rear
>Microfilter/activated-charcoal filter
for auto-
matic climate control
>Microfilter
for air conditioner
>Brake fluid>Spark plugs
>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 in the instrument
cluster is always set correctly, refer to
page65; otherwise the effectiveness of Condi-
tion 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.<

Indicator and warning lamps
144Engine speed too high Select a higher gear if the driving situa-
tion permits you to do so.
Active cruise control deactivated:
>Driving stability control systems are
active or
>handbrake is applied or
>the vehicle has not achieved a
speed of 20 mph or 30 km/h or
>engaged gear not suitable for the
speed being driven orKeep a safe distance.
>radar sensor dirty Clean the radar sensor, refer to
page56.
Active cruise control failed Keep a safe distance.
Have the system checked.
Park Distance Control failed Have the system checked.
Bulb of exterior lighting system failed Have the exterior lighting checked as
soon as possible.
Low-beam headlamp or fog lamp failed Have the low beams checked as soon
as possible.
High-beam headlamp failed Have the high-beam headlamps
checked.
Headlamp beam throw adjustment
system failedHave the headlamp beam throw adjust-
ment system checked.
Adaptive Head Light failed
Coolant level too low Add coolant immediately, refer to
page121.
Engine oil pressure too low Stop immediately and switch off the
engine. You cannot continue your jour-
ney. Contact your BMW Center.
Engine oil level too low Add engine oil immediately; refer to
page119 for more information.
12Cause What to do

Everything from A to Z
152
Everything from A to Z
Index
A
ABS Antilock Brake
System68
ACC, refer to Active cruise
control53
Acceleration assistant with
the sequential manual
gearbox SMG47
Accessories, refer to The
individual vehicle5
Activated-charcoal filter for
automatic climate control85
Active cruise control53
– indicator lamps56
– malfunction57
– selecting distance55
– sensor56
Active steering73
– warning lamp73
Adapter for spare key18
Adaptive Head Light77
Additives
– coolant121
Adjusting temperature inside
the car, refer to Air
conditioner81
Adjusting temperature inside
the car, refer to Automatic
climate control83
Airbags74
– sitting safely31
– warning lamp75
Air conditioner80
Air conditioning mode
– air conditioner81
– automatic climate control83
– ventilation82,85
Air distribution
– automatic84
– individual81
– manual81
Air flow rate81,84Airing, refer to
Ventilation82,85
Air outlets, refer to Air
vents80
Air pressure, tires108
Air recirculation, refer to
Recirculated-air
mode81,84
Air supply
– air conditioner81
– automatic climate control83
– ventilation82,85
Air vents80
AKI, refer to Fuel
specifications
106
Alarm system24
– avoiding unintentional
alarms25
– interior motion sensor25
– switching off an alarm25
– tilt alarm sensor25
All-season tires, refer to
Winter tires117
Ambient air, refer to
Recirculated-air
mode81,84
Antifreeze
– coolant121
– washer fluid50
Anti-theft alarm system, refer
to Alarm system24
Anti-theft system19
Anti-trapping mechanism
– glass sunroof, electric29
– windows28
Approved axle loads, refer to
Weights150
Approved gross vehicle
weight, refer to Weights150
Armrest, refer to Center
armrest89Ashtray
– front91
– rear91
Assistance systems, refer to
Dynamic Stability Control
DSC68
AUC Automatic recirculated-
air control84
Audio device, external90
Automatic
– air distribution84
– air flow rate84
– cruise control51,53
– headlamp control76
Automatic climate control80
– automatic air distribution84
Automatic curb monitor37
Automatic recirculated-air
control AUC84
Automatic transmission with
Steptronic47
– interlock47
– overriding selector lever
lock48
– shiftlock47
– sport program48
AUTO program for automatic
climate control84
AUX-IN
– port90
Average fuel consumption60
– setting the units62
Average speed60
Avoiding unintentional
alarms25
Axle loads, refer to
Weights150
B
Backrests, refer to Seats31
Backrest width adjustment33

