225 Controls in detail
3-zone automatic climate control*
Operating the automatic climate control system in automatic mode
You can switch the automatic climate con-
trol system on and off separately for each
zone as needed.
Activating
Press buttonU (
page 222) while
the engine is running.
The indicator lamp on the button
comes on.
AUTO
appears in the
displaye (
page 222). Air volume
and air distribution are controlled sep-
arately for each zone.
Use temperature controls1 and9
(page 222) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the interior is ad-
justed automatically.
Deactivating
Press one button of the air distribution
(page 222) or press button
orQ (
page 222).
The indicator lamp on buttonU
goes out and AUTO
disappears in the
displaye (
page 222).
Depending on which button you press –
the air distribution button or the air vol-
ume button orQ – automatic
control of either the air distribution or
air volume is switched off.
Setting the temperature
Use temperature control1 and9
(page 222) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
The automatic climate control will adjust
to the set temperature as fast as possible.
Increasing
Turn temperature control1
and/or9 slightly clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing
Turn the temperature control1
and/or9 slightly counterclockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
i
When operating the automatic climate
control system in automatic mode, you will only
rarely need to adjust the temperature, air volume
and air distribution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary.
227 Controls in detail
3-zone automatic climate control*
Adjusting air volume
Five blower speeds are available.
Press button to decrease or
buttonQ to increase air volume
(page 222) to the desired level.
The indicator lamp on buttonU
goes out.
The AUTO
display disappears in the
displaye (
page 222) and the auto-
matic mode is switched off. The select-
ed blower speed appears in the
displaye (page 222).
Front defroster
You can use this setting to defrost the
windshield, such as when it is iced up. You
can also use it to defog the windshield and
side windows.
Activating
Press button0 (
page 222).
The indicator lamp on the button
comes on.The automatic climate control switches to
the following functions automatically:
maximum blower speed and heating
power
air flows onto the windshield and the
front side windows (side air vents must
be open)
the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Deactivating
Press button0 (
page 222).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
i
Keep this setting selected only until the
windshield or the side windows are clear again.
When the defrost setting has been selected, only
the rear window defroster can be switched on.
No other settings are possible.
i
To switch off, you can also press
button´ orU (
page 222).
228 Controls in detail3-zone automatic climate control*Windshield fogged on the outside
Switch the windshield wipers on
(page 61).
Press buttonU (
page 222).
AUTO
appears in the displaye
(
page 222). Air volume and air distri-
bution are controlled separately for
each zone.
If the automatic air distribution and air vol-
ume are switched off:
Press buttons8 andY
(page 222).
Maximum cooling MAX COOL
If the air distribution control as well as the
airflow volume control are set toU and
there is a high need for cooling, the
MAX COOL function is activated.
“MAX COOL” appears in the front and rear
display.
This provides the fastest possible cooling
of the vehicle interior (when windows and
tilt/sliding sunroof* are closed).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
i
Keep this setting selected only until the
windshield is clear again.
Warning!
G
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior win-
dow fogging persists, make sure the air
conditioning (
page 230) is activated, or
press button0.
233 Controls in detail
3-zone automatic climate control*
Activating rear automatic climate
control
Press buttonU.
The indicator lamp on the button
comes on. The temperature, air vol-
ume, and air distribution are adjusted
automatically.
Deactivating rear automatic climate
control
Press button´.
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Operating from the front
Deactivating
Press button> (
page 222).
The indicator lamp on the button goes
out.
In displaye (
page 222), you will see
the> symbol followed by
MODE
for
approximately 3 seconds.
Press button´ (
page 222).
In displaye (
page 222), you will see
the> symbol followed by
OFF
.
The rear automatic climate control is
switched off.
1
Left rear center air vent, adjustable
2
Right rear center air vent, adjustable
3
Temperature control
4
Air distribution and air volume
(automatic, manual)
5
Air distribution (directs air through
the center air vents)
6
Air distribution (directs air through
the footwells and side air vents)
7
Rear automatic climate control
on/off
8
Decreasing air volume
9
Indicator lamps for air volume
settings
a
Increasing air volume
i
The automatic climate control must be
switched on (
page 224).
i
Switch off the rear automatic climate con-
trol for improved cooling or heating output in the
front passenger compartment.
You can also switch off the rear automatic
climate control from the front passenger com-
partment (
page 222).
234 Controls in detail3-zone automatic climate control*Reactivating
Press button> (
page 222).
The indicator lamp on the button
comes on.
In displaye (
page 222), you will see
the> symbol followed by
ON and
MODE
. The
MODE
display is cleared and
the indicator lamp on button>
goes out after approximately
3 seconds.
The rear automatic climate control
switches on.Setting the temperature
Press button> (
page 222).
The indicator lamp on the button
comes on.
In displaye (
page 222), you will see
the> symbol followed by
MODE
.
Set the desired temperature for the
rear passenger compartment using
temperature control3 (
page 233).
After approximately 3 seconds after
the last adjustment, the display switch-
es back to its standard display and the
indicator lamp on button> goes
out.Adjusting air distribution
Use the air distribution controls5 or6
to adjust the air distribution for the rear
passenger compartment.
