2004 BMW 525I SEDAN brake sensor

Driving
64 choose to overcome the deceleration by
briefly pressing the accelerator pedal.
Driver interventions
Anytime the driver presses down on
the accelerator pedal, any automatic
braking action by the system is interrupted
until the pedal is fully released. After doing
this, release the accelerator and the system
again controls your cruising speed and dis-
tance setting. While driving with activated
system, resting your foot on the accelerator
pedal will cause the system not to brake
even if necessary. Be certain that floormats
or other objects on the vehicle floor do not
interfere with movement of the accelerator
pedal.<
While active cruise control is capable
of braking your vehicle automatically
when you approach a slower vehicle
ahead, it is important to be aware that the
ability of the system to apply the brakes is
also limited, if you are driving down a steep
grade or when you reduce your desired
speed sharply. The system cannot stop
your vehicle. It uses only a portion of brak-
ing system capacity and does not utilize the
full capacity of the vehicle braking system.
Therefore, the system cannot decrease
your speed for large differences in speed
between your vehicle and the vehicle
ahead. Examples: during emergency brak-
ing, when you approach a vehicle traveling
at a much lower speed than your own
speed such as approaching a toll booth or
when a much slower vehicle cuts in front of
you at close range.<
Whenever active cruise control
recognizes a situation that
requires driver braking because
the system capacity has been
reached or has been exceeded,
the system alerts the driver by flashing this
symbol in the instrument cluster and
sounding a signal.
Swerving vehicles
When a vehicle moves from an adjacent
lane into your lane, active cruise control will
not recognize this vehicle until it is fully in
your lane ahead of your vehicle.
Malfunctions
If there is a malfunction, the indica-
tor lamp symbol is displayed in the
instrument cluster. Please note any
supplementary information that appears on
the Control Display.
The build-up of foreign material, e.g.,
snow, ice, dirt, road debris, etc., can lead
to reduced detection performance of active
cruise control. You should check the sen-
sor under the front bumper and clean it as
necessary prior to driving your vehicle. If
the sensor becomes covered by foreign
material or has a malfunction, it is possible
that the sensor will no longer be able to
detect vehicles in front of you. After the
system recognizes that the sensor is no
longer functional, a message is displayed
on the Control Display and an acoustic sig-
nal is emitted.

Controls
77Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
ence of objects in green before they are
close enough to generate a signal tone.
Control Center, for principle details, refer to
page 16:
1.Open the start menu by pressing the
button
2.Open the menu by pressing the con-
troller
3.Select "Vehicle settings" and press the
controller
4.Select "PDC" and press the controller
5.Select "Monitor display on" and press
the controller.
is displayed with the PDC image
switched on.
The display then appears on the Control
Display as soon as PDC is automatically
activated.
The previous display automatically reap-
pears after the system is deactivated.
Limits of the system
Even with PDC, final responsibility for
estimating the distance between the
vehicle and any obstructions always
remains with the driver. Even when sensors are involved, there is a blind spot in which
objects cannot be detected. The system is
also subject to the physical limits that apply
to all forms of ultrasonic measurement,
such as those encountered with thin and
wedge-shaped objects, etc. Low objects
already displayed, e.g. a curb, can also dis-
appear from the detection area of the sen-
sors again before a continuous tone
sounds.
Loud noises from outside and inside your
vehicle may prevent you from hearing the
PDC signal tone.<
Keep the sensors clean and free of ice
or snow in order to ensure that they
will continue to operate effectively.
Do not apply high pressure spray to the
sensors for a prolonged period of time.
Keep the spray at least 4 in/10 cm away
from the sensors.<
Driving stability control/
ABS Antilock Brake System
Your BMW is equipped with an extended
array of systems designed to enhance and
maintain vehicle stability under extreme
conditions. The following section describes
these functions based on ABS and DSC.
The concept
ABS enhances active safety by preventing
the wheels from locking under braking.
The ABS is operational every time you start
the engine. ABS includes the functions
CBC Cornering Brake Control and EBV
Electronic Brake Force Distribution.
In case of malfunction
If the indicator lamp lights up in yel-
low, this indicates that ABS has
been deactivated in response to a
system malfunction. Conventional braking
efficiency remains available without limita-
tions. Please have the system inspected at
your BMW center.

