Page 185 of 489

184 Controls in detailGood visibilityRear window sunshade* (Canada only)
The switch is located in the center console.
1Rear window sunshade switch
Switch on the ignition (
page 36).
Always raise the sunshade fully for its sup-
port against the window frame.Raising the sunshade
Press switch1 briefly.
The sunshade is raised completely.
Stopping the raising procedure
Press switch1 again.
The sunshade stops.
Lowering the sunshade
Press switch1 briefly.
The sunshade is lowered completely.
Stopping the lowering procedure
Press switch1 again.
The sunshade stops.
!Make sure that the movement of the
rear window sunshade is not restricted
by objects on the rear window shelf.
Otherwise, the sunshade or the objects
could be damaged.
Warning!
G
When operating the rear window sunshade,
make sure there is no danger of anyone be-
ing harmed by the raising or lowering
procedure.
The raising or lowering procedure can be
immediately halted by briefly pressing the
switch1.
Briefly press switch1 again to raise or low-
er the rear window sunshade completely.Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
Page 196 of 489
195 Controls in detail
Climate control (CLK 350)
Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 187).The air vents for the rear passenger
compartment are located in the rear
center console.
1Thumbwheel for air volume control for
center air vents
2Left center air vent
3Right center air ventAdjusting air distribution
Push the slide for the left center
vent2 or right center vent3 to the
left, right, up or down.
The air flow is directed in the corre-
sponding direction.
Adjusting air volume
Turn thumbwheel1 to the left or right.
The air volume is increased or
decreased.
iThe temperature at the center air vents
for the rear passenger
compartment2 and3 (
page 195)
is the same as at the dashboard center
air vents.
iFor draft-free ventilation, push
slides2 and3 upward.
Page 209 of 489
208 Controls in detailAutomatic climate control (CLK 500)Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the auto-
matic climate control panel (
page 197).The air vents for the rear passenger
compartment are located in the rear
center console.
1Thumbwheel for air volume control for
center air vents
2Left center air vent
3Right center air ventAdjusting air distribution
Push the slide for the left center
vent2 or right center vent3 to the
left, right, up or down.
The air flow is directed in the corre-
sponding direction.
Adjusting air volume
Turn thumbwheel1 to the left or right.
The air volume is increased or de-
creased.
iThe temperature at the center air vents
for the rear passenger
compartment2 and3 (
page 208)
is the same as at the dashboard center
air vents.
iFor draft-free ventilation, push
slides2 and3 upward.
Page 262 of 489

261 Controls in detail
Driving systems
Switching the Parktronic system
on/off
The Parktronic system can be switched off
manually.
The Parktronic switch is located in the up-
per part of the center console (
page 27).
1Parktronic switch
2Indicator lamp
Switching off the Parktronic system
Press Parktronic switch1.
Indicator lamp2 comes on.Switching on the Parktronic system
Press Parktronic switch1 again.
Indicator lamp2 goes out.
Parktronic system malfunction
If only the red distance segments illumi-
nate and a acoustic warning sounds,
there is a malfunction in the Parktronic
system. The Parktronic system will auto-
matically switch off after 20 seconds and
the indicator lamp in the Parktronic switch
comes on.
Have the Parktronic system checked
by an authorized Mercedes-Benz
Center as soon as possible.If only the red distance segments illumi-
nate and no acoustic warning sounds, the
Parktronic system sensors are dirty or
there is an interference from other radio or
ultrasonic signals. The Parktronic system
will automatically switch off after 20 sec-
onds and the indicator lamp in the Park-
tronic switch comes on.
Switch off the ignition (
page 34).
Clean the Parktronic system sensors
(page 355).
Switch on the ignition.
or
Check the Parktronic system operation
at another location to rule out interfer-
ence from outside radio or ultrasonic
signals.
iThe Parktronic system is automatically
switched on when the ignition is
switched on (
page 34).
Page 275 of 489
274 Controls in detailUseful featuresCup holder in rear seat armrest
Opening cup holder
Briefly press the front of cup holder.
The cup holder slides out slightly.
Pull out the cup holder until it stops.
Closing cup holder
Slide cup holder back in the direction
of arrow1 until it engages.
Ashtrays
Center console ashtray
1Cover plate
2Sliding button
3Ashtray insert
Opening ashtray
Briefly press the bottom of cover
plate1.
The cover plate opens automatically.Removing ashtray insert
Secure vehicle from movement by
setting the parking brake.
Move the gear selector lever to
positionN.
Now you have more room to take out
the insert.
Push sliding button2 to the right.
The ashtray is disengaged and slides a
short way in the direction of arrow3.
Remove the ashtray insert.Warning!
G
Remove front ashtray only with vehicle
standing still. Set the parking brake to se-
cure vehicle from movement. Move the gear
selector lever to positionN and turn off the
engine.
Page 369 of 489
368 Practical hintsWhat to do if …?Lamp in center consoleProblem
Possible cause/consequence
Suggested solution
56
The front passenger front air bag
off indicator lamp illuminates
and remains illuminated with the
weight of a typical adult or some-
one larger than a small individual
on the front passenger seat.
The system is malfunctioning.
Have the system checked as soon as
possible by an authorized
Mercedes-Benz Center.
Read and observe messages in the
multifunction display and follow cor-
rective steps (
page 376).
Warning!
G
If the 56 indicator lamp illuminates
and remains illuminated with the weight of a
typical adult or someone larger than a small
individual on the front passenger seat, do
not have any passenger use the front
passenger seat until the system has been
repaired.
Page 378 of 489

377 Practical hints
What to do if …?
Display message
Possible cause/
consequence
Possible solution
Front passenger
air bag
activated
see Oper.’s Man.
Monitor the 56indicator lamp on the center console (
page 27) and the mul-
tifunction display in the instrument cluster (
page 24) for the following:
With the seat unoccupied and the ignition turned on,
the 56indicator lamp on the center console should illuminate and remain
illuminated, indicating that the OCS (
page 77) has deactivated the air bag.
the message
Front passenger air bag activated see Oper.’s Man.
or the mes-
sage
Front passenger air bag deactivated see Oper.’s Man.
should not ap-
pear in the multifunction display at any time the seat is unoccupied. Wait at last
60 seconds for the system to complete the necessary check cycles and to make
sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. Depend-
ing on the front passenger classification sensed by the OCS (
page 77), the
56indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the system
checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!
G
If the 56indicator lamp remains
out even after performing the above correc-
tive steps, do not have any children 12 years
old and under and other small individuals
use the front passenger seat until the sys-
tem has been repaired.
Page 380 of 489

379 Practical hints
What to do if …?
Display message
Possible cause/
consequence
Possible solution
Front passenger
air bag
deactivated
see Oper.’s Man.
Monitor the 56indicator lamp on the center console (
page 27) and the mul-
tifunction display in the instrument cluster (
page 24) for the following:
With the seat unoccupied and the ignition turned on,
the 56indicator lamp on the center console should illuminate and remain
illuminated, indicating that the OCS (
page 77) has deactivated the air bag.
the message
Front passenger air bag activated see Oper.’s Man.
or the
message
Front passenger air bag deactivated see Oper.’s Man.
should not
appear in the multifunction display at any time the seat is unoccupied. Wait at last
60 seconds for the system to complete the necessary check cycles and to make
sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. Depend-
ing on the front passenger classification sensed by the OCS (
page 77), the
56indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the system
checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!
G
If the 56indicator lamp remains
illuminated with an adult occupant on the
front passenger seat even after performing
the above corrective steps, do not have any
passenger use the front passenger seat until
the system has been repaired.