The symbols on the controls represent the
following functions:
Adjusting manually
Press the desired air distribution con-
trol.
The indicator lamp on buttonU
goes out.
i
You can also press the>button once
more to switch back to the standard display.
Symbol
Function
Z
Directs air to the center air
vents
Y
Directs air to the footwells and
the side air vents
247 Controls in detail
Driving systems
Activating cruise control
You can activate the cruise control when
the vehicle speed is above
20 mph (30 km/h).
In the following cases you cannot activate
the cruise control:
when you brake
when you have set the parking brake
when the automatic transmission is set
to positionP, R, or N
if the ESP
® is switched off
if the ESP
® has switched off due to a
malfunctionSetting current speed
Accelerate or decelerate to the desired
speed.
Briefly lift the cruise control lever in
direction of arrow1 or depress in
direction of arrow2.
The current speed is set.
Remove your foot from the accelerator
pedal.
The cruise control is activated.
The current set speed appears in the
multifunction display for approximately
5 seconds.Canceling cruise control
There are several ways to cancel the cruise
control:
Step on the brake pedal.
The cruise control is canceled. The last
speed set is stored for later use.
or
Briefly push the cruise control lever in
direction of arrow3 (
page 246).
The cruise control is canceled. The last
speed set is stored for later use.
i
The vehicle speed displayed in the speedom-
eter can briefly vary from the speed setting for
the cruise control system.
i
On uphill grades, the cruise control may not
be able to maintain the set speed. Once the
grade eases, the set speed will be resumed.
On downhill grades, the cruise control maintains
the set speed by braking with the vehicle’s
braking system. In addition, on longer downhill
grades the automatic transmission will down-
shift automatically.
i
The last stored set speed is canceled when
the engine is turned off.
248 Controls in detailDriving systems
Setting a higher speed
You can increase the speed in two ways.
Adjustment in 1 mph (Canada: 1 km/h)
increments
Briefly lift the cruise control lever up to
the resistance point in direction of
arrow1 (
page 246).
Release the cruise control lever.
The vehicle speed increases in incre-
ments of 1 mph (Canada: 1km/h).Adjustment in 5 mph
(Canada: 10 km/h) increments
i
The cruise control switches off
automatically when
you step on the brake pedal
you depress the parking brake pedal
The cruise control switches off automatically and
an acoustic warning will sound when
the vehicle speed is below 20 mph
(30 km/h)
the ESP
® is in operation
the ESP
® is switched off with the ESP
®
switch (
page 99)
the ESP
® has switched off due to a
malfunction (
page 419)
you set the automatic transmission toN
while driving
Observe additional messages in the
multifunction display that may appear.
!
Setting the automatic transmission toN
while driving cancels the cruise control.
However, the automatic transmission should not
be set toN while driving except to coast when
the vehicle is in danger of skidding (e.g. on icy
roads).
i
Depressing the accelerator pedal does not
deactivate the cruise control. After a brief accel-
eration (e.g. for passing), the cruise control will
resume the last set speed.
i
The set value is increased in 1 mph
(Canada: 1 km/h) increments each time you lift
the cruise control lever up to the resistance
point.
Warning!
G
You can increase the vehicle speed in
5 mph (Canada 10 km/h) increments.
When using this feature, keep in mind that it
may take a brief moment until the vehicle
has reached the set speed.
Increase the vehicle speed to a value that
the prevailing road conditions permit. Other-
wise, sudden and unexpected acceleration
of the vehicle could cause an accident
and/or serious injury to you and others.i
The set value is increased in
5 mph (Canada: 10 km/h) increments each time
you lift the cruise control lever past the
resistance point.
250 Controls in detailDriving systems
Briefly press the cruise control lever
down past the resistance point in direc-
tion of arrow2 (
page 246).
Release the cruise control lever.
The vehicle speed decreases in incre-
ments of 5 mph (Canada: 10 km/h).Setting to last stored speed
(“Resume” function)
Briefly pull the cruise control lever in di-
rection of arrow4 (
page 246).
The cruise control resumes to the last
set speed, or if no speed is stored, it
will set and store the current speed.
Remove your foot from the accelerator
pedal.
The last set speed appears in the multi-
function display for approximately
5 seconds.
Distronic*
When activated, the Distronic adaptive
cruise control system increases the driving
convenience afforded by the cruise control
while traveling on expressways and other
major roadways.
If the Distronic distance sensor detects
a slower moving vehicle directly ahead,
your vehicle speed will be reduced so
that you follow that vehicle at your
preset following distance.
If there is no vehicle directly ahead of
you, Distronic will function in the same
way as standard cruise control
(page 245).
i
The new speed is set and the vehicle will
decelerate. Keep in mind that it may take a brief
moment until the vehicle has reached the set
speed.
Warning!
G
The set speed stored in memory should only
be set again if prevailing road conditions
permit. Possible acceleration or decelera-
tion differences arising from returning to the
preset speed could cause an accident
and/or serious injury to you and others.