Reference
At a glance
Controls
Driving tips
Mobility
157
Homepage4
Hood118
Horn10
Hot exhaust system98
Hydraulic brake assist, refer to
Dynamic Brake Control68
Hydroplaning99
I
Ice warning59
Ignition42
– switched off42
– switched on42
Ignition key, refer to
Integrated key/remote
control18
Ignition key position 1, refer to
Radio readiness42
Ignition key position 2, refer to
Ignition on42
Ignition lock42
Indicator and warning
lamps13,136
Individual air distribution81
Individual settings, refer to
Personal Profile19
Initializing
– compass, refer to
Calibrating88
– Flat Tire Monitor FTM72
– glass sunroof29
Instrument cluster12
Instrument lighting78
Instrument panel, refer to
Cockpit10
Integrated key18
Integrated universal remote
control86
Interior lamps79
– remote control20
Interior motion sensor25
Interior rearview mirror37
– automatic dimming
feature99
Interior rearview mirror with
digital compass87
Interlock47Intermittent mode of the
wipers50
J
Jacking points129
Jumpering, refer to Jump
starting132
Jump starting132
K
Key, refer to Integrated key/
remote control18
Keyless Go, refer to
Convenient access25
Keyless opening and closing,
refer to Convenient
access25
Key Memory, refer to Personal
Profile19
Kick-down48
– automatic transmission with
Steptronic48
– sequential manual gearbox
SMG46
Knock control106
L
Lamps, refer to Parking lamps/
low beams76
Lamps and bulbs, replacing
bulbs125
Lap-and-shoulder safety
belt36
Lashing eyes, refer to
Securing cargo101
LATCH child-restraint fixing
system40
LEDs light-emitting
diodes125
Length, refer to
Dimensions149
License plate lamp, replacing
bulbs128
Light-emitting diodes
LEDs125
Lighter91Lighting
– instruments78
– lamps and bulbs125
– of the vehicle, refer to
Lamps76
Light switch76
Limit145
Loading
– securing cargo101
Load securing equipment,
refer to Securing cargo101
Lock buttons in the doors,
refer to Locking23
Locking
– adjusting confirmation
signal21
– from inside23
– from outside20
– without remote control, refer
to Convenient access25
Locking and unlocking doors
– from inside22
– from outside20
Low beams76
– automatic76
– replacing bulbs126
Lower back support, refer to
Lumbar support32
Luggage compartment
– capacity150
– convenient access26
– folding up the floor panel93
– lamp79
– opening from inside23
– opening from outside23
Luggage compartment lid23
– convenient access26
– unlocking with remote
control21
Luggage compartment lid,
refer to Tailgate23
Luggage compartment net,
refer to Securing cargo101
Luggage rack, refer to Roof-
mounted luggage rack101
Lumbar support32

Reference
At a glance
Controls
Driving tips
Mobility
161
Steering wheel38
– adjustment38
– buttons on steering
wheel11
– lock42
Steering with variable ratio,
refer to Active steering73
Steptronic, refer to Automatic
transmission with
Steptronic47
Storage compartments90
Storing seat positions, refer to
Seat and mirror memory35
Storing tires117
Stowage, refer to Storage
compartments90
Summer tires, refer to Wheels
and tires108
Sun blinds89
Switches, refer to Cockpit10
Switching off
– engine43
Switching off the engine
– start/stop button42
Switching the cooling function
on and off85
Symbols4
T
Tachometer59
Tailgate
– locking or unlocking
separately24
– opening and closing23
– opening from inside23
– opening from outside23
Tail lamps127
– replacing bulbs128
Tank contents, refer to
Capacities151
Technical data148
Technical modifications5
Telephone
– installation location, refer to
Center armrest89
– refer to separate Owner's
ManualTemperature adjustments
– air conditioner81
– automatic climate control83
Temperature display
– ice warning59
– outside temperature59
– setting the units62
Temperature of the coolant,
refer to Coolant
temperature59
Tensioning straps, refer to
Securing cargo101
The individual vehicle5
Thigh support33
Third brake lamp, refer to
Center brake lamp128
Tilt alarm sensor25
Tilt function, passenger-side
mirror37
Tire inflation pressures108
Tire pressure
– loss72
Tire pressure monitoring,
refer to Flat Tire Monitor71
Tire puncture, refer to Flat Tire
Monitor72
Tire Quality Grading114
Tires
– age114,116
– breaking in98
– changing, refer to Changing
wheels129
– condition115
– damage115
– inflation pressure108
– minimum tread depth115
– new tires116
– pressure monitoring, refer to
Flat Tire Monitor71
– puncture72
– Run-Flat Tires116
– size114
– wear indicators, refer to
Minimum tread depth115
– winter tires117
Tools, refer to Onboard tool
kit125
Torque148
Tow bar134Tow fitting
– screw thread133
Tow fittings133
Tow fittings for tow-starting
and towing away133
Towing133
– methods134
Towing away
– car with automatic
transmission133
Tow rope134
Tow-starting133
– sequential manual gearbox
SMG134
Track width, refer to
Dimensions149
Traction-assist feature, refer
to DSC68
Traction control, refer to DSC
Dynamic Stability
Control68
Trailer towing
– towing loads and gross
weight150
Transmission
– automatic transmission with
Steptronic47
– manual transmission44
– overriding selector lever lock
for automatic transmission
with Steptronic48
– sequential manual gearbox
SMG45
Transporting children
safely39
Transport securing device,
refer to Securing cargo101
Tread depth, refer to Minimum
tire tread115
Trip-distance counter, refer to
Trip odometer59
Triple turn signal activation49
Trip odometer59
Trunk
– lid, refer to Luggage
compartment lid23
Trunk lamp, refer to Luggage
compartment lamp79