
Driving
68 Especially 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 be held when driving down-
hill, too.
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 page71.<
Professional navigation system*
If a navigation DVD is in the drive, refer to 
page132, 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.
Brake pedal feel
>When the system brakes and you also 
depress the brake pedal, a somewhat differ-
ent braking feeling results.
>Any noises produced during automatic 
braking are normal.
Manual transmission
You can shift with the cruise control activated. 
Shifting information is provided or the system 
deactivates itself if you drive at very high or very 
low engine speeds for a longer period.
SMG
In the Sequential mode, shifting information is 
provided or the system deactivates itself if you 
drive at very high engine speeds for a longer 
period.
In the Drive mode the SMG acts similarly to an 
automatic transmission in the D position.
Operating active cruise control
1Store and increase desired speed
2Store and decrease desired speed 

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3Deactivate system, refer to page70
4Resume stored desired speed and dis-
tance, refer to page70
5Select distance to vehicle driving ahead, 
refer to page69
Maintaining current speed
Briefly press lever, arrow1, or briefly pull lever, 
arrow2, at a driving speed of more than approx. 
20 mph or 30 km/h.
The speed currently being driven is stored and 
maintained. It is indicated on the speedometer 
and briefly in the instrument cluster.
Selecting desired speed
Adjust your desired speed to the traffic 
conditions and remain ready to brake at 
all times, otherwise accidents can occur.<
The desired speed can drop on uphill grades if 
the engine output is insufficient.
Increasing in steps
Briefly press the lever repeatedly up to the 
resistance point or beyond, arrow1, until the 
desired speed is displayed.
>Each time the lever is briefly pressed up to 
the resistance point, the desired speed 
increases by approx. 1 mph or 1 km/h.
>Each time the lever is briefly pressed 
beyond the resistance point, the desired 
speed is increased by a maximum of 5 mph 
or 10 km/h until the maximum speed of 
110mph or 180km/h is reached.
The speed then displayed is stored and 
reached on a clear road.
Decreasing in steps
Repeatedly pull the lever up to the resistance 
point or beyond, arrow2, until the desired 
speed is displayed.
>Each time the lever is pulled up to the resis-
tance point, the desired speed decreases 
by approx. 1 mph or 1 km/h.
>Each time the lever is pulled beyond the 
resistance point, the desired speed is 
decreased by a maximum of 5 mph or 
10 km/h until the minimum speed of 
20 mph or 30 km/h is reached.
The speed then displayed is stored and 
reached on a clear road.
Select distance
>Rotary switch downward: 
Increase distance.
>Rotary switch upward: 
Decrease distance.
The selected distance is displayed in the instru-
ment cluster.
Distance 1
Distance 2  

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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.
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  

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case, you can choose to overcome the deceler-
ation by briefly pressing the accelerator pedal.
Driver interventions
Anytime the driver presses down on the 
accelerator pedal, any automatic braking 
action by the system is interrupted until the 
pedal is fully released. After doing this, release 
the accelerator and the system again controls 
your cruising speed and distance setting. While 
driving with the system activated, resting your 
foot on the accelerator pedal will cause the sys-
tem not to brake even if necessary. Be certain 
that floor mats or other objects on the vehicle 
floor do not interfere with movement of the 
accelerator pedal.<
While active cruise control is capable of 
braking your vehicle automatically when 
you approach a slower vehicle ahead, it is 
important to be aware that the ability of the sys-
tem to apply the brakes is also limited, e. g. 
when you reduce your desired speed sharply. 
The system cannot stop your vehicle. It uses 
only a portion of braking system capacity and 
does not utilize the full capacity of the vehicle 
braking system. Therefore, the system cannot 
decrease your speed due to large differences in 
speed between your vehicle and the vehicle 
ahead. Example: when you approach a vehicle 
traveling at a much lower speed than your own 
speed, such as approaching a toll booth or 
when a much slower vehicle cuts in front of you 
at close range.< 

Everything under control
76 To reset average fuel consumption: press BC 
button on turn signal lever for approx. 2 sec-
onds.
Displays on Control Display
You can also call up the computer via the iDrive. 
For explanation of principle, refer to page16.
1.Press the   button.
This opens the start menu.
2.Move the controller to the right to open 
"Navigation". 
Without navigation system
*:
Open "Car Data".
3.Select "Car Data" and press the controller.
4.Select "Onboard info" and press the con-
troller.
>Estimated time of arrival at destination:
>Entering a distance manually in the com-
puter, see below.
>Entering a destination in the navigation 
system
*, refer to page133.
>Cruising range>Distance to destination:
>Entering a distance manually in the com-
puter, see below.
>Entering a destination in the navigation 
system
*, refer to page133.
>Average speed
>Average fuel consumption
Resetting values
You can reset the values for the average speed 
and average fuel consumption:
1.Select the respective menu item and press 
the controller.
2.To confirm your selection, press the con-
troller again.
Entering a distance manually
1.Select "Distance to dest." and press the 
controller.
2.Turn the controller to select the distance to 
your destination. If needed, hold it against a 
slight resistance to enter a larger differ-
ence.
3.Press the controller to apply the setting.
The distance is automatically preset during the 
destination guidance of the navigation sys-
tem
*.
Trip computer*
The trip computer is suitable, for example, for a 
vacation trip.
1.Open the start menu.
2.Open "Navigation".
Without navigation system
*:
Open "Car Data". 

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9.Press the controller to apply the setting. 
The year is highlighted.
10.Turn the controller to make the adjustment.
11.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
Indicator and warning lamps can light up both in 
the display area1 and in the display2 in various 
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 page80.
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 the case of corresponding urgency, this infor-
mation is displayed immediately when the 
related lamp lights up.
Exit the displayed information: 
 Select the arrow and press the controller.
Importance of Check Control 
messages
Important Check Control messages continue to 
be displayed until the malfunctions have been 
corrected. They cannot be deleted. If a number 
of malfunctions occur simultaneously, they are 
displayed in succession.
Less important messages disappear after 
approx. 20 seconds, but remain in memory. 

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The symbols also indicate the status of the ser-
vice requirements display, refer to page77.
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 approximately 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. 

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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 sound 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 the R position 
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.