Driving
60
Radio readiness and ignition switched
off
All indicator and warning lamps in the instru-
ment cluster go out.
Starting engine
Do not run the engine in closed rooms,
otherwise the inhalation of toxic exhaust
gases can cause unconsciousness and death.
The exhaust gases contain carbon monoxide,
an odorless and colorless, but highly toxic gas.
Never leave an unattended vehicle with the
engine running, as such a vehicle represents a
potential safety hazard.
Before leaving the vehicle with the engine run-
ning, select the idling position, or move the
selector lever to position P and apply the hand-
brake, otherwise the vehicle can begin to roll.<
When starting the engine, do not press the
accelerator pedal.
Do not allow the engine to warm up by leaving it
running while the vehicle remains stationary.
Instead, begin to drive at a moderate engine
speed.
Do not press either the brake or the clutch
pedal as long as you do not want to start
the engine. The engine starts when you briefly
press the Start/Stop button and press the brake
pedal with an automatic transmission
* or the
clutch pedal with a manual transmission.<
Manual transmission
1.Apply the handbrake.
2.Depress the clutch pedal and select the
idling position.
3.Briefly press the Start/Stop button.
The system responds by automatically engag-
ing the starter for a certain period and automat-
ically disengaging it as soon as the engine
starts.
Automatic transmission*
1.Depress brake pedal.
2.Place selector lever in position P or N.
3.Briefly press the Start/Stop button.
The system responds by automatically engag-
ing the starter for a certain period and automat-
ically disengaging it as soon as the engine
starts.
SMG Sequential Manual
Transmission*
1.Depress brake pedal.
2.Engage selector lever position N and make
sure that this position is also indicated in the
instrument cluster.
3.Briefly press the Start/Stop button.
The system responds by automatically engag-
ing the starter for a certain period and automat-
ically disengaging it as soon as the engine
starts.
If the engine fails to start, depress the
brake pedal and press the selector lever
to the right then engage position N. Watch the
display in the instrument cluster while doing
so.<
Special starting conditions
Depress the accelerator pedal half way when
starting the engine in the following situations:
>The engine fails to start on the first attempt,
e.g. if it is very hot or cold.
>The engine is started at very low tempera-
tures, below approx. + 57/– 156, at high
altitudes, over approx. 3,300 ft/1,000 m.
Controls
69Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Displays in instrument cluster
1Stored desired speed
2Selected desired speed appears briefly
Active cruise control*
The concept
With active cruise control, you can select a
desired speed which is not only automatically
maintained when driving on open roadways, but
also varied to maintain a selected distance set-
ting as slower traffic is encountered.
Active cruise control is a technological advance
over the familiar cruise control and is a welcome
relief from the constant adjustment of speed
that can accompany driving in traffic on free-
ways or other high-speed thoroughfares. Espe-
cially on longer trips, the system can reduce
fatigue and tension, while increasing your
enjoyment of driving. Please use it safely and
responsibly.
In addition to holding a steady cruising speed,
if you encounter slower vehicles ahead, active
cruise control will, within the scope of given
possibilities, adjust your vehicle's speed auto-
matically so that you can flow with the traffic
without having to make constant adjustments.
If, for example, while cruising at the selected
speed, you begin to approach a slower vehicle
ahead of you in the same lane, the system will
reduce your vehicle's speed to the same as that
of the vehicle ahead to maintain your selected
distance setting between your vehicle and the
vehicle ahead. You can vary the distance, which
is additionally speed-dependent. Based on
your selected distance setting, the system
automatically decreases the throttle setting and lightly applies the brakes if necessary. The vehi-
cle brake lamps will automatically illuminate to
signal a following driver to take action. In addi-
tion, it may be necessary for the vehicle or the
driver to downshift, depending on the kind of
transmission your vehicle is equipped with, to
maintain the distance setting selected. If the
vehicle ahead speeds up or when the lane
ahead becomes clear, your vehicle will acceler-
ate to the speed you have selected by increas-
ing the throttle setting and shifting gears auto-
matically or by the driver as needed. Your
selected speed will also be held when driving
downhill, however it can be dropped below
when driving uphill if the engine output is insuf-
ficient.
