Page 113 of 506

112 Controls in detailSeatsFor information on seat adjustment, see
“Adjusting” (
page 37).
Easy-entry/exit feature
This feature allows for easier entry into and
exit from the vehicle.
The easy-entry/exit feature can be
activated or deactivated in the Convenience
submenu of the control
system (
page 156).When exiting the vehicle, with the
easy-entry/exit feature activated and
depending on your selection, the steering
wheel tilts upwards and/or the driver’s
seat moves a few inches to the rear when
you:
remove the SmartKey from the starter
switch,
or
open the driver’s door with the
SmartKey in starter switch position0
or1 or the KEYLESS-GO* start/stop
button (
page 35) in position1.
Warning!
G
You must make sure that no one can be-
come trapped or injured by the moving
steering wheel and driver’s seat when the
easy-entry / exit feature is activated.
To cancel seat /steering wheel movement,
do one of the following:
Press the seat adjustment switch
(page 38).
Move the steering column stalk
(page 40).
Press the memory position switch
(page 120).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver's door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
iIf the current position for the steering
wheel is in the uppermost tilt position,
the steering wheel will no longer be
able to move upward when the
easy-entry/exit feature is activated.
Page 120 of 506

119 Controls in detail
Memory function
Memory function
You can store up to three different settings
per SmartKey or SmartKey with
KEYLESS-GO*.
The following settings are stored when
using the buttons on the driver’s door:
Driver’s seat, backrest and head
restraint position
Steering wheel position
Exterior rear view mirror position
These key-dependent memory settings
can be deactivated if desired. For informa-
tion on key-dependent memory settings,
see “Setting key-dependency”
(
page 157).The following settings are not
key-dependent. They are stored when
using the buttons on the passenger door:
Front passenger seat, backrest and
head restraint position
!Prior to operating the vehicle, the
driver should check and adjust the seat
height, seat position fore and aft, and
seat backrest angle if necessary, to
ensure adequate control, reach and
comfort. The head restraint should also
be adjusted for proper height. See also
the section on air bags (
page 61) for
proper seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, opera-
tion and comfort. Both the interior and
exterior rear view mirrors should be
adjusted for adequate rear vision.
Fasten seat belts. Infants and small
children should be seated in a properly
secured restraint system that complies
with U.S. Federal Motor Vehicle Safety
Standards 213 and 225 and Canadian
Motor Vehicle Safety Standards 213
and 210.2.
Warning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.
Page 157 of 506

156 Controls in detailControl systemConvenience submenu
Access the
Convenience
submenu via the
Settings
menu. Use the
Convenience
sub-
menu to change the settings for a number
of convenience features.
The following functions are available:Activating easy-entry/exit feature
Use this function to activate and deacti-
vate the easy-entry/exit feature.
Move the selection marker with
buttonæ orç to the Convenience
submenu.
Press buttonj ork repeatedly
until the message
Function
Easy-entry feature appears in the
multifunction display.
The selection marker is on the current
setting.
Press buttonæ orç to change
the easy-entry/exit setting.
Function
Page
Activating easy-entry/exit
feature
156
Setting key-dependency
157
Setting parking position for exte-
rior rear view mirror
157
Warning!
G
You must make sure no one can become
trapped or injured by the moving steering
wheel and the driver’s seat when the
easy-entry/exit feature is activated.
To cancel seat/steering wheel movement,
do one of the following:
Press the seat adjustment switch
(page 38).
Move the steering column stalk
(page 40).
Press the memory position switch
(page 120).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
Page 363 of 506

362 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
56
The front passenger front air bag
off indicator lamp does not illu-
minate and/or does not remain
illuminated with the weight of a
typical 12-month-old child in a
standard child restraint or less
on the front passenger seat.
The system is malfunctioning.
Make sure that there is nothing be-
tween seat cushion and child seat and
check installation of the child seat.
Make sure that no objects applying
supplemental weight onto the seat
are present.
If the front passenger front air bag off
indicator lamp remains out, have the
system checked as soon as possible
by an authorized Mercedes-Benz Cen-
ter. Do not transport a child on the
front passenger seat until the system
has been repaired.
Also note any messages in the multi-
function display and follow corrective
steps (
page 369).
Warning!
G
If the 56 indicator lamp does not il-
luminate or remains out with the
weight of a typical 12-month-old child in a
standard child restraint or less on the front
passenger seat, do not transport a child on
the front passenger seat until the system
has been repaired.
Page 370 of 506
369 Practical hints
What to do if …?
Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
activated
see Oper.’s Man.
Front passenger front air bag is activated
while driving even though a child, small in-
dividual, or object below the system's
weight threshold is on the front passenger
seat, or the front passenger seat is empty.
Objects on the seat or forces acting on
the seat may make the system sense sup-
plemental weight.
Stop the vehicle in a safe location as soon
as possible and check the following:
Make sure that there is nothing be-
tween seat cushion and child seat and
check installation of the child seat.
Make sure that no objects applying
supplemental weight onto the seat are
present. The system may recognize
such supplemental weight and sense
that an occupant on the front passen-
ger seat is of a heavier weight than ac-
tually present.
(Continued on next page)
Page 371 of 506

