Page 28 of 514
27 At a glance
Center console
Center console
Upper part
Item
Page
1
Seat heater*, driver’s side
Seat ventilation*, driver’s
side
122
123
2
Parktronic system* deacti-
vation switch (Canada only)
272
3
ESP
® control switch
89
4
Hazard warning flasher
switch - switching on/off
133
5
Central unlocking switch
Central locking switch
118
118
6
Switch for lowering rear
seat head restraints
120
7
Tow-away alarm switch
Anti-theft alarm system
indicator lamp
94
94
Item
Page
8
Seat heater*,
passenger side
Seat ventilation*,
passenger side
122
123
9
Front passenger front air
bag off indicator lamp
81,
381
a
Audio system,
or
COMAND* (see separate
operating instructions)
145
b
Climate control (CLK 350)
Automatic climate control
(CLK 500/CLK 55 AMG)
Rear window defroster
186
196,
185
Page 202 of 514

201 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Turn air distribution control1 or8
(page 197) 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.
Opening center and side air vents
Turn thumbwheels 2, 6 and 7
(page 196) upward.
The center air vents 5 and 8 and side
air vents 1 and 3 (
page 196) are
open.Closing center and side air vents
Turn thumbwheels 2, 6 and 7
(page 196) downward.
The center air vents 5 and 8 and side
air vents 1 and 3 (
page 196) are
closed.
Adjusting air volume
Use buttonU (
page 197) for auto-
matic mode or air volume controls
orQ (
page 197) to adjust air volume
manually.
Seven blower speeds are available.
Press button to decrease
orQ (
page 197) to increase air
volume to the desired level.
The indicator lamp on the buttonU
goes out.
The automatic air distribution remains
switched on.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
side windows.
Activating
Press buttonP or0
(page 197).
The indicator lamp on the button
comes on.
iYou can also turn the air distribution
control to a position between two
symbols
iKeep this setting selected only until the
windshield or the side windows are
clear again.
Page 337 of 514

336 OperationTires and wheelsSteps for determining correct load limit
The following steps have been developed
as required of all manufacturers under Title
49, Code of U.S. Federal Regulations, Part
575 pursuant to the “National Traffic and
Motor Vehicle Safety Act of 1966”.
Step 1 (Vehicles equipped with placard
Example A)
Locate the statement “The combined
weight of occupants and cargo should
never exceed XXX kg or XXX lbs.” on
your vehicle’s placard.
Step 1 (Vehicles equipped with placard
Example B)
Locate the heading “Vehicle Capacity
Weight” on your vehicle’s placard.
Step 2
Determine the combined weight of the
driver and passengers that will be
riding in your vehicle.Step 3
Subtract the combined weight of the
driver and passengers from XXX kilo-
grams or XXX lbs.
Step 4
The resulting figure equals the avail-
able amount of cargo and luggage load
capacity. For example, if the “XXX”
amount equals 1400 lbs and there will
be five 150 lbs passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs.
(1400-750 (5 x150) = 650 lbs)
Step 5
Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may not safely
exceed the available cargo and luggage
load capacity calculated in step 4.Step 6 (if applicable)
If your vehicle will be towing a trailer,
load from your trailer will be trans-
ferred to your vehicle. Consult this
manual to determine how this reduces
the available cargo and luggage load
capacity of your vehicle (
page 338).
The following table shows examples on
how to calculate total and cargo load
capacities with varying seating configura-
tions and number and size of occupants.
The following examples use a load limit
of 1500 lbs. This is for illustration
purposes only. Make sure you are using
the actual load limit for your vehicle stated
on the vehicle’s placard (
page 334).