Mobility
181Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Maintenance
The BMW Maintenance
System
The BMW Maintenance System is
designed to ensure that your vehicle will
continue to furnish consistent reliability
combined with optimal safety. 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 ultimate objective is
to ensure economical maintenance by pro-
viding the ideal service for your vehicle.
Should the day come when you decide to
sell your BMW, you will find that a complete
dealer service history is an asset of inesti-
mable value.
CBS Condition Based Service
CBS is a more advanced version of the Ser-
vice Interval Display. Sensors combine with
highly-specialized algorithms to supply
service information that reflects your vehi-
cle's actual operating conditions more pre-
cisely than ever before.
The system now provides individual dis-
plays of the times or distances remaining
until the deadlines for specific service
operations as well as legally prescribed
inspections:
>Engine oil
>Brakes: separate for front and rear
>Brake fluid
>Spark plugs >Vehicle check
>Depending on national regulations:
legally prescribed inspections.
CBS monitors both current and upcoming
service requirements. Your vehicle stores
this information continuously in the ignition
key while the vehicle is being driven. You
should therefore hand over to the BMW
Service Advisor the key you last used to
drive when you take your vehicle for ser-
vice. After accessing the data stored in the
vehicle key, your BMW Service Advisor is
able to suggest precisely the right array of
service procedures for your own individual
vehicle.
By letting you define a service and mainte-
nance regimen that reflects your own indi-
vidual requirements, Condition Based Ser-
vice builds the basis for trouble-free
driving.
You can find more detailed information on
the service requirement display on
page 66.
Make sure the date in the Control
Center is always set correctly, refer to
page 75, as otherwise the effectiveness of
Condition Based Service CBS is not
ensured. Booklet for US models and Warranty
and Service Guide Booklet for Cana-
dian models
Please consult your Service and Warranty
Information Booklet for US models and
Warranty and Service Guide Booklet for
Canadian models for additional information
on service requirements.
Have service and repair operations
performed at your BMW center.
Take the time to ensure that these service
procedures are confirmed by entries in
your vehicle's Service and Warranty Infor-
mation Booklet for US models and War-
ranty and Service Guide Booklet for Cana-

Everything from A to Z
208 Heating 90
Ð mirrors 43
Ð steering wheel 44
Heating while stopped 92
Heavy cargo, refer to
Stowing cargo 109
Height, refer to
Dimensions 199
Height adjustment
Ð head restraints 39
Ð seats 37
Ð steering wheel 43
High beams 88
Ð headlight flasher 88
Ð indicator lamp 13
Ð replacing the bulbs 185
Hills 107
Holder for beverages 99
"Horn" 44
Horn 10
"Hour memo" 75
"House number" for
destination entry 117
Hydraulic brake assistant,
refer to DBC 79
Hydroplaning 106, 174
I
Ice warning 65
iDrive, refer to Control
Center 16
Ignition key 26
Ignition key positions, refer
to Ignition lock 49
Ignition lock 49
Independent ventilation
Ð switching on and off
directly 94
Independent ventilation/
heating
Ð entering switch-on
times 95
Ð preselecting switch-on
times 95Indicator/warning lamp
Ð active steering 82
Ð airbags 84
Ð Flat Tire Monitor 81
Ð front fog lamps 11
Ð overview 13
Ð safety belt warning 40
Individual air distribution 93
Individual button
assignment options on
steering wheel 44
Individual settings, refer to
Key Memory 26
Inflation pressure, refer to
Tire inflation
pressure 170
"Information" for
navigation 118
Information for navigation
Ð on a different city 118
Ð on city of destination 118
Ð on current position 118
"Information on
destination" 119
"Input map" 118
Installation location
Ð CD changer 144
Ð navigation computer 114
Ð portable phone 151
Instructions for navigation
system, refer to Voice
instructions 124
Instrument cluster 12
Instrument combination,
refer to Instrument
cluster 12
Instrument lighting 88
Instrument panel, refer to
Instrument cluster 10
Integrated universal remote
control 96
Interesting destination 118
"Interim time" 73
Interior lamps 89
Ð remote control 28
Interior mirror, refer to
Interior rearview mirror 43
Interior motion sensor 33
Ð switching off 28Interior rearview mirror 43
Ð automatic dimming
feature 43
Interlock, refer to Steering
locked 49
Intermittent mode of the
wipers 57
J
Jacking points 188
Joystick, refer to Control
Center 16
Jump-starting 192
K
Key Memory 26
"Keypad" 156
Keys 26
Key set, refer Central keys
with remote control 26
Kickdown 55
Knock control 169
L
Lamps and bulbs 184
"Languages" 74
"Languages" for
navigation 124
Lashing eyes, refer to
Securing the load 109
"Last seat position" 38
LATCH child-restraint
fixing 47
LEDs light-emitting
diodes 89
Length, refer to
Dimensions 199
Letter symbol on portable
phone 156
License plate light
Ð replacing the bulbs 186
Light-emitting diodes
LEDs 89
Lighter 100
Ð socket 100
"Lighting" 56, 87