brake BMW 5 SERIES 2011 User Guide

Driving stability control 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 108.
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The laws of physics cannot be repealed, even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.◀
Indicator/warning lamps
The 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. Seite 95
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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 lights up in the instru‐
ment cluster and DSC OFF is displayed.
The DSC system is switched off.
Activating DSC
Press the button.
DSC OFF and the DSC 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
When dynamic traction control (DTC) is acti‐
vated, there is maximum traction on loose road
surfaces.The TRACTION* program is acti‐
vated.The driving stability is limited during ac‐
celeration and during cornering.
Activating DTC
Press the button.
TRACTION is displayed in the instru‐
ment cluster and the indicator lamp for DSC
lights up.
Deactivating DTC
Press the button again.
TRACTION
and the DSC indicator lamp
go out.
Indicator/warning lamps
When DTC is activated, TRACTION is displayed
in the tachometer.
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 requiring brake applica‐
tion, the vehicle moves at slightly more than
twice walking speed. Seite 96
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Driving stability control systems
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You can activate the Hill Descent Control at
speeds below approx. 22 mph/35 km/h. When
driving downhill, the vehicle reduces its speed
to approx. twice walking speed and then keeps
its speed constant.
While you are actively braking, the system is on
standby.
The system does not brake the vehicle
during this time.
Increasing or decreasing vehicle speed
You can specify your 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. You can change
the vehicle speed by pressing on the accelerator
lightly. ▷
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.
Display in the instrument cluster
The 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 98
▷ Dynamic Damping Control, refer to
page 98
The system increases driving stability and driv‐
ing comfort. Seite 97
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Driving comfort
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. Buttons at a glance 1
System on/off, interrupt
2 Resume speed
3 Store speed*
4 Reduce distance
5 Store, maintain/change speed
6 Increase distance
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 marking 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. Seite 102
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The displays go out. The stored desired speed
and distance are deleted.
Interrupting
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 if:
▷ The brakes are applied.
▷ The clutch pedal is depressed.
▷ Transmission position D is disengaged.
▷ DTC Dynamic Traction Control is activated
or DSC is deactivated.
▷ DSC is actively controlling stability.
▷ The safety belt and the driver's door are
opened when the vehicle is standing.
▷ 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.
▷ Radar sensor is soiled.
Maintaining/storing the speed Press the button*.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
It is displayed in the speedometer and briefly
displayed in the instrument cluster, Displays in
the instrument cluster, refer to page 104.
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
Great speed differences with vehicles
driving ahead of you, e.g., when rapidly ap‐
proaching a truck or when another vehicle
swerves into your own lane, cannot be compen‐
sated for by the system.◀ 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.◀ Seite 103
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Reduce distance
Press the button repeatedly until the
desired distance is set.
The
selected distance, refer to page 105, 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 105, 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.
While standing Before 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 accelerator 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 1
Display of desired speed
2 Distance to vehicle ahead of you
3 Vehicle symbol
4 Brief status display
Desired speed
Marking in the speedometer ▷The marking lights up in
green: the system is active.
▷ The marking lights up in or‐
ange: the system has been
interrupted.
▷ The marking does not light up: the system is
switched off.
Brief status display Selected desired speed.
If --- appears briefly on the display for Check
Control
messages, it is possible that the system Seite 104
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Driving comfort
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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 display
Distance 1
Distance 2
Distance 3
Distance 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. Indicator/warning lamps
Personal responsibility
The indicator and warning lamps do not
relieve the driver of the responsibility to adapt
his
or her desired driving speed and style to the
traffic conditions.◀
The vehicle symbol lights up in orange:
A vehicle has been detected ahead of
you.
The vehicle symbol flashes orange:
The conditions are not adequate for op‐
erating the system. The system was deactivated but applies the
brakes until you actively assume control by
pressing on the brake pedal or accelerator.
The vehicle symbol flashes red and an
acoustic signal sounds:
You

are requested to intervene by brak‐
ing or making an evasive maneuver.
System limits
Speed range
Best results are achieved when using the sys‐
tem on well-developed roads and highways.
The desired speed can be selected between
20 mph/30 km/h to 110 mph/180 km/h.
The system can also be activated when station‐
ary.
Comply with the legal speed limit in every situa‐
tion when using the system.
Detection range The detection capacity of the system and the
automatic braking capacity are limited.
Two-wheeled vehicles driving ahead of you
for instance might not be detected.
Limited detection capacity
Because of the limits to the detection ca‐
pacity,

