2003 BMW 760LI SEDAN brakes

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Reference
63
You have two separate options for
engaging the parking brake:
>Manually, by briefly pressing the button
>Automatically, through activation of the
Automatic Hold mode, refer to page 64.
An electrohydraulic mechanism then
engages the parking brake to prevent the
rear wheels from turning whenever you
switch off the engine.
When the engine is running, parking brake
engagement is controlled by the brake
system's hydraulic circuits, which act on
the disc brakes at the front and rear
wheels.
Brake pedal feel
Because this function is activated using the
brake system's hydraulic circuits, the
response of the brake pedal may change
slightly. Engagement may also be accom-
panied by activation noise Ð this is normal.
Manual engagement
Press the button briefly, the
word PARK appears briefly in
the Info Display. With the
parking brake set, the indicator
lamp lights up red in the
Info Display, refer to page 14.
With the ignition off, the indicator
lamp goes out after a brief
period.<
Manual release
With the ignition on, briefly
press the button: the indicator
lamp in the Info Display goes
out.
Provided that the remote control unit
is engaged in the ignition lock, you
can also release the parking brake after the
engine has been switched off. This function
is intended for use in automatic car
washes, etc.<
When leaving the vehicle, always
release the remote control unit from
the detent in the ignition lock; this precau-
tion prevents children from disengaging the
parking brake, etc.
The parking brake can still be engaged at
any time when the remote control unit is
released from the detent. It is only possible
to disengage the parking brake with the
ignition on.<
If exceptional circumstances should
make it necessary to engage the
parking brake while the vehicle is in motion,
maintain pressure on the button.
The indicator lamp appears in red in the
Info Display. A gong sounds at the same
time.
The brake lamps come on.
The vehicle continues to brake automati-
cally for as long as you maintain pressure
on the button.<
When you brake the vehicle to a vir-
tual stop, i.e., down to a speed of
approximately 2 mph/3 km/h or below, the
parking brake remains engaged.
The indicator lamp in the Info Display
lights up red. Press the button briefly to
disengage the parking brake manually.<
Automatic Hold
You can activate this feature after starting
the engine; it then remains operational until
the next time the engine is switched off.
This feature provides supplementary sup-
port during vehicle operation by automati-
cally engaging and releasing the parking
brake during stops at traffic lights, in stop-

Driving
66 the luggage compartment lid, refer to
page 195.
Insert the emergency-release tool in the
screwdriver handle as shown in the illustra-
tion.
Releasing
1.Remove the floor mat and the cover on
the spare tire
2.Guide the emergency-release tool with
the screwdriver handle into the
opening, arrow 1
3.Apply the open-end wrench to the
hexagon on the emergency-release
tool.
Press against the resistance from the
spring to guide the emergency-release
tool all the way in, then hold it in place.
Turn the emergency-release tool in the
direction indicated by arrow 2, con-
tinuing until you hear the mechanism
snap into place and feel resistance;
maintain pressure on the tool after the
mechanism engages
4.Use the open-end wrench to turn the
emergency-release tool against the
drive unit's mechanical resistance, con-
tinuing to rotate it in arrow direction 2
until you feel a substantial increase in
turning effort.
To prevent possible damage to the
rear brakes, always make sure that
the parking brake is completely released
before driving the vehicle.< 5.Return the tools to their places
6.Return the spare tire cover and the floor
mat to their original locations.
Have any defects repaired at the
nearest BMW center. The technicians
can also return the parking brake to normal
operational status after it has been
released manually in response to malfunc-
tion.<
Following manual release, the actual
status of the parking brake may vary
from that displayed by the indicator lamp.<
Operation after interruptions in
power supply
The parking brake may only be used
again, if it was released manually after
an interruption in power supply, i.e. as a
result of a discharged or disconnected bat-
tery. If this is not done, the parking brake
may fail to operate correctly. Even with the
parking brake engaged, there would be a
danger of the vehicle rolling on steep
hills.<
Once the electrical power supply has been
restored you can again use the parking
brake:
With the ignition on and the
vehicle stationary, press the
button briefly three times at
intervals of approx. 5 seconds.
This initializes the system as
follows:
>Initializing the released setting
>Engage Ð the system registers the new
status and the brake setting is initial-
ized. The indicator lamp in the
Info Display lights up red.
>Release Ð the parking brake is ready for
operation. The indicator lamp in
the Info Display goes out.

