Page 41 of 480

40 Getting startedAdjusting
Seat adjustment
The seat adjustment switch is located in
the door.
1Head restraint height
2Seat height
3Seat cushion tilt
4Seat cushion depth
5Seat fore and aft adjustment
6Backrest tilt
Switch on the ignition (
page 36).
or
Open the respective door.Seat fore and aft adjustment
Press the switch forward or backward
in direction of arrow 5.
Adjust seat to a comfortable seating
position that still allows you to reach
the accelerator / brake pedal safely.
The position should be as far to the rear
as possible, consistent with ability to
properly operate controls.
Warning!
G
Children 12 years old and under must never
ride in this vehicle, except in a
Mercedes-Benz authorized BabySmart
TM
compatible child seat, which operates with
the BabySmart
TM system installed in the ve-
hicle to deactivate the passenger front air-
bag when it is properly installed. Otherwise
they will be struck by the airbag when it in-
flates in a crash. If this happens, serious or
fatal injury will result.
Infants and small children must be seated in
an appropriate infant or child restraint sys-
tem, which is properly secured with the ve-
hicle’s seat belt, fully in accordance with the
child seat manufacturer’s instructions.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.
iThe memory function (
page 121) lets
you store the settings for the seat posi-
tion together with the settings for the
steering wheel and the exterior rear
view mirrors.
!When moving the seats, make sure
there are no items in the footwell or be-
hind the seats. Otherwise you could
damage the seats.
Page 117 of 480

116 Controls in detailSeatsLumbar support
You can adjust the contour of the seat’s
lumbar support to help enhance support to
your spine.
The thumbwheel is located on the lower
side of the seat.
1Thumb wheel
Switch on the ignition (
page 36).
Set the lumbar support between 0
and 5.
Multicontour backrest*
The multicontour backrest has inflatable
air cushions built into the seat backrest to
provide additional lumbar and side sup-
port.
The seat backrest cushion height and cur-
vature can be continuously varied with
switches on the lower side of the seat
when the ignition is switched on.
1Shoulder region support
2Side bolsters adjustment
3Massage function (PULSE)
4Lumbar region support
Switch on the ignition (
page 36).Shoulder region support
Press æ or ç on switch1.
The air cushion inflates or deflates.
Lumbar region support
Press k or j on rocker
switch4.
This selects the air cushion you wish to
adjust.
Press æ or ç on rocker
switch4.
The air cushion inflates or deflates.
Side bolsters adjustment
Press switch2 to the right or left.
The lateral support increases or de-
creases.
Page 221 of 480
220 Controls in detailDriving systemsVehicle level controlYour vehicle automatically adjusts its ride
height to:
increase vehicle safety
reduce fuel consumption
The vehicle chassis ride height is raised or
lowered according to the selected level
setting and to the vehicle speed:
With increasing speed, ride height is re-
duced by up to approximately 1 inch
(25 mm).
With decreasing speed, the ride height
is again raised to the selected vehicle
level.Select the level 1 and level 2 settings only
when required by current driving condi-
tions. Otherwise:
Fuel consumption may increase.
Handling may be impaired.
Warning!
G
To help avoid personal injury, keep hands
and feet away from wheel housing area, and
stay away from under the vehicle when low-
ering the vehicle chassis.
iThese height adjustments are so small
that you may not notice any change.
Page 474 of 480

473 Index
Rim 312, 458
Roll bar 75, 458
Lowering 76
Messages in display 379
Raising 76
Warning lamp 27
Roll bar buttons 30
RON 270, 458
Roof see Retractable hardtop
Run Flat Indicator (Canada only) 293
S
Satellite-radio* 141
Seat belt force limiter 74
Seat belts 46, 64, 71
Cleaning 330
Messages in display 379
Warning lamp 340
Seat heating
Switching on 117
Seat ventilation* 120
Switching on 120
Seating capacity 286
Seats
Adjusting height 40
Adjusting lumbar support 116
Adjusting shoulder support 116Heating 117
Massage function 117
Moving 115
Service
Basic service (Service A) 318
Batteries 413
Extended service (Service B) 318
Types 318
Service life (tires) 282
Service System see Maintenance
Setting 151
Convenience functions 156
Daytime running lamp mode 152
Interior lighting delayed
switch-off 155
Lamps and lighting (control
system) 152
Language, multifunction display 150
Locator lighting 153
Lower speed in cruise control 206
Miles/kilometers in
speedometer 149
Night security illumination 154
Radio station 141
Slower speed in cruise control 206
Speedometer display mode 149Time (control system) 150
Units in speedometer 149
Setting the time (hours) 151
Setting the time (minutes) 151
Settings
Convenience functions 156
Resetting all (control system) 146
Selective (SmartKey) 98
Settings menu
Submenus 147
Shelf below rear window, cleaning 330
Shifting
Gear selector lever 162
Gear selector lever positions 164
Into optimal gear range (Automatic
transmission) 169
Shoulder support
Seat adjustment 116
Side marker lamps 392
Cleaning lenses 325
Page 475 of 480

474 IndexSide windows
Automatic closing 194
Automatic opening 193
Closing 192, 193
Closing fully 194
Closing with KEYLESS-GO* 194
Express-close 194
Express-open 193
Opening 192, 193
Opening fully 193
Stopping 194
Synchronizing power windows 194
Sidewall 312, 458, 459
SmartKey 96
Checking the batteries 99
Closing retractable hardtop 200
Global locking 98
Global unlocking 98
Loss of 100
Positions in starter switch 36
Restoring factory settings 98, 104
Selective setting 98
Starting the engine 49
Turning off the engine 60
SmartKey batteries 389
SmartKey positions 36SmartKey with KEYLESS-GO*
Checking the battery 106
Global locking 104
Global unlocking 103
Locking 105
Loss of 106
Messages in display 373
Reprogramming 104
Selective setting 104
Unlocking 100
Snow chains 317
Spare fuses 425
Spare fuses see Vehicle tool kit
Spare tire see Spare wheel 399
Spare wheel 383, 384, 404, 441
Inflating tire 408
Tire inflation pressure 408
Speed settings
Cruise control 206
Speedometer 25
Setting units 149
Sporty driving style 219
SRS 458
Indicator lamp 341
Standing lamps 123, 392
Standing waterDriving instructions 265
Starter battery 279, 413
Starter switch 23, 36
Starter switch positions 36
Starting difficulties 50
Starting position 36
Starting the engine
With the SmartKey 49
With the SmartKey with
KEYLESS-GO* 50
Steering column
In/out adjustment 42
Length adjustment 42
Up/down adjustment 42
Steering wheel
Adjusting 42
Buttons 28
Cleaning 330
Heating* 235
Height adjustment 42
Steering wheel adjustment lever 23
Steering wheel gearshift control 170
SL 55 AMG and SL 65 AMG 172
Vehicles with Sport Package* 170
Stopping
Windows 194