Page 177 of 480

176 Controls in detailAutomatic transmissionDownshifting
Briefly press the gear selector lever to
the left in theD-direction.
or
Briefly press button1 on the left side
of the steering wheel (
page 172).
The transmission shifts to the next
lower gear.Kickdown
Using the kickdown when driving in the
MANUAL program mode is not possible.
Deactivating manual shift program
Press the program mode selector
switch (
page 174) repeatedly
until
Cor
S appears in the right
multifunction display.
or
Restart the engine.
The transmission will go to the
automatic program mode (C orS).
The MANUAL program mode is not
stored.Emergency operation
(Limp Home Mode)
If vehicle acceleration worsens or the
transmission no longer shifts, the trans-
mission is most likely operating in limp
home (emergency operation) mode. In this
mode only second gear and reverse gear
can be activated.
Stop the vehicle in a safe location.
Move gear selector lever toP.
Turn off the engine.
Wait at least 10 seconds before
restarting.
Restart the engine.
Move gear selector lever to positionD
(for second gear) orR.
Have the transmission checked at an
authorized Mercedes-Benz Center as
soon as possible.
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced
vehicle control. Your vehicle’s ABS will not
prevent this type of loss of control.iWhen you brake or stop, the transmis-
sion shifts down to a gear from which
you can easily accelerate or take off.
Page 178 of 480

177 Controls in detail
Good visibility
Good visibility
For information on windshield wiper opera-
tion, see “Windshield wipers” (
page 54).
Headlamp cleaning system
The button is located on the left side of the
dashboard.
1Headlamp washer button
Switch on the ignition (
page 36).
Press button1.
The headlamps are cleaned with a
high-pressure water jet.
For information on filling up the washer flu-
id reservoir, see “Windshield washer sys-
tem and headlamp cleaning system”
(
page 280).
Rear view mirrors
For information on setting the rear view
mirrors, see “Mirrors” (
page 44).
Auto-dimming rear view mirror
The reflection brightness of the exterior
rear view mirror on the driver’s side and
the interior rear view mirror will respond
automatically to glare when
the ignition is switched on
and
incoming light from headlamps falls on
the sensor in the interior rear view mir-
ror.
The interior rear view mirror will not react if
reverse gear is engaged
the interior lighting is switched on
iThe headlamps will automatically be
cleaned when you have
switched on the headlamps
and
operated the windshield wipers
with windshield washer fluid
fifteen times
When you switch off the ignition, the
counter resets.
Page 179 of 480

178 Controls in detailGood visibility
Sun visors
The sun visors protect you from sun glare
while driving.
Swing sun visors down when you expe-
rience glare.
1Mounting
2Mirror cover
3Mirror lamp
4Holder for gas cards
To use mirror, lift up cover2.
Warning!
G
The auto-dimming function does not react if
incoming light is not aimed directly at sen-
sors in the interior rear view mirror.
The interior rear view mirror and the exterior
rear view mirror on the driver’s side do not
react, for example, if the wind screen is in-
stalled.
Glare can endanger you and others.Warning!
G
In case of an accident liquid electrolyte may
escape from the mirror housing if the mirror
glass breaks.
Electrolyte has an irritating effect. Do not al-
low the liquid to come into contact with
eyes, skin, clothing, or respiratory system.
In case it does, immediately flush affected
area with water, and seek medical help if
necessary.
!Electrolyte drops coming into contact
with the vehicle paint finish can be
completely removed only while in the
liquid state by applying plenty of water.Warning!
G
Exercise care when using the passen-
ger-side exterior rear view mirror. The mirror
surface is convex (outwardly curved surface
for a wider field of view). Objects in mirror
are closer than they appear. Check your in-
terior rear view mirror or glance over your
shoulder before changing lanes.
Warning!
G
Do not use the vanity mirror while driving.
Keep the mirrors in the sun visors closed
while vehicle is in motion. Reflected glare
can endanger you and others.
Page 180 of 480