The minimum desired speed is 20 mph or
30 km/h, and the maximum desired speed
110 mph or 180 km/h.
Active cruise control is not and must not
be used as a collision avoidance/warning
system.<
Since this active cruise control system is
a new technology and operates differ-
ently from conventional cruise control systems
which you may be accustomed to, you are
strongly urged to read all of the pages relating
to this system before use. Pay special attention
to the information contained in the Things to
know about active cruise control section begin-
ning on page73.<
Professional* navigation system
If a navigation DVD is in the drive, refer to
page134, the system adjusts the accelerating
and braking behavior of the vehicle to the road
you are driving on.
To ensure that the system is informed of
the current course of the road, always use
the latest navigation DVD if possible.<
When the vehicle position is unknown, e.g.
when you leave the map area, this influence of
the navigation system is not available.
Driving
72
Displays in instrument cluster
1Stored desired speed
2Lights up yellow: vehicle driving ahead is
detected
Flashes red, a signal sounds: the system
cannot establish the distance, apply the
brakes yourself
Flashes yellow: driving stability control sys-
tems intervene, the active cruise control is
deactivated
3Selected distance to vehicle driving ahead:
lights up as soon as the system is activated
4Selected desired speed appears briefly
If the display ACC --- mph/km/h briefly
appears in the instrument cluster, it might
be that conditions necessary for operation are
not currently being met. To call up Check Con-
trol messages, refer to page80.<
Warning lamps
The display2 flashes red and a sig-
nal sounds.
The system requests that you
intervene by braking or with an
evasive maneuver. The active
cruise control cannot automatically restore the
distance to the vehicle driving ahead.
However, this display cannot relieve the driver
of the responsibility for adjusting the desired
speed and driving style to the traffic conditions.
The display2 flashes yellow.
Automatic intervention by ABS or
DSC. The active cruise control
intervenes by braking until you
take over actively.
Radar sensor
Heavy rain, dirt, snow or ice can restrict the
detection of vehicles driving ahead. If neces-
sary, clean the front radar sensor under the
bumper. Exercise particular care when remov-
ing snow and ice.
If the sensor is not aligned properly, the active
cruise control cannot be activated.
Controls
73Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Things to know about active cruise control
As with conventional cruise control sys-
tems, active cruise control in no way
diminishes or substitutes for the driver's own
personal responsibility, alertness and aware-
ness in adjusting speed, braking or otherwise
controlling the vehicle. The driver should
decide when to use the system on the basis of
road, traffic, visibility, and weather conditions.
Active cruise control is intended for use on
highway-type roadways where traffic is moving
relatively smoothly. Do not use this system in
city driving; heavy traffic such as during rush
hour; on curvy, winding roads, slippery roads or
roads with sharp curves such as highway off-
ramps; during inclement weather such as snow,
strong rain or fog; or when entering inter-
changes, service/parking areas or toll booths.
It is also important to regulate your vehicle's
speed and distance setting within applicable
legal limits. Always be ready to take action or
apply the brakes if necessary, especially when
the system is actively following a vehicle in front
of you.<
Always remember that the range and abil-
ity of the system does have physical limi-
tations. It will not apply the brakes or decelerate
your vehicle when there is a slow-moving vehi-
cle, stopped vehicle or stationary object ahead
of you, as for example, at a traffic light or a
parked vehicle. Also, the system does not react
to oncoming traffic, pedestrians or other types
of potential traffic such as a rider on horseback.
It is also possible that the system may not
detect smaller moving objects such as motor-
cycles or bicycles. Be especially alert when
encountering any of these situations as the sys-
tem will neither automatically brake, nor provide
a warning to you. Also, be aware that every decrease in the distance setting allows your
vehicle to come closer to a vehicle in front of
you and requires a heightened amount of alert-
ness.<
If while your vehicle is actively following a vehi-
cle in front of you and the vehicle ahead speeds
up or the lane ahead becomes clear, then your
vehicle will accelerate to the speed you have
selected. Be aware that changing to a clear,
unobstructed lane will also result in your vehicle
accelerating.
