Page 190 of 498

188 Controls in detailClimate control (CLK 320)Increasing
Turn temperature control2 or3
(page 185) slightly to the right.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing
Turn temperature control2 or3
(page 185) slightly to the left.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Adjusting air distribution and volume
Use air distribution control4
(page 185) to adjust the air distribution.
The following symbols are found on the
controls:
Use the air volume control1
(page 185) to adjust the air volume. You
can select between six air volume speeds.Adjusting manually
Press buttonU (
page 185).
The indicator lamp on the button goes
out.
Select any of the six air volume speeds
and the air distribution.
Adjusting automatically
Press buttonU (
page 185).
The indicator lamp on the button
comes on. The temperature, air distri-
bution and volume are adjusted auto-
matically.
Symbol
Function
Z
Directs air to the windshield
and the side defroster vents
b
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
a
Directs air through the center,
side and rear passenger
compartment air vents
Page 199 of 498

197 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Deactivating the automatic climate control system
Deactivating
It is possible to deactivate the automatic
climate control system.
Press button´ (
page 195).
The indicator lamp on the button´
comes on.
The automatic climate control system
is deactivatedReactivating
Press button´ (
page 195).
The indicator lamp on the button´
goes out.
The automatic climate control system
is reactivated
Setting the temperature
Use temperature controls3 andd for
the left side or6 andb for the right side
(page 195) 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).
iWhen the air conditioning is switched
off, the outside air supply and circula-
tion are also switched off. Only choose
this setting for a short time. Otherwise
the windows could fog up.
iWhen operating the automatic climate
control system in automatic mode, you
will only rarely need to adjust the
temperature, air volume and air
distribution.
Page 200 of 498

198 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)Display1Temperature, left
2Blower speed
3Temperature, right
Increasing
Push temperature control3
and/or6 (
page 195).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing
Push temperature controlb
and/ord (
page 195).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adjusting air distribution
Use the buttonU for automatic mode
or air distribution controls1 and8
(page 195) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls:Adjusting manually
Turn air distribution control1 or8
(page 195) to the desired symbol.
The indicator lamp on the buttonU
goes out.
The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Adjusting automatically
Press buttonU (
page 195).
The indicator lamp on the button
comes on.
The air volume is controlled automati-
cally for the entire vehicle, and the air
distribution is controlled automatically
for each separate half of the vehicle.
Symbol
Function
Z
Directs air to the windshield
and the side defroster vents
b
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
a
Directs air through the center,
side and rear passenger
compartment air vents
Page 202 of 498
200 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)Defrosting
Activating
Press buttonP or0
(page 195).
The indicator lamp on the button
comes on.
The air conditioning switches automatical-
ly to the following functions:
maximum blowing and heating
power
air flows onto the windshield and
the front side windows
the air recirculation mode is
switched offDeactivating
Press buttonP or0
(page 195).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the airflow volume control are
set toU (
page 195) and there is a
high need for cooling, the display
“MAXCOOL” appears.
This provides the fastest possible cooling
of the vehicle interior (when side windows
and tilt/sliding sunroof* are closed).
iThese settings should only be selected
for a short time.
Page 280 of 498
278 Controls in detailUseful featuresElectrical outlet in the rear passenger compartment
1Electrical outlet
2Cover
Switch on ignition (
page 33).
Pull at top of cover2.
Flip cover1 to the left and insert
electrical plug (cigarette lighter type).
Floormats*
Removing
Pull floormats off of retainer pins2 in
direction of arrow1.
Remove the floormats.
Installing
Lay down the floormat.
Press the floormat eyelets4 onto re-
tainer pins5 in direction of arrow3.
iThe electrical outlet can be used to
accommodate electrical consumers
(e.g. air pump, auxiliary lamps) up to a
maximum of 180 W.
Warning!
G
Whenever you are using floormats, make
sure there is enough clearance and that the
floormats are securely fastened.
Floormats should always be securely fas-
tened using eyelets
4
and retainer
pins
5
.
Before driving off, check that the floormats
are securely in place and adjust them if nec-
essary. A loose floormat could slip and
hinder proper functioning of the pedals.
Page 386 of 498

384 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
.
Low beam, right
The right low beam lamp is malfunction-
ing.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:
Visit an authorized Mercedes-Benz
Center as soon as possible.
Parking lamp
front left
The left front parking lamp is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Parking lamp
front right
The right front parking lamp is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Rear foglamp
back-up lamp on
The foglamp is malfunctioning. A back-up
bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Reverse lamp, left
The left backup lamp is malfunctioning.
Replace the bulb as soon as possible.
Reverse lamp, right
The right backup lamp is malfunctioning.
Replace the bulb as soon as possible.
Side marker lamp
front left
The front left side marker lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Side marker lamp
front right
The front right side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
Tail lamp left
back-up lamp on
The left tail lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 387 of 498

385 Practical hints
What to do if …?
Display symbol
Display message
Possible cause
Possible solution
.
Tail lamp right
back-up lamp on
The right tail lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Turn off lamps!
Lamps have been turned on although the
SmartKey in the starter switch is in posi-
tion 0.
Turn off the headlamps.
Turn signal,
front left
The left front turn signal lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Turn signal,
front right
The right front turn signal lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Turn signal,
left mirror
The left turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Have the LEDs replaced as soon as
possible.
Turn signal,
right mirror
The right turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Have the LEDs replaced as soon as
possible.
Turn signal rear left
back-up lamp on
The left rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
Turn signal rear right
back-up lamp on
The right rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.