you should be alert at all times so that you
can intervene actively, if necessary; otherwise,
there is the danger of an accident occurring.◀
Deceleration
The system does not decelerate when a sta‐
tionary obstacle is located in the same lane, e.g., Seite 105
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Collision warning with
braking function*
The concept
The system issues a two-phase warning of a
danger of collision at speeds above approx.
10 mph/15 km/h.
The collision warning is available even if cruise
control has been deactivated.
It responds to stationary or moving objects that
are within the detection range of the radar sys‐
tem.
When the vehicle is intentionally brought into
contact with an object, the collision warning is
delayed to avoid false warnings.
Warning stages
Prewarning
This
warning is issued, for example, when there
is the impending danger of a collision or the dis‐
tance to the vehicle ahead is too small.
Acute warning with braking function
Warning of the imminent danger of a collision
when the vehicle approaches another object at
a relatively high differential speed.
The acute warning prompts the driver to inter‐
vene and, if there is the danger of a collision, is
accompanied by a braking intervention.
The braking intervention is executed with lim‐
ited braking force and for a brief period only. The
intervention cannot bring the vehicle to a com‐
plete standstill. The braking intervention is executed only if DSC
Dynamic Stability Control, refer to page
95, is
switched on.
Adapting your speed and driving style
The acute warning does not relieve the
driver of the responsibility to adapt his or her
driving speed and style to the traffic condi‐
tions.◀
The braking intervention can be interrupted by
pressing on the accelerator or by actively mov‐
ing the steering wheel.
When

towing or tow-starting the vehicle, switch
off the collision warning with braking function to
prevent undesired interventions.
The braking function is deactivated if the DSC
Dynamic Stability Control or DTC Dynamic
Traction Control is deactivated.
Switching the warning function on/off Press the button
▷ On: the LED lights up.
▷ Off: the LED goes out.
The state is stored for the remote control cur‐
rently in use.
Configuring the prewarning
After the warning function is switched on, the
following can be set via the iDrive:
▷ The prewarning can be switched on/off.
▷ The time of the prewarning can be set.
These settings have no effect on the time of the
warning from the Active Cruise Control* that
prompts the driver to intervene or brake. Seite 108
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Display
The collision warning can be issued in the in‐
strument cluster, in the Head-up Display*, and
acoustically.
Instrument cluster
The vehicle lights up in red: prewarning
The vehicle flashes red and an acoustic
signal sounds: acute warning
You
are requested to intervene by brak‐
ing or making an evasive maneuver.
Adapting your speed and driving style
The display does not relieve the driver of
the responsibility to adapt his or her driving
speed and style to the traffic conditions.◀
System limits
Be alert
Due to system limitations, warnings may
be not be issued at all, or may be issued late or
improperly. Therefore, always be alert and ready
to intervene; otherwise, there is the danger of an
accident occurring.◀
Detection range
The detection capacity of the radar sensor and
the collision warning has limitations.
This may result in the warning not being issued
or being issued late.
For example, the following situations may not be
detected:
▷ Slow moving objects when you approach
them at high speed.
▷ Vehicles that suddenly swerve in front of
your vehicle.
▷ Two-wheeled vehicles ahead of you.
▷ Pedestrians.
Functional limitations
The system may not be fully functional in the
following situations: ▷
In heavy fog, rain or snowfall.
▷ In tight curves.
▷ If the radar sensor is dirty or covered.
Prewarning sensitivity
If the prewarning setting is too sensitive, there
may be an excess of false warnings.
Cruise control
The concept
The

system is functional at speeds beginning at
approx. 20 mph/30 km/h.
It maintains the speed that was set using the
control elements on the steering wheel.
The system brakes on downhill gradients if en‐
gine braking action is insufficient.
Unfavorable conditions
Do not use the system if unfavorable con‐
ditions make it impossible to drive at a constant
speed, for instance:
▷ On curvy roads.
▷ In heavy traffic.
▷ On slippery roads, in fog, snow or rain, or on
a loose road surface.
Otherwise, you could lose control of the vehicle
and cause an accident.◀
Controls
Buttons at a glance 1
System on/off, interrupt
2 Resume speed Seite 109
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3
Store speed*
4 Store, maintain/change speed
Switching on Press the button on the steering wheel.
The marking 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.◀
Press the button.
▷ If active: press twice.
▷ If interrupted: press once.
The displays go out. The stored desired speed
is deleted.
Interrupting When active, press the button.
The system is automatically interrupted if:
▷ The brakes are applied.
▷ The clutch pedal is depressed.
▷ Transmission position D is disengaged.
▷ DTC Dynamic Traction Control is activated
or DSC is deactivated.
▷ DSC is actively controlling stability.
▷ HDC is activated.
Maintaining/storing the current speed Press the button.
When the system is switched on, the current
speed is maintained and stored as the desired
speed. It is displayed in the speedometer and briefly
displayed in the instrument cluster, Displays in
the speedometer, refer to page
111.
When cruise control is maintained or stored,
DSC

Dynamic Stability Control is switched on, if
necessary.
Change, maintain speed
The rocker switch can be pressed while inter‐
rupted to maintain and store the current speed.
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.◀ 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.
▷ Pressing the rocker switch to the resistance
point and holding it accelerates or deceler‐
ates the vehicle without requiring pressure
on

the accelerator. After the rocker switch is
released, the vehicle maintains its final
speed. Pressing the switch beyond the re‐
sistance point causes the vehicle to accel‐
erate more rapidly. Seite 110
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