Driving
70 To obtain maximum acceleration, for
passing maneuvers, etc., during
operation in the manual mode, use the
kickdown or downshift manually.<
Malfunctions
A status report will appear in the Check
Control to alert you to any malfunctions in
the transmission-control system. Please
note any supplementary information that
appears in the Control Display. The direc-
tional arrows also start to flash in the Info
Display.
While it will remain still possible to move
the selector lever to any desired position,
the transmission will revert to operation in
its default mode with only a limited number
of forward gears.
Some types of malfunction will make it
impossible to engage all gears.
The engine may respond with reduced
output when accelerating from a standing
start.
If this happens, avoid extreme engine loads
and consult the nearest BMW center.
If no status messages appear in the
Info Display you should accelerate
carefully to confirm that you are driving in
the desired direction.
Never work in the engine compartment
with any of the forward or reverse gears
engaged, as the vehicle could start to
move. Engage the parking brake, refer to
page 62.<
Releasing transmission lockout
manually
You can respond to any interruptions in the
supply of electrical power, for instance, if
the battery is discharged or disconnected,
by releasing the transmission lockout man-
ually.
To prevent the drive wheels from
locking up and sliding, the transmis-
sion lockout must always be released man-
ually before the vehicle is towed.< Press the brake pedal before
releasing the transmission lockout
manually. If the brakes are not applied, the
vehicle could start to roll if parked on a
steep slope.
The transmission lockout should only be
released for towing. Remember to engage
the transmission lockout when you repark
the vehicle after moving it.
Should it also be necessary to release the
parking brake manually, owing to a dis-
charged battery, etc., always adhere to the
following sequence:
1.Start by manually releasing the parking
brake, refer to page 65
2.Then proceed to manually release the
transmission lockout.<
Jump-starting and towing, refer to
pages 202 and 203.
Releasing
1.Use the vehicle key to release the cover
panel beneath the instrument panel by
turning the lock counterclockwise, then
fold down the cover
2.Use the strap 1 to pull out the release
lever, continuing until it snaps into

Driving
76 trips, the system can reduce fatigue and
tension, while increasing your enjoyment of
driving. Please use it safely and respon-
sibly.
In addition to holding a steady cruising
speed, if you do encounter slower vehicles
ahead, active cruise control will Ð within the
scope of given possibilities Ð adjust your
vehicle's speed automatically so that one
can flow with the traffic without frequent
intervention by the driver. If, for example,
while cruising at the selected speed, you
begin to approach a slower vehicle ahead
of you in the same lane, the system will
reduce your vehicle's speed to the same as
that of the vehicle ahead to maintain your
selected distance setting between your
vehicle and the vehicle ahead. There are
four settings for distance, which is addi-
tionally speed-dependent. Based on your
selected distance setting, the system auto-
matically decreases the throttle setting and
lightly applies the brakes if necessary. The
vehicle brake lamps will automatically illu-
minate to signal a following driver to take
action. In addition, it may be necessary for
the vehicle to downshift to maintain the dis-
tance setting selected. If the vehicle ahead
speeds up or when the lane ahead
becomes clear, your vehicle will accelerate
to the speed you have selected by
increasing the throttle setting and shifting
gears as needed.
Active cruise control is not and must
not be used as a collision avoidance/
warning system.<
Since this active cruise control
system is a new technology and oper-
ates differently from conventional cruise
control systems which you may be accus-
tomed, you are strongly urged to read all of
the pages relating to this system before
use. Pay special attention to the informa-
tion contained in the Things to know about
active cruise control section in this manual
beginning on page 79.<
Info Display screen contents
1Stored desired speed display
2Detected vehicle display. Lights up
when vehicle driving ahead is detected
3Selected distance to vehicle driving
ahead
4Digital speed display.
Appears briefly when you select your
desired speed, refer to page 77.
1, 2 and 3 are displayed when the
system is activated.<
The system is activated.
The display appears as soon as
you activate the system and no
vehicle is detected driving
ahead.
Vehicle detected.
The display lights up when a
vehicle is detected driving
ahead.

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Reference
79
Distance 3
Distance 4
This distance is always set
when the system is used for the
first time after starting the
engine. Use good judgment to select the
appropriate following distance given
road conditions, traffic, applicable laws
and driving recommendations for safe fol-
lowing distance.<
Things to know about active cruise control
As with conventional cruise control
systems, active cruise control in no
way diminishes or substitutes for the
driverÕs own personal responsibility, alert-
ness and awareness 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; heavy traffic such as
during rush hour; 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,
service/parking areas or toll booths. It is
also important to regulate your vehicle's
speed and distance setting within appli-
cable legal limits. Always be ready to take
action or apply the brakes if necessary,
especially when the system is actively fol-
lowing a vehicle in front of you.<
Always remember that the range and
ability of the system does have phys-
ical limitations. It will not apply the brakes or decelerate your vehicle when there is a
slow-moving vehicle, 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 type
of potential traffic such as a rider on horse-
back. It is also possible that the system
may not detect smaller moving objects
such as motorcycles or bicycles. Be espe-
cially alert when encountering any of these
situations as the system will neither auto-
matically 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.<
If while your vehicle is actively following a
vehicle in front of you and the vehicle
ahead speeds up or the lane ahead
becomes clear, then your vehicle will
accelerate to the speed you have selected.
Be aware that changing to a clear, unob-
structed lane will also result in your vehicle
accelerating.

