navigation BMW 640I CONVERTIBLE 2012 Workshop Manual

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.
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The laws of physics cannot be repealed, even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.
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: Seite 101
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The rear wheels are turned to the same angle as
the front wheels.
In
critical situations, Integral Active Steering can
specifically steer the front and rear wheels to
stabilize the vehicle before the driver intervenes,
e.g., when braking where road conditions differ
on the left and right sides of the vehicle.
Initializing
In rare cases, it may become necessary to initi‐
alize the Integral Active Steering.
The warning lamp lights up. A Check
Control message is displayed.
1. With the engine running, turn the steering
wheel

all the way to the left and right several
times in a uniform manner until the warning
lamp disappears.
2. Have the system checked if the warning
lamp

does not go out after moving the steer‐
ing wheel approx. 6 times or if the steering
wheel is at an angle.
Using snow chains
Ensure
that the rear axle steering is deactivated
when using snow chains, refer to page 235.
Programs
The system offers two different programs.
The programs can be selected via Dynamic Driv‐
ing Control, refer to page 103.
SPORT
Consistently sporty tuning of the Integral Active
Steering for greater driving agility.
NORMAL
Balanced tuning of the Integral Active Steering
for optimal traveling comfort.
Malfunction
In the event of a malfunction, the steering wheel
must be turned further, while the vehicle re‐
sponds more sensitively to steering wheel
movements in the higher speed range. The stability-enhancing intervention may be de‐
activated.
Proceed cautiously and drive defensively.
Have the system checked.
Dynamic Driving Control*
The concept
Dynamic Driving Control can be used to adjust
the

driving dynamics of the vehicle. Several pro‐
grams are available for this purpose; they can be
activated using the two Dynamic Driving Control
buttons.
Operating the programs Press the button Program
DSC OFF
TRACTION
SPORT+
SPORT
NORMAL
COMFORT*
For Adaptive Drive* or Dynamic Damper Con‐
trol*, the lower button is labeled with COM‐
FORT.
Automatic program change
The

system automatically switches to NORMAL
in the following situations:
▷ Failure of Integral Active Steering*.
▷ Failure of Dynamic Damping Control*.
▷ The vehicle has a flat tire.
DSC OFF
Driving stability is limited during acceleration
and when driving in bends.
Stabilizing interventions by the

Integral Active
Steering* system are only performed by the rear
axle steering.
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1.
"Settings"
2. "SPORT mode" 3.
Configure the program.
This configuration is retrieved when the sport
program is activated.
NORMAL
For
a balanced tuning with maximum driving sta‐
bilization.
Activating NORMAL
Press the button repeatedly until the
program display in the tachometer
goes out.
In certain situations, the system automatically
changes to the NORMAL program, automatic
program change, refer to page 103.
COMFORT*
Comfort-oriented tuning of the shock absorbers
for optimal traveling comfort with maximum
driving stabilization.
Activating COMFORT Press the button repeatedly until COM‐
FORT appears in the tachometer.
Displays in the instrument cluster
Selected program The selected program is dis‐
played in the tachometer. Program selection
Pressing the button displays a list of the select‐
able programs.
Display on the Control Display
Program changes can be displayed briefly on
the Control Display.
To do so, make the following settings:
1.
"Settings"
2. "Control display"
3. "Display driving settings" Seite 105
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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.
Resuming the desired speed Press the button.
The stored speed is reached and maintained. Displays in the instrument cluster
1
Display of desired speed
2 Indicator lamp
3 Brief status display
Desired speed
Display 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
Brief display in the speedometer: Selected desired speed
If --- appears briefly, conditions may not be ad‐
equate to operate the system.
PDC Park Distance Control*
The concept
In

addition to the PDC Park Distance Control, the
backup camera*, refer to page 110, can be
switched on.
PDC supports you when parking. Objects that
you are approaching slowly in front of or behind
your vehicle are indicated with:
▷ Signal tones.
▷ Visual display. Seite 107
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Signal tones
When approaching an object, an intermittent
tone
is sounded that indicates the position of the
object. For example, if an object is detected to
the left rear of the vehicle, a signal tone sounds
from the left rear speaker.
The shorter the distance to the object becomes,
the shorter the intervals.
If the distance to a detected object is less than
approx. 12 in/30 cm, a continuous tone is
sounded.
If objects are located both in front of and behind
the vehicle, an alternating continuous signal is
sounded.
The intermittent tone is interrupted after approx.
3 seconds:
▷ If the vehicle stops in front of an object that
is detected by only one of the corner sen‐
sors.
▷ If moving parallel to a wall.
The signal tone is switched off:
▷ When the vehicle moves away from an ob‐
ject by more than approx. 4 in/10 cm.
▷ When transmission position P is engaged.
Volume
You can set the volume of the PDC signal tone,
refer to page 165.
The

