
At a glance
 11Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
7Instrument cluster12
10Ignition lock52
11Buttons
* on the steering wheel12Horn: the entire surface
13Steering wheel adjustment47
15Releasing the hood198
16Opening the luggage compartment lid
*
6
Turn signals58
High beams, headlamp flasher95
Roadside parking lamps
*95
Computer70
Settings and information about the 
vehicle73
Instrument lighting96
8
Windshield wipers59
Rain sensor
*59
9Switching the ignition on/off and 
starting/stopping the engine52
Telephone
*:
>Press: accepting and ending a 
call, starting dialing
* for a 
selected phone number and 
redialing if no phone number is 
selected
>Press longer: redialing
Volume
Activating/deactivating voice com-
mand system
*22
Changing radio station
Selecting music track
Scrolling through phone book and 
lists with stored phone numbers
Individually programmable47 
Individually programmable47 
14
Cruise control
*60
Active cruise control
*62 

Cockpit
12
Instrument cluster
1Speedometer
2Indicator lamps for turn signals
3Indicator and warning lamps13
4Displays for active cruise control
*62
5Tachometer69
6Energy Control70
7Display for
>Clock69
>Outside temperature69
>Indicator and warning lamps798Display for
>Position of automatic transmission
*57
>Sequential manual gearbox SMG
*55
>Computer70
>Date of next scheduled service, and 
remaining distance to be driven74
>Odometer and trip odometer69
>Checking engine oil level
*199
>Settings and information73
9Fuel gauge70
10Resetting trip odometer69 

Driving
60
Activating intermittent wipe or rain 
sensor
Press button 3. The LED in the button lights up.
Setting speed for intermittent wipe or 
sensitivity of the rain sensor
Slide switch5 up or down.
Deactivating intermittent wipe or rain 
sensor
Press button 3 again. The LED goes out.
Deactivate the rain sensor before enter-
ing an automatic car wash. Failure to do 
so could result in damage caused by undesired 
wiper activation.<
Cleaning windshield and headlamps*
Pull lever 4.
Washer fluid is sprayed onto the windshield and 
the wipers are operated for a short time.
When the vehicle lighting system is switched 
on, the headlamps are cleaned at regular and 
appropriate intervals.
Do not use the washers if there is any 
danger that the fluid will freeze on the 
windshield. If you do, your vision could be 
obscured. Antifreeze should therefore be 
added to the fluid, refer to Washer fluid. 
Do not use the washers when the washer fluid 
reservoir is empty, otherwise you will damage 
the washer pump.<
Windshield washer nozzles
The windshield washer nozzles are heated 
automatically while the engine is running or the 
ignition switched on.
Washer fluid
Washer fluid antifreeze is flammable. 
Always keep it well away from sparks and 
open flames, and store it in the tightly closed 
original container, well out of the reach of chil-
dren. Comply with the instructions on the con-
tainer.<
Washer fluid reservoir
Fill with water and, if required, with a washer 
antifreeze, according to manufacturer's recom-
mendations.
Mix the water and antifreeze before filling 
the washer fluid reservoir to make sure 
the correct concentration is maintained.<
Capacity
Approx. 6.3 US quarts/6 liters.
Cruise control*
The concept
Cruise control is available for use at speeds of 
approx. 20 mph or 30 km/h. The car then stores 
and maintains the speed that you specify using 
the lever on the steering column. In order to 
maintain the specified speed, the system 
brakes the vehicle when the engine braking 
effect is insufficient on downhill gradients.
Do not use cruise control when driving 
conditions are unfavorable for driving at a 
constant speed. Otherwise you could lose con-
trol of the vehicle and cause an accident as a 
result. Unfavorable driving conditions include, 
for example, winding roads, heavy traffic or a  