370 Practical hintsWhat to do if …?Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
activated
see Oper.’s Man.
If performing any of the above corrective
steps is successful, the message
Front
passenger airbag deactivated see
Oper.’s Man.
will appear in the
multifunction display, confirming the situ-
ation has been remedied. Note that after
performing the corrective steps, it may
take up to 60 seconds for the message
Front passenger airbag deactivated
see Oper.’s Man.
to appear.
If the message
Front passenger airbag
activated see Oper.’s Man.
remains on
in the multifunction display and/or the
56
indicator lamp remains out even
after performing the above corrective
steps, have the system checked as soon
as possible by an authorized
Mercedes-Benz Center.
Warning!
G
If the message
Front passenger airbag
activated see Oper.’s Man.
remains
on in the multifunction display and/or the
56 indicator lamp remains out even
after performing the above corrective steps,
do not have any children12 years old and
under and other small individuals use the
front passenger seat until the system has
been repaired.
Page 466 of 506

465 Technical terms
Restraint systems
Seat belts, child restraints, lower an-
chors and tethers for children (LATCH).
As independent systems, their protec-
tive functions complement one anoth-
er.
Rim
(
page 337)
Roll bars
Occupant protection system which
consists of tubular steel, integrated in
the rear head restraints. The roll bars
are lowered into the car body during
normal driving conditions and raised
automatically in an accident or in a crit-
ical driving situation.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of
positionP without SmartKey turned
and brake pedal depressed.
Sidewall
(
page 337)Soft top
Soft top roof that can be opened by
pulling and closed by pressing a switch
and stored in the soft top compartment
in the trunk area.
Speedshift (CLK 500, CLK 55 AMG)
Steering wheel gearshift control. You
can change the gears yourself with the
steering wheel gearshift buttons.
SRS
(S
upplemental R
estraint S
ystem)
Air bags, air bag control unit (with
crash sensor), emergency tensioning
device. Though independent systems,
they are closely interfaced to provide
effective occupant protection.
Page 469 of 506

468 IndexAir bags 61
Children 62
Front 65
Head-thorax 66
Passenger 65
Rear side-impact 67
Safety guidelines 64
Air conditioning (cooling) 187
Turning off 188, 198
Turning on 188, 198
Air conditioning refrigerant 456
Air distribution
Adjusting 184, 194
Air pressure 335
Air pressure see Tire inflation pressure
Air recirculation mode 186, 195
Activating 186, 196
Deactivating 187, 196
Air vents, rear passenger compartment
Adjustable 189, 200
Air volume
Adjusting 184, 194
Alarm
Audible 83, 91, 92
Canceling 91, 92
Visual 89Alarm system
Anti-theft 89
Alignment bolt 424
Alignment bolt (vehicle tool kit) 461
Anticorrosion/antifreeze 459
Antiglare
Auto-dimming 176
Antilock brake system (ABS) 461
Anti-theft alarm system
Arming 90
Canceling alarm 91, 92
Disarming 90
Anti-theft systems 89
Anti-theft alarm system 89
Immobilizer 89
Tow-away alarm 91
Aquaplaning see Hydroplaning
Armrest
Storage box 271
Storage compartments 270
Ashtray (Center console) 273
Opening 273
Reinstalling 273
Removing 273
Ashtray (Rear seat) 273
Opening 274Aspect ratio 335
At the gas station 302
ATF (automatic transmission fluid) 309
AUDIO menu 139
Selecting radio station 139
Selecting satellite radio* station 140
Audio system 201
Audio and telephone, operation 201
Button and soft key operation 204
CD operation 218
Operating and display elements 202
Operating safety 201
Operation 204
Radio operation 209
Sound system 201
Switching off 204
Switching on 204
Telephone* operation 224
Auto-dimming for rear view mirror 176
Automatic central locking
Activating/deactivating
(control system) 155
Locking/unlocking
(central locking switch) 110