setting is stored for the remote control cur‐
rently in use.
Visual warning
The approach of the vehicle to an object can be
shown on the Control Display. Objects that are
farther away are displayed on the Control Dis‐
play before a signal tone sounds.
A display appears as soon as Park Distance
Control (PDC) is activated.
If the backup camera image was selected last, it
again appears on the display. To switch to PDC:
1. "Rear view camera" Select the symbol
on the Control Display.
2. Press the controller. The setting is stored for the remote control cur‐
rently in use.
Zoom view*
On

the left part of the display screen, the vehicle
is shown enlarged. ▷
Forward gear or transmission position D en‐
gaged: front area of the vehicle.
▷ Reverse gear or transmission position R en‐
gaged: rear area of the vehicle.
Display on the Control Display
Switching
on the backup camera via the
iDrive
With PDC activated: "Rear view camera"
The
backup camera image is displayed. The set‐
ting is stored for the remote control currently in
use.
Malfunction
A Check Control message is displayed. On the Control Display, the areas in front of and
behind the vehicle are shaded. PDC has failed.
Have the system checked.
To ensure full operability:
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▷
Help you to estimate the space required
when parking and maneuvering on level
roads.
▷ Are dependent on the current steering angle
and are continuously adjusted to the steer‐
ing wheel movements.
Show the parking aid lines, refer to page 111.
Turning circle lines ▷
Can be shown in the backup camera image.
▷ Show the course of the smallest possible
turning circle on a level road.
▷ Only one turning circle line is displayed
when the steering wheel is turned.
Show the parking aid lines, refer to page 111.
Parking using pathway and turning
circle lines
1. Position the vehicle so that the turning circle
lines lead to within the limits of the parking
space. 2.
Turn the steering wheel to the point where
the pathway line covers the corresponding
turning circle line. Obstacle marking
▷
Spatially-shaped markings can be shown in
the backup camera image.
Their colored steps match the markings of the
PDC. This simplifies estimation of the distance
to the object shown.
Activating the assistance functions
More
than one assistance function can be active
at the same time.
Showing the parking aid lines "Parking aid lines"
Pathway and turning circle lines are displayed.
Showing the obstacle marking "Obstacle marking"
Spatially-shaped markings are displayed.
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Switching on/off manually
Press the button.
▷ On: the LED lights up.
▷ Off: the LED goes out.
If Top View is displayed, switch on the backup
camera via the iDrive, refer to page 113.
Visual warning
The
approach of the vehicle to an object can be
shown on the Control Display.
When the distance to an object is small, a red bar
is shown in front of the vehicle, as it is in the PDC
display. The display appears as soon as Top View is ac‐
tivated.
If

the backup camera image was selected last, it
again appears on the display. To switch to Top
View: "Rear view camera" Select the symbol on
the Control Display.
The

setting is stored for the remote control cur‐
rently in use. Display on the Control Display
Switching on the backup camera via
iDrive
With Top View switched on:
"Rear view camera"
The
backup camera image is displayed. The set‐
ting is stored for the remote control currently in
use.
Brightness
With Top View switched on:
1. "Brightness"
2. Turn the controller until the desired setting
is reached and press the controller.
Contrast
With Top View switched on:
1. "Contrast"
2. Turn the controller until the desired setting
is reached and press the controller.
Displaying the turning circle and
pathway lines
▷ The static, red turning circle line shows the
space needed to the side of the vehicle
when the steering wheel is turned all the
way.
▷ The variable, green pathway line assists you
in assessing the amount of space actually
needed to the side of the vehicle.
The pathway line is dependent on the cur‐
rent steering angle and is continuously ad‐
justed with the steering wheel movement. "Parking aid lines"
Turning circle and pathway lines are displayed.
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Cameras
The two camera lenses are located on the sides
of the bumper.
The image quality may be impaired by dirt.
Clean the lens, refer to page
257.
Parking assistant
*
The concept This system assists the driver in parking parallel
to the road.
Ultrasound

sensors measure parking spaces on
both sides of the vehicle.
The parking assistant calculates the best pos‐
sible parking line and takes control of steering
during the parking procedure.
When parking, also take note of the visual and
acoustic information issued by the PDC and the
parking assistant and accelerate or brake ac‐
cordingly.
A component of the parking assistant is the PDC
Park Distance Control*, refer to page 107.Personal responsibility
The