Driving
80 Be certain to deactivate the system
when you pull into an exit lane for a
highway off-ramp.<
Also, vehicles traveling in a staggered
manner on a highway may cause a delay in
the system's reaction to a vehicle in front of
you or may cause the system to react to a
vehicle actually in the lane next to you.
Always be ready to take action or apply the
brakes if necessary.
Active cruise control can only decelerate
the vehicle to approx. 20 mph (30 km/h). If
the system reduces vehicle speed below
20 mph (30 km/h) or if DSC/ABS is
engaged while driving, the system will
automatically deactivate.
Remember, the system cannot stop
your vehicle. In addition, the system is
deactivated whenever the driver applies
the vehicle brakes, shifts the transmission
from drive/D to neutral/N, or deactivates
DSC. After any deactivation, the system
will no longer automatically activate the
vehicle brakes, which means the driver
must intervene and resume manual
braking. You should then reactivate the
system only when you are fully aware of the
prior speed and distance settings.<
Active cruise control may brake when you
reduce the stored desired speed; however,
the driver must constantly monitor traffic
and intervene if necessary.
When you switch off the engine or ignition,
active cruise control is fully switched off,
too, and any settings you have selected are
canceled.
Behavior in curves
Because of the limited range of the system,
it is possible that in curves or on the peaks
and valleys of hilly roads, a vehicle ahead
may be recognized late, or not at all. There-
fore, it is up to the driver to select a speed
that is prudent in view of the curves and
terrain of the roadway.
In approaching a curve, it is possible that
active cruise control would react briefly to a
vehicle in the adjacent lane. In addition, the
system can sense if your vehicle is in a
curve and may not accelerate. If your
vehicle decelerates in either case, you can
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

Technology for comfort, convenience and safety
96 To maintain optimal stability, drive
with the system on whenever pos-
sible.<
Reactivating DSC
Select "Settings". Select "DSC" and con-
firm your entry. DSC is now activated. The
indicator lamp in the Info Display goes out.
The laws of physics cannot be
repealed, even with DSC. An approp-
riate driving style always remains the
responsibility of the driver. Avoid using the
additional safety margin provided by the
system as an excuse for taking unneces-
sary risks.
When DTC is active, DSC provides only
limited system response up to a speed of
approximately 45 mph (70 km/h). Interven-
tion for stability-enhancement is reduced.
Do not make any modifications to the DSC
system. Never allow anyone other than
authorized professional technicians to
carry out service or repairs on the DSC
system.<
DBC Dynamic Brake Control
When you apply the brakes rapidly, this
system automatically produces the max-
imum braking force boost and thus helps to
achieve the shortest possible braking dis-
tance during panic stops. This system
exploits all of the benefits provided by ABS.
Do not reduce the pressure on the brake
pedal for the duration of the brake applica-
tion. When the brake pedal is released, the
DBC is deactivated.
In the event of a malfunction, the
warning lamp comes on with a
yellow light. Have the system
checked and repaired at your BMW center
as soon as possible.
Check Control messages, refer to page 85.
Please note the supplementary information
provided in the Control Display.
Warning lamp on Canadian models.
Driving stability control/
ABS Antilock Braking
System
The concept
ABS enhances active safety by preventing
the wheels from locking under braking.
ABS incorporates CBC and EBV.
In case of malfunction
If the indicator lamp lights up in
yellow, 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.
CBC Cornering Brake Control
CBC is a technical advance based on ABS.
It provides further enhancements in vehicle
stability and steering response during lane
changes and cornering at high rates of lat-
eral acceleration.
EBV Electronic brake-force
distribution
EBV controls the brake system's applica-
tion pressure at the rear wheels to ensure
stable deceleration.
In case of malfunction
If the brake system warning lamp
lights up in red, appearing together
with the yellow indicator lamps for
ABS and DSC: the stability control
is no longer operational.
If all three lamps light up in yellow:
malfunction in the stability control
systems.
While you may continue, you should
remember to proceed cautiously and drive
defensively while avoiding full brake appli-
cations.
Please have the system checked at the
nearest BMW center.

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Reference
101
The symbol will appear in yellow in the
Check Control and a message will appear.
You will also see the same message
>in the event of a system fault
>if a wheel is mounted without the
appropriate TPM electronics
>if, in addition to the spare tire, addi-
tional wheels with TPM electronics are
on board.
Please refer to the additional information
supplied in the Control Display, and have
the system inspected at your BMW center.
Self-leveling suspension*
In the event of malfunction
A Check Control message
appearing together with this symbol
indicates a malfunction in the self-
leveling suspension. Please take note of
the additional information in the Control
Display.
Stop and inspect the vehicle. If the rear of
the vehicle is visibly lower than the front,
possibly accompanied by a tilt noticeable
when you compare the left rear with the
right rear, you should respond by immedi-
ately proceeding to the nearest BMW
center. Drive with appropriate caution in
the meantime. The vehicle has reduced
ground clearance and driving comfort may
be noticeably reduced. Even if the attitude
of the vehicle is normal, you should consult
the nearest BMW center if the warning
lamp indicates a system fault.
Adaptive brake lamp
The adaptive brake lamp indicates the
intensity with which you are applying your
brakes to drivers of following vehicles.
The display consists of two stages:
>Normal braking:
The brake lamps in the tail lamp assem-
blies and the high-mount brake lamp on
the rear tray light up during braking
>Heavy braking and braking with ABS:
The tail lamps also light up with the
same intensity as the standard brake
lamp units to enhance the warning
effect of the brake lamps.