Controls
 61Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
poor road surface, e.g. snow, rain, ice or loose 
material.<
Manual transmission/SMG
You can shift gears while cruise control is acti-
vated. An indicator lamp notifies you that you 
should shift gears when you drive for an 
extended period at very high or very low engine 
speeds, or the system is deactivated.
In Drive mode, the SMG acts similarly to an 
automatic transmission in position D.
One lever for all functions
1Storing and maintaining speed or accelerat-
ing
2Storing and maintaining speed or deceler-
ating
3Deactivating cruise control
4Resuming a speed stored beforehand
Maintaining current speed
Tap the lever, arrow 1, or pull it briefly, arrow 2.
The car's current speed is stored and main-
tained. It is displayed in the speedometer and 
briefly in the instrument cluster.
On uphill gradients, it may prove impossible to 
maintain the set speed if current engine power 
output is insufficient. If the engine braking 
effect is insufficient on downhill slopes, the sys-
tem will brake the vehicle slightly.
Increasing desired speed
Repeatedly press the lever to the resistance 
point or beyond, arrow1, until the desired 
speed is reached.>Each time the lever is pressed to the resis-
tance point, the desired speed is increased 
by approx. 1 mph or 1 km/h.
>Each time the lever is pressed beyond the 
resistance point, the desired speed is 
increased by up to 5 mph or 10 km/h.
The system stores and maintains the speed.
Accelerating using the lever
Accelerating slightly:
Press the lever to the resistance point, arrow 1, 
until the desired speed is reached.
Accelerating significantly:
Press the lever beyond the resistance point, 
arrow 1, until the desired speed is reached.
The vehicle accelerates without pressure on 
the accelerator pedal. The system stores and 
maintains the speed.
Decreasing desired speed
Repeatedly pull the lever to the resistance point 
or beyond, arrow 2, until the desired speed is 
displayed.
>Each time the lever is pulled to the resis-
tance point, the desired speed is decreased 
by approx. 1 mph or 1 km/h.
>Each time the lever is pulled beyond the 
resistance point, the desired speed is 
re duc e d by up to 5 mph or 10 k m/h until the 
minimum speed of 20 mph or 30 km/h is 
achieved.
The system stores and maintains the speed.
If the speed is to be reduced significantly, 
depress the brake; otherwise, decelera-
tion may be insufficient and dangerous situa-
tions could result.<
Deactivating cruise control
Tap the lever upwards or downwards, arrow3. 
The displays in the speedometer disappear.
In addition, the system is automatically deacti-
vated:
>When you brake the vehicle 

Driving
62 >When you switch gears very slowly or shift 
to idle in cars with manual transmission
>When you select the automatic transmis-
sion's/SMG's neutral position N
>When you activate DTC or deactivate DSC
>When DSC or ABS is intervening
Cruise control is not deactivated by depressing 
the accelerator pedal. Once the accelerator 
pedal is released, the stored speed is achieved 
again and maintained.
Warning lamp
The warning lamp comes on when 
cruise control has been automatically 
deactivated by engaging the hand-
brake or as a result of DSC intervening. A mes-
sage appears on the Control Display.
Resuming a speed stored beforehand
Briefly press the button, arrow 4. the stored 
speed is resumed and maintained.
In the following instances, the stored speed is 
deleted and can no longer be resumed:
>When driving stability control systems are 
intervening
>In cars with manual transmission: when you 
shift gears very slowly or shift to idle posi-
tion
>With automatic transmission/SMG: when 
you engage selector lever position N
>When the ignition is switched off
Displays in the instrument cluster
1Stored speed
2Selected speed is displayed brieflyIf --- mph or --- km/h temporarily appears 
in the instrument cluster display, it is pos-
sible that the system prerequisites for operation 
are currently not met. 
Calling up Check Control messages, refer to 
page80.<
Malfunction
The warning lamp comes on when 
the system has failed. A message 
appears on the Control Display. You 
can find more information starting on page79. 
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 high-
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.
Within the limits of its capability, the system 
automatically adapts the car's speed to that of a 
slower vehicle in front of you. You can specify 
the distance to be maintained from the vehicle 
in front in four stages. For safety reasons, the 
distance is speed-dependent. Based on your 
selected distance setting, the system automat-
ically decreases the throttle setting and lightly 
applies the brakes if necessary. The vehicle 
brake lamps will automatically illuminate to sig-
nal a following driver to take action. In addition, 
it may be necessary for the vehicle or the driver 
to downshift, depending on the kind of trans-
mission your vehicle is equipped with, to main-
tain the distance setting selected. If the vehicle 
ahead speeds up or when the lane ahead  

