2013 BMW 640I COUPE brake

Driving stability control systemsVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
Antilock Brake System ABS
ABS prevents locking of the wheels during brak‐
ing.
The vehicle remains steerable even during full
brake applications, thus increasing active
safety.
ABS is operational every time you start the en‐
gine.
Brake assistant
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost. It thus helps to achieve the shortest
possible braking distance during full braking.
This system utilizes all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the full braking.
Adaptive brake assistant
In combination with the Active Cruise Control,
this system ensures that the brakes respond
even more rapidly when braking in critical situa‐
tions. Refer also to Collision warning, refer to
page 102.Drive-off assistant
This system supports driving away on gradients.
The parking brake is not required.1.Hold the vehicle in place with the foot brake.2.Release the foot brake and drive away with‐
out delay.
After the foot brake is released, the vehicle is
held in place for approx. 2 seconds.
Depending on the vehicle load, the vehicle may
roll back slightly.
Driving off without delay
After releasing the foot brake, start driving
without delay, since the drive-off assistant will
not hold the vehicle in place for more than ap‐
prox. 2 seconds and the vehicle will begin rolling
back.◀
DSC Dynamic Stability
Control
The concept
DSC prevents traction loss in the driving wheels
when driving away and accelerating.
DSC also recognizes unstable vehicle condi‐
tions, such as fishtailing or nose-diving. Subject
to physical limits, DSC helps to keep the vehicle
on a steady course by reducing engine speed
and by applying brakes at individual wheels.
Adjust your driving style to the situation
An appropriate driving style is always the
responsibility of the driver.
The laws of physics cannot be repealed, even
with DSC.
Therefore, do not reduce the additional safety
margin by driving in a risky manner.◀
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Indicator/warning lampsThe indicator lamp flashes: DSC con‐
trols the drive forces and brake forces.
The indicator lamp lights up: DSC has
failed.
Deactivating DSC: DSC OFF
When DSC is deactivated, driving stability is re‐
duced during acceleration and when driving in
bends.
Stabilizing interventions by the Integral Active
Steering system are only performed by the rear
axle steering.
To increase vehicle stability, activate DSC again
as soon as possible.
Deactivating DSC Press and hold the button, but not lon‐
ger than approx. 10 seconds, until the
indicator lamp for DSC OFF lights up in the in‐
strument cluster and DSC OFF is displayed.
The DSC system is switched off.
Activating DSC Press the button.
DSC OFF and the DSC OFF indicator
lamp go out.
Indicator/warning lamps
When DSC is deactivated, DSC OFF is dis‐
played in the instrument cluster.
The indicator lamp lights up: DSC is de‐
activated.DTC Dynamic Traction
Control
The concept
The DTC system is a version of the DSC in which
forward momentum is optimized.
The system ensures maximum forward momen‐
tum on special road conditions, e.g., unplowed
snowy roads, but driving stability is limited.
It is therefore necessary to drive with appropri‐
ate caution.
You may find it useful to briefly activate DTC un‐
der the following special circumstances:▷When driving in slush or on uncleared,
snow-covered roads.▷When rocking the vehicle or driving off in
deep snow or on loose surfaces.▷When driving with snow chains.
Deactivating/activating DTC Dynamic
Traction Control
Activating the Dynamic Traction Control DTC
provides maximum traction on loose ground.
Driving stability is limited during acceleration
and when driving in bends.
Activating DTC Press the button.
TRACTION is displayed in the instru‐
ment cluster and the indicator lamp for DSC
OFF lights up.
Deactivating DTC Press the button again.
TRACTION and the DSC OFF indicator
lamp go out.
Indicator/warning lamps
When DTC is activated, TRACTION is displayed
in the tachometer.
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The indicator lamp lights up: DTC Dy‐
namic Traction Control is activated.
xDrive
xDrive is the all-wheel-drive system of your ve‐
hicle. Concerted action by the xDrive and DSC
further optimize traction and driving dynamics.
The xDrive all-wheel-drive system variably dis‐
tributes the drive forces to the front and rear
axles as demanded by the driving situation and
road surface.
HDC Hill Descent Control
The concept
HDC is a downhill driving assistant that auto‐
matically controls vehicle speed on steep down‐
hill gradients. Without applying the brakes, the
vehicle moves at slightly more than walking
speed.
Hill Descent Control can be activated at speeds
below approx. 22 mph/35 km/h. When driving
downhill, the vehicle reduces its speed to ap‐
prox. walking speed and then keeps its speed
constant.
As long as there is active braking, the system is
on standby. The system does not brake the ve‐
hicle during this time.
Use HDC in low gears or in transmission position
D or R only.
Increasing or decreasing vehicle speed
Specify desired speed in the range from approx.