Be certain to deactivate the system when
you pull into an exit lane for a highway off-
ramp.<
Also, vehicles traveling in a staggered manner
on a highway may cause a delay in the system's
reaction to a vehicle in front of you or may cause
the system to react to a vehicle actually in the
lane next to you. Always be ready to take action
or apply the brakes if necessary.
Active cruise control can only decelerate the
vehicle to approx. 20 mph/30 km/h. If the sys-
tem reduces vehicle speed below 20 mph/
30 km/h or if DSC/ABS is engaged while driving,
the system will automatically deactivate.
Remember, the system cannot stop your
vehicle. In addition, the system is deacti-
vated whenever the driver applies the vehicle
brakes, shifts the transmission to neutral/N, or
deactivates DSC. After any deactivation, the
system will no longer automatically activate the
vehicle brakes, which means the driver must
intervene and resume manual braking. You
should then reactivate the system only when
you are fully aware of the prior speed and dis-
tance settings.<
Controls
75Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Everything under control
Odometer, outside
temperature display, clock
1Time, outside temperature and date
2Odometer and trip odometer
3Press button:
>with ignition switched on, trip odometer
is reset
>with the ignition switched off, time, out-
side temperature and odometer are
briefly displayed
From radio readiness the outside temperature
and the time are displayed.
Date retrieval:
Press CHECK button on turn signal lever, refer
to page81.
Time and date setting, refer to page83.
You can set the unit of measure 7 or 6 on the
Control Display, refer to Units of measure on
page85.
Outside temperature warning
If the display drops to +377/+36, a signal
sounds and a warning lamp lights up. A mes-
sage appears on the Control Display. There is
an increased danger of ice.
Even at temperatures above +377/
+36 ice can form. Therefore, drive care-
fully, e.g. on bridges and sections of road in the
shade, otherwise there is an increased accident
risk.<
Tachometer
The white-striped advance warning field,
arrow1, changes depending on the engine
temperature. With increasing engine tempera-
ture the advance warning field becomes corre-
spondingly smaller. Avoid allowing the engine
speed to rise as far as the orange warning field
whenever possible.
Be sure to avoid engine speeds in the red warn-
ing field, arrow2. In this range, the fuel supply is
interrupted to protect the engine.
Coolant temperature
Should the coolant, and with it the engine
become too hot, a warning lamp lights up. In
addition, a message appears on the Control
Display.
Checking coolant level, refer to page219.
Everything under control
80 12.Press the controller to apply the setting.
The date entry is stored.
To exit the menu:
Select the arrow and press the controller.
Check Control
The concept
The Check Control monitors functions in the
vehicle and issues a message if there is a mal-
function in the monitored systems. This kind of
Check Control message consists of indicator
and warning lamps in the instrument cluster,
and if necessary an acoustic signal and text
messages at the bottom of the Control Display.
Indicator and warning lamps
The indicator and warning lamps can light up in
different combinations and colors.
means that a Check Control message has
been generated. The symbol continues to be
visible even when the Check Control message
disappears after a short time. The warning
lamps and text messages are stored and can be
displayed later, also refer to page81.
Explanatory text messages
Text message at the bottom edge of the Con-
trol Display explain the meaning of the dis-
played indicator and warning lamps.
You can display additional information on most
Check Control messages later, e.g. on the
cause of the malfunction and on corresponding
need for action, see below.
In urgent cases, this information will be shown
as soon as the corresponding lamp comes on.
Exit the displayed information:
Select the arrow and press the controller.
Hiding Check Control messages
Press the CHECK button on turn signal lever.
Some Check Control messages remain visible
until the malfunctions have been rectified. They
cannot be hidden. If a number of malfunctions
Everything under control
82
Displays after completion of trip
Malfunction reports generated during the trip
are shown consecutively when you switch off
the ignition.
