2012 BMW 5 SERIES brakes

▷Then press the brake pedal with normal
braking force.
Activating/deactivating the system
manually
Using the button
Press the button.
▷LED comes on: Auto Start Stop function is
deactivated.
The engine is started during an automatic
engine stop.
The engine can only be stopped or started
via the Start/Stop button.▷LED goes out: Auto Start Stop function is
activated.
Switching off the vehicle during an
automatic engine stop
During an automatic engine stop, the vehicle
can be switched off permanently, e.g., when
leaving it.
1.Press the Start/Stop button. The ignition is
switched off. The Automatic Engine Start/
Stop Function is deactivated.
Automatic transmission: the transmission
position P is engaged automatically.2.Set the parking brake.
Engine start as usual via Start-/Stop button.
Automatic deactivation
In certain situations, the Automatic Engine Start/
Stop Function is deactivated automatically for
safety reasons, such as when the driver is de‐
tected to be absent.
Malfunction
The automatic engine start/stop function no lon‐
ger switches of the engine automatically. A
Check Control message is displayed. It is pos‐
sible to continue driving. Have the system
checked.
Parking brake
The concept
The parking brake is primarily intended to pre‐
vent the vehicle from rolling while parked; it
brakes the rear wheels.
Setting
Pull the switch.
The LED lights up.
The indicator lamp lights up in red. The
parking brake is set.
Lower lamp: indicator lamp in Canadian
models
Set the parking brake and further secure
the vehicle as required
Set the parking brake firmly when parking; oth‐
erwise, the vehicle could roll. On steep upward
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and downward inclines, further secure the vehi‐
cle, for example, by turning the steering wheel in
the direction of the curb. ◀
While driving
Use while driving serves as an emergency brak‐
ing function:
Pull the switch and hold it. The vehicle brakes
hard while the button is being pulled.
The indicator lamp lights up in red, a sig‐
nal sounds and the brake lamps light up.
Lower lamp: indicator lamp in Canadian
models
If the vehicle is braked to a speed of approx.
2 mph/3 km/h, the parking brake remains set.
Releasing
With the ignition switched on:
Manual transmission: Press the switch
while the brake or clutch is pressed.
Automatic transmission: Press the switch while
the brake is pressed or transmission position P
is engaged.
The LED and indicator lamp go out.
The parking brake is released.
Automatic Release in cars with
automatic transmission
For automatic release, operate the accelerator
pedal.
The LED and indicator lamp go out.
Subject to the following requirements, the park‐
ing brake is automatically released by operation
of the accelerator pedal:▷Engine on.▷Drive position engaged.▷Driver buckled in and doors closed.Inadvertent operation of the accelerator
pedal
Make sure that the accelerator pedal is not op‐
erated unintentionally; otherwise, the vehicle is
set in motion and there is a risk of an accident. ◀
Automatic Hold
The concept
This system assists the driver by automatically
setting and releasing the brake, such as when
moving in stop-and-go traffic.
The vehicle is automatically held in place when
it is stationary.
On inclines, the system prevents the vehicle
from rolling backward when driving away.
For your safety
Under the following conditions, Automatic Hold
is automatically deactivated and the parking
brake is set:
▷The engine is switched off.▷A door is opened and driver's safety belt is
unbuckled while the vehicle is stationary.▷The moving vehicle is brought to a standstill
using the parking brake.
The indicator lamp switches from green
to red and the letters AUTO H go out.
Lower lamp: indicator lamp in Canadian
models
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Active Protection
The concept
With Active Protection, critical driving situations
that might lead to an accident can be detected.
In in these situations, preventative protection
measures are automatically undertaken to min‐
imize the risk in the event of an accident as much
as possible.
Critical driving situations may include:▷Full application of the brakes.▷Severe understeering.▷Severe oversteering.
With Active Cruise Control with Stop & Go func‐
tion, impending collisions with vehicles driving
ahead or stopped in front of you can also be de‐
tected.
Personal responsibility
The system cannot serve as a substitute
for the driver's personal judgment of the traffic
situation. Adapt speed to traffic situation and
drive alertly; otherwise, a risk to safety may re‐
sult.◀
Function
After the safety belt is buckled and the door is
closed, the front belts are automatically tight‐
ened once after the vehicle is driven is away.
In critical driving situations, the following indi‐
vidual functions become active:
▷The front belts are automatically tightened.▷Automatic closing of the windows.▷Automatic closing of the glass sunroof.▷Automatic Positioning of the backrest for
the front passenger seat.
After a critical driving situation without an acci‐
dent, the front belts are loosened again. All other
systems can be restored to the desired setting.
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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 120.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 or when a trailer
is being used, 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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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 the brakes being applied,
the vehicle moves at slightly more than twice
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. twice 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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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.Buttons at a glance1System on/off, interrupt2Resume speed3Store speed4Reduce distance5Store, maintain/change speed6Increase 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 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.
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▷If active: press twice.▷If interrupted: press once.
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.
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.
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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 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.
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.◀
Depending on how the vehicle is equip‐
ped, the indicator lamp in the instrument
cluster indicates whether the system is
switched on.
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.
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