parking assistant does not relieve the
driver of responsibility for the vehicle during the
parking procedure.
Watch the parking space and parking procedure
closely and intervene if necessary; otherwise,
there is the danger of an accident.◀
Requirements
For measuring parking spaces
▷ Maximum speed while driving forward ap‐
prox. 22 mph/35 km/h.
▷ Maximum distance to row of parked vehi‐
cles: 5 ft/1.5 m.
Suitable parking space
▷ Gap between two objects with a minimum
length of approx. 5 ft/1.5 m.
▷ Minimum length: own vehicle length plus
approx. 4 ft/1.2 m.
▷ Minimum depth: approx. 5 ft/1.5 m.
For parking procedure
Closed doors.
Switching on
Using the button Press the button.
The LED lights up.
The parking assistant is activated automati‐
cally.
The current status of the parking space search
is indicated on the Control Display. Seite 115
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Notes
▷
The parking assistant takes control of steer‐
ing
for as long as the symbol for active park‐
ing appears on the display.
▷ The system maneuvers the vehicle to posi‐
tion

it properly in smaller parking spaces, for
example.
▷ To achieve the best possible parking posi‐
tion, wait for the automatic steering wheel
movement after the gear change when the
vehicle is stationary.
▷ When parking in parking spaces on the driv‐
er's

side, the corresponding turn signal must
be set.
Interrupting manually
The parking assistant can be interrupted at any
time by:
▷ Grasping the steering wheel and steering
yourself.
▷ "Deactivate Parking Assistant" Select
the symbol on the Control Display.
Interrupting automatically
The procedure is interrupted automatically:
▷ If the vehicle speed exceeds approx. 6 mph/
10 km/h.
▷ On snow-covered or slippery road surfaces
if necessary.
▷ If doors are open.
A Check Control message is displayed.
Continuing
An interrupted parking procedure can be con‐
tinued if necessary.
Follow

the instructions on the Control Display to
do this.
Switching off
The system can be deactivated as follows:
▷ Press the button. ▷
Switch off the ignition. Malfunction
A Check Control message is displayed.
The parking assistant failed. Have the system
checked.
System limits
Changes to the parking space
Changes to the parking space after it was
measured

are not taken into account by the sys‐
tem.
Therefore, always be alert and ready to inter‐
vene; otherwise, there is the danger of an acci‐
dent occurring.◀
Transporting loads
Loads that extend beyond the perimeter
of the vehicle are not taken into account by the
system during the parking procedure.
Therefore, always be alert and ready to inter‐
vene; otherwise, there is the danger of an acci‐
dent occurring.◀
Curbs
The parking assistant may steer the vehi‐
cle over or onto curbs.
Therefore, always be alert and ready to inter‐
vene; otherwise, the wheels, tires, or the vehicle
may become damaged.◀
No parking assistance
The parking assistant does not provide assis‐
tance in parking.
▷ In tight curves.
Functional limitations
The system may not be fully functional in the
following situations:
▷ When sensors are dirty or iced over.
▷ In heavy fog, rain or snowfall.
▷ On bumpy road surfaces such as gravel
roads.
▷ When leaves or snow has collected in the
parking space. Seite 117
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Pedestrian detection
The pedestrian detection and warning system
only
operates in darkness and only when a heat
image is displayed.
Warm objects that are similar in shape to human
beings are detected by the system.
People detected by the system are displayed
with a slight yellow hue.
Under good ambient conditions, the pedestrian
detection system operates within a range of ap‐
prox. 50 ft/15 m to approx. 330 ft/100 m. Environmental influences can limit the availabil‐
ity of pedestrian detection.
If

pedestrian detection is not available, a symbol
is displayed in the heat image.
This symbol disappears when the function be‐
comes available again. Warning of people in danger If the system detects a person in the defined
area

in front of the vehicle and if there is the dan‐
ger of a collision with this person, a warning
symbol appears in the Control Display and
Head-up Display*.
Although both the shape and the heat radiation
are analyzed, false warnings cannot be ruled out.
Warning area in front of the vehicle The warning area in front of the vehicle is divided
into two areas.
▷
Central area 1 directly in front of the vehicle.
▷ Expanded area 2 to the right and left.
The entire area moves along with the vehicle in
the direction of the steering angle and changes
with

the vehicle speed. As the vehicle speed in‐
creases, the area becomes longer and wider, for
example.
Symbols
This symbol is displayed when a person
is detected in the central area, arrow 1,
immediately in front of the vehicle.
This symbol is displayed when a person
detected in the extended area, arrow 2, Seite 119
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