4 mph/6 km/h to approx. 15 mph/25 km/h using
the rocker switch of the cruise control on the
steering wheel. Vehicle speed can be changed
by lightly accelerating.▷Press up the rocker switch to the point of
resistance: the speed increases gradually.▷Press up the rocker switch past the point of
resistance: the speed increases while the
rocker switch is pressed.▷Press down the rocker switch to the point of
resistance: the speed decreases gradually.▷Press down the rocker switch past the point
of resistance: when driving forward, the
speed decreases to approx. 6 mph/10 km/h;
when reversing, the speed decreases to ap‐
prox. 4 mph/6 km/h.
Activating HDC
Press the button; the LED above the but‐
ton lights up.
Deactivating HDC Press the button again and the LED goes
out. HDC is automatically deactivated
above approx. 37 mph/60 km/h.
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Display in the instrument clusterThe selected speed is displayed
in the speedometer.▷Green: the system is actively
braking the vehicle.▷Orange: the system is on
standby.
Malfunction
A message is displayed in the instrument clus‐
ter. HDC is not available, e.g., due to elevated
brake temperatures.
Adaptive Drive
The concept
Adaptive Drive includes the following systems:
▷Dynamic Drive, refer to page 114▷Dynamic Damping Control, refer to
page 114
The system increases driving stability and driv‐
ing comfort.
Dynamic Drive
The concept
Dynamic Drive reduces the lateral inclination of
the vehicle that occurs during rapid driving in
curves or during quick evasive maneuvers.
Driving stability and driving comfort are in‐
creased under all driving conditions. The system
utilizes active stabilizer bars on the front and rear
axles that react immediately to all driving situa‐
tions.
Programs
The system offers two different programs.
The programs can be selected via the Driving
Experience Switch, refer to page 115.
SPORT
Sporty tuning for greater driving agility.
COMFORT
Comfort-oriented tuning for optimal comfort.
Dynamic Damping Control
The concept
This system reduces undesirable vehicle mo‐
tion when using a dynamic driving style or trav‐
eling on uneven road surfaces.
The system enhances driving dynamics and
comfort as required for the road surface and
driving style.
Programs
The system offers three different programs.
The programs can be selected via the Driving
Experience Switch, refer to page 115.
SPORT
Consistently sporty control of the shock absorb‐
ers for greater driving agility.
COMFORT / ECO PRO
Balanced tuning between the COMFORT+ and
SPORT or SPORT+ programs.
COMFORT+
Comfort-oriented tuning of the shock absorbers
for optimal traveling comfort.
Integral Active Steering
The concept
Integral Active Steering is a combination of Ac‐
tive Steering and rear axle steering.
Active Steering varies the steering angle of the
wheels in relation to the steering wheel move‐
ment as a function of the speed.Seite 114ControlsDriving stability control systems114
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Driving comfortVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
Active Cruise Control with
Stop & Go function, ACC
The concept
This system can be used to select a desired
speed that the vehicle will maintain automati‐
cally on clear roads.
To the extent possible, the system automatically
adjusts the speed to a slower vehicle ahead of
you.
The distance that the vehicle maintains to the
vehicle ahead of you can be varied.
For safety reasons, it depends on the speed.
To maintain a certain distance, the system au‐
tomatically decelerates, applies the brakes
lightly, or accelerates again if the vehicle ahead
begins moving faster.
If the vehicle ahead of you brakes to a halt, the
system is able to detect this within the given
system limits. If the vehicle ahead of your drives
away again from a halt, your vehicle is able to
accelerate if operated accordingly.
Even if some time passes before the vehicle
drives away again, the BMW can still be accel‐
erated automatically and simply.
As soon as the road is clear, it accelerates to the
desired speed.
The speed is also maintained on downhill gra‐
dients, but may not be maintained on uphill
slopes if engine power is insufficient.General information
When ECO PRO is activated, cruise control is
also set to a driving style that saves on fuel con‐
sumption.
Notes Personal responsibility
The system does not relieve the driver of
the responsibility to adapt his or her speed, dis‐
tance and driving style to the traffic conditions.
You should drive attentively and intervene ac‐
tively when necessary, e.g. by braking or making
an evasive maneuver, otherwise, there is danger
of an accident.◀
At a glance
Buttons on the steering wheel1System on/off, interrupt2Resume speed3Store speed4Reduce distance5Store, maintain/change speed6Increase distanceSeite 119Driving comfortControls119
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Radar sensor
A dirty or covered sensor may hinder the detec‐
tion of vehicles.
▷If necessary, clean the radar sensor. Re‐
move layers of snow and ice carefully.▷Do not cover the view field of the radar sen‐
sor.
Switching on/off and interrupting
cruise control
Switching on Press the button on the steering wheel.
The indicator lamps in the instrument cluster
light up and the mark in the speedometer is set
to the current speed.
Cruise control can be used.
Switching off Deactivated or interrupted system
If the system is deactivated or interrupted,
actively intervene by braking and, if necessary,
with evasive maneuvers; otherwise, there is the
danger of an accident occurring.◀
If switching off the system while stationary,
press on the brake pedal at the same time.