Before the display disappears, you can display
the messages once again. Press the CHECK
button for approx. 2 seconds. If several mes-
sages are present, you can continue to press
the CHECK button to view them in succession.
The display goes out
>automatically after a brief period
>when you press the CHECK button again
for approx. 2 seconds
Speed limit
You can enter a speed and a Check Control
message indicates when you have reached this
speed. This enables you, for example, to
receive warnings if you exceed a speed limit in
an urban area.
You are only warned of reaching this speed a
second time if your vehicle speed falls below it
again by at least 3 mph/5 km/h.
Displaying, setting or changing limit
iDrive, for explanation of principle, refer to
page16.
1.Open the start menu.
2.Open "Navigation".
Without navigation system
*:
Open "Car Data".
3.Select "Car Data" and press the controller.
4.Select "Limit" and press the controller.5.Select the speed value and press the con-
troller.
6.Turn the controller to set the limit. If
needed, hold it against a slight resistance
to enter a larger difference.
7.Press the controller to apply the setting.
The limit is automatically activated.
Applying your current speed as limit
Select "Select current speed" and press the
controller. The system adopts your current
speed as the limit.
Activating limit
Select "On" and press the controller.
Limit is automatically activated.
Stopwatch
iDrive, for explanation of principle, refer to
page16.
1.Open the start menu.
2.Open "Navigation".
Without navigation system
*:
Open "Car Data".
3.Select "Car Data" and press the controller.
4.Select "Stopwatch" and press the control-
ler.
Starting, stopping or resetting
>Select "Start" and press the controller.
The stopwatch starts at the displayed time.
>Select "Reset" and press the controller.
The stopwatch is reset and it restarts if it
was running beforehand.
Technology for comfort, convenience and safety
86
Technology for comfort, convenience and
safety
PDC Park Distance Control*
The concept
The PDC assists you when you are parking.
Acoustic signals and an optical display
* alert
you to the approach of an object from behind
your vehicle. To measure the distance, there
are four ultrasonic sensors in each bumper.
The range of these sensors is approx. 7 ft/2 m.
However, an acoustic warning first sounds for
the sensors at the front and at the two rear cor-
ners at approx. 24 in/60 cm, and for the center
rear sensors at approx. 5 ft/1.50 m.
PDC is a parking aid that can indicate
objects when they are approached
slowly, as is usually the case when parking.
Avoid approaching an object at high speed, oth-
erwise the physical circumstances would mean
that the system warning was too late.<
Automatic activation
The system starts to operate automatically
approx. 1 second after you select reverse gear
or move the selector lever into position R with
the engine running or the ignition switched on.
Wait this short period before driving.
Manual activation
Press button, the LED lights up.
Manual deactivation
Press the button again; the LED goes out.
After driving approx. 165 ft/50 m or at over
approx. 20 mph/30 km/h, the system is
switched off and the LED goes out. You can
reactivate the system manually as needed.
Signal tones
When nearing an object, the position is corre-
spondingly indicated by an interval tone. Thus,
an object detected to the left rear of the vehicle
will be indicated by a signal tone from the left
rear speaker, etc. As the distance between
vehicle and object decreases, the intervals
between the tones become shorter. If the dis-
tance to the nearest object falls to below
roughly 1 ft/30 cm, then a continuous tone
sounds.
An intermittent tone is interrupted after approx.
3seconds:
>if you remain in front of an object that was
only detected by one of the corner sensors
>if you drive parallel to a wall
Malfunction
The LED in the button flashes and a message
appears on the Control Display. PDC is mal-
functioning. Have the system checked.
To prevent this problem, keep the sensors
clean and free of ice or snow in order to ensure
that they will continue to operate effectively. Do
not spray the sensors with high-pressure clean-
ers for long periods and maintain a distance of
at least 4 in/10 cm to them.
PDC with visual warning*
You can also have the system show distances
to objects on the Control Display. Objects that
are farther away are already shown there before
a signal tone sounds. The setting is stored for
the remote control currently in use.