Page 89 of 464

89 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if neither door nor trunk is opened,
the SmartKey is not inserted in the starter
switch, or the central locking switch is not
activated.
Global locking
Press button‹.
All turn signal lamps flash three times.
The locking knobs in the doors move
down.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
The SmartKey will then function as fol-
lows:
Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
Global unlocking
Press buttonŒ twice.
Global locking
Press button‹.Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. It is possible for children
to open a locked door from the inside, which
could result in an accident and/or serious
personal injury.
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Page 92 of 464

92 Controls in detailLocking and unlockingIf the SmartKey with KEYLESS-GO* is valid,
your vehicle unlocks
the doors
the glove box
the trunk lid
the fuel filler flap
SmartKey with KEYLESS-GO1‹ Lock button
2Š Opening button for trunk lid
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 75)For more information on using the
SmartKey buttons, see “SmartKeys”
(
page 88)
Important notes on using KEYLESS-GO*
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 88).
You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the remote control).
Always carry the SmartKey with
KEYLESS-GO with you.
Never store the SmartKey with
KEYLESS-GO together with:
electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO
metallic objects such as coins or
metal foil
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO 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.iYou can also open and close the soft
top (
page 222) and the power win-
dows (page 213) using the
SmartKey.
iIf the vehicle has been parked for a
longer period of time, you must pull the
door handle in order to activate the
KEYLESS-GO function.
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Page 94 of 464

94 Controls in detailLocking and unlockingFactory setting
Global unlocking
Pull the door handle.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if neither door nor trunk is opened.
Global locking
Press lock button at door handle
(page 56) or trunk lid (
page 95).Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you, grasp the driv-
er’s door handle only the driver’s door and
the fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel filler
flap
Grasp the driver’s door handle.
Global unlocking
Grasp the door handle on the pas-
senger side.
Global locking
Press lock button at door handle or
trunk lid.Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
iThe vehicles could inadvertently be un-
locked if the SmartKey with
KEYLESS-GO is within 3 ft (1 m) of the
vehicle and:
the door handle is splashed with
water, or
you attempt to clean the door
handle.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. It is possible for children
to open a locked door from the inside, which
could result in an accident and/or serious
personal injury.
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Page 108 of 464

108 Controls in detailLocking and unlockingLocking and unlocking from the inside
You can lock or unlock the doors and the
trunk from inside using the central locking
switch. This can be useful, for example, if
you want to lock the vehicle before starting
to drive.
The fuel filler flap will not be locked or un-
locked with the central locking switch.The switch is located in the center console.
Central locking switch1Locking
2Unlocking
Locking
Press upper half1 of the central lock-
ing switch.
If both doors are closed, the vehicle
locks.Unlocking
Press lower half2 of the central lock-
ing switch.
The vehicle unlocks.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* 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.
iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.
If the vehicle was previously centrally
locked with the SmartKey or the
SmartKey with KEYLESS-GO*, it will
not unlock using the central locking
switch.
If the vehicle was previously locked
with the central locking switch
while in the global remote control
mode, the vehicle is completely un-
locked when a door is opened from
the inside.
while in the selective remote con-
trol mode, only the door opened
from inside is unlocked.
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Page 127 of 464

127 Controls in detail
Instrument cluster
Coolant temperature indicatorDuring severe operating conditions, e.g.
stop-and-go traffic, the coolant tempera-
ture may rise close to 120°C.
The engine should not be operated with
the coolant temperature above 120°C. Do-
ing so may cause serious engine damage
which is not covered by the
Mercedes-Benz Limited Warranty.
Trip odometer
Make sure you are viewing the trip odome-
ter display (
page 129).
I f i t i s n o t d i s p l a y e d , p r e s s b u t t o nè
orÿ on the multifunction steering
wheel repeatedly until the trip odome-
ter appears.
Press and hold reset button1 on the
instrument cluster (
page 126) until
the trip odometer is reset.
Tachometer
The red marking on the tachometer de-
notes excessive engine speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
CLK 55 AMG
The tachometer of the CLK 55 AMG does
not have a red marking denoting excessive
engine speed
To help protect the engine, the fuel supply
is interrupted if the engine is operated at
an excessive engine speed.
Warning!
G
Driving when your engine is overheated
can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously
burned.
Steam from an overheated engine can
cause serious burns and can occur just
by opening the hood. Stay away from
the engine if you see or hear steam com-
ing from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.iExcessive coolant temperature triggers
a warning in the multifunction display
(page 329) and the red coolant warn-
ing lamp in the instrument cluster
comes on (
page 315).
!Avoid driving at excessive engine
speeds, as it may result in serious en-
gine damage that is not covered by the
Mercedes-Benz Limited Warranty.
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Page 133 of 464
133 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Menu8
Commands/submenusStandard dis-
play
AUDIO
NAVI*
Distronic*
Malfunction
memory
Settings
Trip computer
Telephone
Digital speed-
ometer
Select radio
station
Activate
route guid-
ance
Call up set-
tings
Call up malfunc-
tion messages
Reset to factory
settings
Fuel consumption
statistics after
start
Load phone
book
Call up FSS
Select
satellite ra-
dio station
Instrument clus-
ter submenu
Fuel consumption
statistics since
the last reset
Search for
name in
phone book
Check engine oil
level
Operate CD
player*
Time submenu
Call up range
Operate cas-
sette player
Lighting sub-
menuVehicle sub-
menuConvenience
submenu
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Page 152 of 464
152 Controls in detailControl system
Move the selection marker with
theæ orç button to
the
Convenience
submenu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
Mirror adjustment parking aid
.
The selection marker is on the current
setting.
Pressæ orç to switch function on or
off
.
Trip computer menu
Use the trip computer menu to call up sta-
tistical data on your vehicle. The following
information is available:Fuel consumption statistics after start
Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.
Press buttonj ork repeatedly
until you see this message in the left
display:
After start
.
1Distance driven since start
2Time elapsed since start
3Average speed since start
4Average fuel consumption since start
Function
Page
Fuel consumption statistics after
start
152
Fuel consumption statistics
since last reset
153
Call up range (distance to empty)
153
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Page 153 of 464

153 Controls in detail
Control system
Fuel consumption since last reset
Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
After reset
.1Distance driven since last reset
2Time elapsed since last reset
3Average speed since last reset
4Average fuel consumption since last re-
set
Resetting fuel consumption statistics
Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.
Press buttonj ork repeatedly
until you see the reading that you want
to reset in the display.
Press and hold the reset button in the
instrument cluster (
page 126) until
the value is reset to 0.Call up range (distance to empty)
Press buttonÿ orè repeatedly
until you see the first function of the
Trip computer menu.
Press buttonj ork repeatedly
until you see this message in the dis-
play:
Range
.
In the display you will see the calculat-
ed range based on the current fuel tank
level.
iAll statistics stored since the last en-
gine start will be reset approximately
four hours after the SmartKey in the
starter switch is turned to position0 or
removed from the starter switch.
Resetting will not occur if you turn the
SmartKey back to position1 or2 with-
in this time period.
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