2012 BMW 640I CONVERTIBLE warning lights

Malfunctions
Steering wheel vibration
Frequent
activation of the steering wheel vibra‐
tion causes the system to overheat.
This causes the lane departure warning to be‐
come deactivated.
Let the system cool and reactivate it by pressing
the button.
Camera The camera is located on the front of the interior
rearview mirror.
Keep the area in front of the interior rearview
mirror clear.
Active Blind Spot Detection

*
The concept Two radar sensors below the rear bumper mon‐
itor the area behind and next to the vehicle at
speeds above approx. 30 mph/50 km/h.
The

system indicates whether there are vehicles
in the blind spot, arrow 1, or approaching from
behind on the adjacent lane, arrow 2. The lamp in the exterior mirror housing lights up
dimly.
Before you change lanes after setting the turn
signal,

the system issues a warning in the situa‐
tions described above.
The lamp in the housing of the exterior mirror
flashes and the steering wheel vibrates.
Switching on/off Press the button.
▷ On: the LED lights up.
▷ Off: the LED goes out.
The system can issue warnings at speeds above
approx. 30 mph/50 km/h.
The state is stored for the remote control cur‐
rently in use.
Display Information stage
The dimmed lamp in the mirror housing indi‐
cates when there are vehicles in the blind spot
or approaching from behind. Seite 98
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Safety

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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Controls At a glance

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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Controls At a glance

To increase vehicle stability, activate DSC again
as soon as possible.
Activating DSC OFF
Press and hold the button, but not lon‐
ger than approx. 10 seconds, until the
indicator lamp for the DSC lights up in the in‐
strument cluster and DSC OFF is displayed in
the tachometer.
The DSC system is switched off.
Deactivating DSC OFF
Press the button.
DSC OFF and the DSC indicator lamp
go out.
Indicator/warning lamps
When DSC OFF is activated, DSC OFF is dis‐
played in the tachometer.
The indicator lamp lights up: DSC OFF
is activated.
TRACTION
Maximum traction on loose road surfaces. DTC
Dynamic Traction Control is switched on. Driv‐
ing stability is limited during acceleration and
when driving in bends.
Activating TRACTION Press the button.
TRACTION
is displayed in the tachom‐
eter.
The DSC indicator lamp in the instrument clus‐
ter lights up.
Deactivating TRACTION
Press the button again.
TRACTION and the DSC indicator lamp
go out.
Indicator/warning lamps
When TRACTION is activated, TRACTION is
displayed in the tachometer. The indicator lamp lights up: TRACTION
is activated.
SPORT+
Sporty driving with optimized chassis and sus‐
pension during limited driving stabilization.
Dynamic Traction Control is switched on.
The driver handles several of the stabilization
tasks.
Activating SPORT+ Press the button repeatedly until
SPORT+ appears in the tachometer
and the DSC indicator lamp lights up in the in‐
strument cluster.
Indicator/warning lamps
SPORT+ is displayed in the instrument cluster.
The indicator lamp lights up: DTC Dy‐
namic Traction Control is activated.
SPORT
Consistently
sporty tuning of the suspension for
greater driving agility with maximum driving sta‐
bilization.
The program can be configured to individual
specifications.
The configuration is stored for the remote con‐
trol currently in use.
Activating SPORT
Press the button repeatedly until
SPORT appears in the tachometer.
Configuring SPORT
When the display is activated on the Control
Display, refer to page 105, the sport program
can be set to individual specifications.
After the sport program is activated, select
"Configure SPORT mode" on the displayed
panel and configure the program.
Optionally, the sport program can be configured
before it is activated: Seite 104
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Driving stability control systems

Measurement
Measurements
are made by ultrasound sensors
in the bumpers.
The range is approx. 6 ft/2 m.
An acoustic warning is first given:
▷ By the front* sensors and the two rear cor‐
ner sensors at approx. 24 in/60 cm.
▷ By the rear middle sensors at approx. 5 ft/
1.50 m.
System limits Check the traffic situation as well
PDC cannot serve as a substitute for the
driver's personal judgment of the traffic situa‐
tion.

Check the traffic situation around the vehi‐
cle with your own eyes. Otherwise, an accident
could result from road users or objects located
outside of the PDC detection range.
Loud noises from outside and inside the vehicle
may prevent you from hearing the PDC's signal
tone.◀
Avoid driving quickly with PDC
Avoid approaching an object quickly.
Avoid driving away quickly while PDC is not yet
active.
For technical reasons, the system may other‐
wise be too late in issuing a warning.◀
Limits of ultrasonic measurement
The detection of objects can reach the physical
limits of ultrasonic measurement, for instance:
▷ With tow bars and trailer hitches.
▷ With thin or wedge-shaped objects.
▷ With low objects.
▷ With objects with corners and sharp edges.
Low objects already displayed, e.g., curbs, can
move
into the blind area of the sensors before or
after a continuous tone sounds.
High, protruding objects such as ledges may not
be detected. False warnings
PDC may issue a warning under the following
conditions even though there is no obstacle
within the detection range:
▷
In heavy rain.
▷ When sensors are very dirty or covered in
ice.
▷ When sensors are covered in snow.
▷ On rough road surfaces.
▷ In large buildings with right angles and
smooth