179 Controls in detail
Good visibility
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.Activating
Switch on the ignition (
page 36).
Press button F on the automatic cli-
mate control panel (
page 181).
The indicator lamp on the button
comes on.
Deactivating
Press button F (
page 181) once
more.
The indicator lamp on the button goes
out.
iIf sunlight enters through a side win-
dow, close mirror cover 2 (if open),
and disengage sun visor from
mounting1 and pivot sun visor to the
side.
If the sun visor is disengaged from
mounting 1, mirror lamp3 will
switch off.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.
!The rear window defroster cannot be
switched on when the retractable hard-
top is open. The indicator lamp will
start flashing if the hardtop is open.
Close the retractable hardtop.
The rear window defroster can then be
switched on.
!If the rear window defroster switches
off too soon and the indicator lamp
starts flashing, too many electrical con-
sumers are operating simultaneously
and there is insufficient voltage in the
battery. The system responds automat-
ically by switching the rear window de-
froster off.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically switches back on automati-
cally.
Page 181 of 480
180 Controls in detailAutomatic climate control
Page 182 of 480
181 Controls in detail
Automatic climate control
Automatic climate control panel
Item
1
Center air vent, adjustable
2
Cockpit air vent, fixed
3
Side defroster vent
4
Side air vent, adjustable
5
Center air vent, adjustable
6
Thumbwheel for air volume control
for right side air vents
7
Thumbwheel for air volume control
for center air vents
8
Thumbwheel for air volume control
for left side air vents
9
Automatic climate control paneliFor draft-free ventilation, move the slid-
ers for center air vents 1 and 5 to
the middle position.
Item
1
Temperature control, left
2
Air distribution, left (automatic or
manual operation)
3
Front defroster
4
Air recirculation
5
Rear window defroster
6
Air distribution, right (automatic or
manual operation)
7
Temperature control, right
8
Automatic climate control on/off
(entire system)
9
Residual heat/ventilation
a
Air volume control (automatic, man-
ual)
b
AC cooling on/off
Page 183 of 480

182 Controls in detailAutomatic climate controlThe automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing on the selected interior temperature
and the current outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the A/Cmode is deactivated
(
page 189).
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents can be very
hot or very cold (depending on the set tem-
perature). This may cause burns or frostbite
on unprotected skin in the immediate area
of the air vents. Always keep sufficient dis-
tance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution control (
page 181) to di-
rect the air to air vents in the vehicle interior
that are not in the immediate area of unpro-
tected skin.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the
filter before its scheduled interval.
A clogged filter will reduce the air vol-
ume to the interior.
If the vehicle interior is hot, ventilate
the interior before driving off. The
climate control will then adjust the
interior temperature to the set value
much faster.
Keep the air intake grille in front of the
windshield free of snow and debris.
When the retractable hardtop is closed,
do not obstruct air flow by placing ob-
jects on the air flow-through exhaust
slots below the rear window.
Page 184 of 480

183 Controls in detail
Automatic climate control
Deactivating the automatic climate control system
Deactivating
Press button ´ (
page 181).
The indicator lamp on the button
comes on.Reactivating
Press button ´ (
page 181).
The indicator lamp on the button goes
out.
The previous settings are in effect
again.
or
Turn one of the temperature controls
on the automatic climate control panel
(page 181).
The indicator lamp on button ´
goes out.Operating the climate control system
in automatic mode
Air distribution and air volume can be ad-
justed automatically by the automatic cli-
mate control system. You can also adjust
the settings for air distribution and air vol-
ume manually.
iWhen the automatic climate control
system is switched off, the outside air
supply and circulation are also
switched off. Only choose this setting
when the retractable hardtop is open.
Otherwise the windows could fog up.
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
In automatic mode, cooling with dehu-
midify is switched on. This function can
be switched off if necessary
(page 181).