Controls
 63Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
becomes clear, your vehicle will accelerate to 
the speed you have selected by increasing the 
throttle setting and shifting gears automatically 
or by the driver as needed. Your selected speed 
will be held when driving downhill, too.
Since this active cruise control system is a new 
technology and operates differently from con-
ventional 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 System 
limitations section beginning on page66.
Braking sensation
The system's automatic brake operation results 
in a braking sensation that is slightly different 
from what you feel when you brake the vehicle 
yourself in a similar situation. Possible noises 
during automatic deceleration are normal.
Manual transmission/SMG
You can shift gears while cruise control is acti-
vated. An indicator lamp notifies you that you 
should shift gears when you drive for an 
extended period at very high or very low engine 
speeds, or the system is deactivated.
In Drive mode, the SMG acts similarly to an 
automatic transmission in position D.
Range of applications
The minimum desired speed is 20 mph or 
30 km/h, and the maximum desired speed is 
110 mph or 180 km/h.
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. Otherwise, driving conditions could 
result which violate the law or pose a risk of 
accident.<
One lever for all functions
1Store and increase desired speed
2Store and decrease desired speed
3Deactivate system, refer to page65
4Resume stored desired speed and dis-
tance, refer to page65
5Select distance to vehicle driving ahead, 
refer to page64
Maintaining current speed
Briefly press the lever, arrow 1, or briefly pull it, 
arrow 2, at a driving speed of more than approx. 
20 mph or 30 km/h. 

Controls
 65Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Use good judgement to select the appro-
priate following distance given road con-
ditions, traffic, applicable laws and driving rec-
ommendations for safe following distance. 
Otherwise, you may be in violation of the law or 
an accident could result.<
Deactivating cruise control
Press the lever upward or downward, arrow3. 
The displays in the speedometer disappear.
In addition, the system is automatically deacti-
vated:
>When you brake the vehicle
>When the speed is reduced to below 
20 mph or 30 km/h due to a traffic situation
>When you switch gears very slowly or shift 
to idle in cars with manual transmission
>When you select the automatic transmis-
sion's/SMG's neutral position N
>When you activate the Dynamic Traction 
Control DTC
>When you deactivate the Dynamic Stability 
Control DSC
>When DSC or ABS is intervening
>When the system does not recognize any 
objects for a longer period of time, e.g. on infrequently traveled roads without a shoul-
der or guard rails, or if the radar sensor is 
covered with dirt, refer to page66
>When you apply the handbrake
When the system is deactivated, you 
must brake the vehicle yourself and/or 
maneuver as necessary, otherwise there is a 
risk of accident.<
Warning lamp
The warning lamp comes on when 
active cruise control has been auto-
matically deactivated due to a driving 
speed below 20 mph or 30km/h, an application 
of the handbrake or a DSC intervention. A mes-
sage appears on the Control Display.
Resuming stored desired speed and 
distance
Briefly press the button, arrow 4. 
The stored speed and distance are regained 
and maintained.
In the following instances, the stored speed is 
deleted and can no longer be resumed:
>When driving stability control systems are 
intervening
>In cars with manual transmission: when you 
shift gears very slowly or shift to idle posi-
tion
>With automatic transmission/SMG: when 
you engage selector lever position N
>When the ignition is switched off
Displays in the instrument cluster
1Stored desired speed
2Shows yellow: vehicle detected ahead Distance 3 
This distance is always set when 
the system is used for the first 
time after starting the engine.
Distance 4 

Driving
66 Flashes in red: system cannot maintain dis-
tance; driver must brake the vehicle
Flashes in yellow: driving stability control 
systems are intervening; cruise control is 
deactivated
3Selected distance to vehicle ahead
The indicator lights up as soon as the sys-
tem is activated.
4Selected desired speed is temporarily dis-
played
If --- mph or --- km/h temporarily appears 
in the instrument cluster display, it is pos-
sible that the system prerequisites for operation 
are currently not met. Calling up Check Control 
messages, refer to page80.<
Warning lamps
The indicator2 flashes in red; a 
signal sounds. 
The system indicates that you 
must brake and/or maneuver the 
vehicle yourself. Active cruise con-
trol cannot automatically restore the distance to 
the vehicle ahead. 
This indicator does not release you from your 
responsibility to adapt your desired speed and 
driving style to prevailing driving conditions.
The indicator 2 flashes in yellow. 
The prerequisites for operating 
active cruise control are not met, 
e.g. as a result of ABS or DSC interventions. Active cruise control is deacti-
vated. You can reactivate the system, if desired, 
by tapping or pulling the lever when road and 
traffic conditions permit. It is not possible to 
resume a stored speed.
Radar sensor
The sensor's ability to detect vehicles ahead 
may be restricted as a result of heavy rain, dirt, 
snow or ice. If necessary, clean the radar sensor 
located in the front bumper, see arrow. Be sure 
to use particular care when removing any layers 
of snow or ice from the sensor.
When the radar sensor is not properly posi-
tioned, active cruise control cannot be activated 
at all.
Malfunction
The warning lamp comes on when 
the system has failed. A message 
appears on the Control Display. You 
can find more information starting on page79. 
System limitations
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