walls, e.g., in underground garages.
▷ In heavy exhaust.
▷ Due to other ultrasound sources, e.g.,
sweeping machines, high pressure steam
cleaners or neon lights.
Switching on automatically
Select transmission position R with the engine
running.
Switching off automatically
The

system switches off and the LED goes out:
▷ After approx. 160 ft/50 m when driving for‐
ward.
▷ Above approx. 22 mph/36 km/h when driv‐
ing forward.
Switch on the system again if necessary.
Switching on/off manually Press the button.
▷ On: the LED lights up.
▷ Off: the LED goes out. Seite 108
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Driving comfort

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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Controls At a glance

Engine oil
General information
The
engine oil consumption is dependent on the
driving style and driving conditions.
Therefore, check the engine oil level after every
refueling using the electronic engine oil level
check.
Checking the oil level
The concept
The oil level is monitored electronically and dis‐
played on the Control Display.
Requirements
▷ The engine must be running and warm after
the vehicle has been driven for at least
6 miles/10 km.
▷ The vehicle is stopped or being driven on a
level roadway.
Displaying the oil level
1. "Vehicle Info"
2. "Vehicle status"
3. "Engine oil level" Possible messages
▷
"Engine oil level OK"
▷ "Measurement not possible at this time."
▷ "Measuring engine oil level..."
Duration with the engine running: ap‐
prox. 3 minutes. Duration while driving: approx. 5 minutes.
▷ "Engine oil level below minimum. Add 1
quart!"
Add oil within the next 125 miles/200 km.
▷ "Engine oil level too high! Have this
checked."
Have the vehicle checked immediately.
Too much engine oil
Have the vehicle checked immedi‐
ately; otherwise, surplus oil can lead to en‐
gine damage.

◀ ▷
"Measurement inactive. Have this
checked."
Note the newly calculated remaining mile‐
age until the next oil service. Have the sys‐
tem checked as soon as possible.
Adding engine oil
Filler neck When the indicator lights up in the instrument
cluster, add 1 US quart/liter of engine oil within
the next 125 miles/200 km.
Recommended oil types, refer to page
239.
Protect children
Keep oil, grease, etc., out of reach of chil‐
dren and heed the warnings on the containers
to prevent health risks.◀ Seite 238
238 Online Edition for Part no. 01 40 2 606 521 - 03 11 490Engine oil

Maintenance
BMW Maintenance System
The maintenance system directs you to re‐
quired
maintenance measures and thereby sup‐
ports you in maintaining road safety and the op‐
erational reliability of the vehicle.
Condition Based Service CBS
Sensors and special algorithms take into ac‐
count the driving conditions of your vehicle.
Based on this, Condition Based Service deter‐
mines the maintenance requirements.
The system makes it possible to adapt the
amount of maintenance you need to your user
profile.
Details on the service requirements, refer to
page 81, can be displayed on the Control Dis‐
play.
Service data in the remote control
Information on the required maintenance is con‐
tinuously stored in the remote control. Your
service center will read out this data and suggest
the right array of service procedures for your ve‐
hicle.
Therefore, hand your service specialist the re‐
mote control that you used most recently.
Storage periods
Storage periods during which the vehicle bat‐
tery was disconnected are not taken into ac‐
count.
If this occurs, have a service center update the
time-dependent maintenance procedures,
such as checking brake fluid and, if necessary,
changing the engine oil and the microfilter/acti‐
vated-charcoal filter. Service and Warranty
Information Booklet for US
models and Warranty and
Service Guide Booklet for
Canadian models
Please
consult your Service and Warranty Infor‐
mation Booklet for US models and Warranty and
Service Guide Booklet for Canadian models for
additional information on service requirements.
Maintenance and repair should be performed by
your service center. Make sure to have regular
maintenance procedures recorded in the vehi‐
cle's Service and Warranty Information Booklet
for US models, and in the Warranty and Service
Guide Booklet for Canadian models. These en‐
tries are proof of regular maintenance.
Socket for OBD Onboard
Diagnosis There is an OBD socket on the driver's side for
checking

the primary components in the vehicle
emissions.
Emissions
▷The warning lamp lights up:
Emissions are deteriorating. Have
the

vehicle checked as soon as pos‐
sible.
▷ The warning lamp flashes under cer‐
tain circumstances: Seite 241
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Mobility Communication Entertainment Navigation Driving tips Controls At a glance