Press the button.
▷If active: press twice.▷If interrupted: press once.The displays go out. The stored desired speed
and distance are deleted.
Interrupting the system When active, press the button.
If interrupting the system while stationary, press
on the brake pedal at the same time.
The system is automatically interrupted in the
following situations:▷When the brakes are applied.▷When the clutch pedal is depressed.▷When transmission position D is disen‐
gaged.▷When DTC Dynamic Traction Control is ac‐
tivated or DSC is deactivated.▷When DSC is actively controlling stability.▷If the safety belt and the driver's door are
opened when the vehicle is standing still.▷If the system has not detected objects for an
extended period, e.g., on a road with very lit‐
tle traffic without road edge line markings.▷If the radar sensor is dirty.
Maintaining/storing the speed
Press the button.
Or:
Press the rocker switch while the system is in‐
terrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
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It is displayed in the speedometer and briefly
displayed in the instrument cluster, Displays in
the instrument cluster, refer to page 122.
When cruise control is maintained or stored,
DSC Dynamic Stability Control is switched on, if
necessary.
Changing, maintaining, and storing the
speed
The rocker switch can be pressed while the sys‐
tem is interrupted to maintain and store the cur‐
rent speed. DSC Dynamic Stability Control is
switched on, if necessary.
Adapting the desired speed
Adapt the desired speed to the road con‐
ditions and be ready to brake at all times; other‐
wise, there is the danger of an accident occur‐
ring.◀
Speed differences
Large differences in speed relative to ve‐
hicles ahead of the vehicle cannot be compen‐
sated by the system for example in the following
situations:▷When catching up rapidly with a truck.▷When another vehicle suddenly swerves
into the wrong lane.◀
Press the rocker switch up or down repeatedly
until the desired speed is set.
If active, the displayed speed is stored and the
vehicle reaches the stored speed if the road is
clear.
▷Each time the rocker switch is pressed to the
point of resistance, the desired speed in‐creases or decreases by approx.
1 mph/1 km/h.▷Each time the rocker switch is pressed past
the point of resistance, the desired speed
increases or decreases by a maximum of
5 mph/10 km/h. Max. adjustable speed:
110 mph/180 km/h.
Hold the rocker switch in position to repeat the
action.
Distance Selecting a distance
Adjust the distance according to the traffic
and weather conditions; otherwise, there is the
danger of an accident occurring. Maintain the
prescribed safety distance.◀
Reduce distance Press the button repeatedly until the
desired distance is set.
The selected distance, refer to page 122, is dis‐
played in the instrument cluster.
Increase distance Press the button repeatedly until the
desired distance is set.
The selected distance, refer to page 122, is dis‐
played in the instrument cluster.
Calling up the desired speed and
distance
While driving Press the button with the system
switched on.
In the following cases, the stored speed value is
deleted and cannot be called up again:
▷When the system is switched off.▷When the ignition is switched off.Seite 121Driving comfortControls121
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While standingBefore leaving the vehicle, secure it
against rolling.
Before leaving the vehicle with the engine run‐
ning, engage position P of the automatic trans‐
mission and apply the parking brake. Otherwise,
the vehicle may begin to roll.◀
The system brought the vehicle to a complete
standstill.▷Green mark in the speedometer during a
brief idle phase:
The vehicle ahead of you drives away while
the mark is green: your vehicle accelerates
without anything having to be done.▷Switch to orange of the mark in the speed‐
ometer after approx. 2 sec.:
The vehicle ahead of you drives away, while
the mark is orange: in order to accelerate,
briefly press the gas pedal or press the RES
button or SET button.
Rolling bars in the distance indicator mean that
the vehicle ahead of you has driven off.
You actively braked your vehicle to a halt by
pressing on the brake pedal and it is standing
behind another vehicle:
1. Press the button to call up a stored
desired speed.2.Release the brake pedal.3.Press on the accelerator briefly, or press the
RES button or the rocker switch when the
vehicle ahead of you drives away.
Displays in the instrument cluster
Desired speed
▷The marking lights up green:
the system is active.▷The marking lights up or‐
ange: the system has been
interrupted.▷The marking does not light up: the system is
switched off.
With instrument display: the symbol is
displayed in the speedometer similarly
to the mark for the desired speed.
Brief status display Selected desired speed.
If --- appears briefly on the display for Check
Control messages, it is possible that the system
requirements for operation are currently not
met.
Distance to vehicle ahead of you
The selected distance to the vehicle driving
ahead of you is shown.
Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set after the system is
switched on.The system has been interrupted or
distance control is deactivated be‐
cause the accelerator is being
pressed; a vehicle was not detected.Distance control is deactivated be‐
cause the accelerator is being
pressed; a vehicle was detected.Rolling bars: the detected vehicle has driven
away.Seite 122ControlsDriving comfort122
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