Page 44 of 489

44 Getting started
Adjusting
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
6Seat backrest tilt
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.
Even with the SmartKey or the SmartKey 
with KEYLESS-GO* removed from the start-
er switch or the SmartKey with 
KEYLESS-GO* removed from the vehicle, 
the power seats can be operated when the 
respective door is open. Therefore, do not 
leave children unattended in the vehicle, or 
with access to an unlocked vehicle. A child’s 
unsupervised access to a vehicle could 
result in an accident and/or serious person-
al injury.
Warning!G
Children 12 years old and under must be 
seated and properly secured in an appropri-
ately sized infant restraint, toddler restraint, 
or booster seat recommended for the size 
and weight of the child For additional infor-
mation, see “Children in the vehicle” 
(
page 84).
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. 
     
        
        Page 45 of 489

45 Getting started
Adjusting
Switch on the ignition (page 40).
or
Open the respective door.
Seat fore and aft adjustment 
Press the switch forward or backward 
in direction of arrow 5.
Seat height
Press the switch up or down in 
direction of arrow2.Seat cushion tilt
Press the switch up or down in 
direction of arrow3 until your upper 
legs are lightly supported.
Seat cushion depth
Press the switch forward or backward 
in direction of arrow4 until your legs 
are supported comfortably.
Seat backrest tilt
Press the switch forward or backward 
in direction of arrow6.Head restraint height
Press the switch up or down in 
direction of arrow1.
iThe memory function (page 129) lets you 
store the settings for the driver’s seat position 
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 behind the seats; 
otherwise you could damage the seats. 
Warning!G
For your protection, drive only with properly 
positioned head restraints.
Adjust head restraint so that it is as close to 
the head as possible and the center of the 
head restraint supports the back of the head 
at eye level. This will reduce the potential for 
injury to the head and neck in the event of 
an accident or similar situation.
Do not drive the vehicle without the seat 
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.
iWhen moving the seat fore or aft after 
adjusting the head restraints, the head restraints 
may readjust automatically. 
     
        
        Page 126 of 489

125 Controls in detail
Seats
Multicontour backrest*
The multicontour backrest has inflatable 
air cushions built into the seat backrest 
to provide additional lumbar and side 
support.
The seat backrest cushion height and 
curvature can be continuously varied with 
switches on the lower left side (driver’s 
seat) or the lower right side (passenger 
side) of the seat when the ignition is 
switched on.
1Lumbar region support
2Shoulder region support
3Side bolsters adjustment
4Massage function (PULSE)Switch on the ignition (page 40).
Shoulder region support
Press æ or ç on switch2.
The air cushion inflates or deflates.
Lumbar region support
Press k or j on rocker 
switch1.
This selects the air cushion you wish to 
adjust.
Press æ or ç on rocker 
switch1.
The air cushion inflates or deflates.
Side bolsters adjustment
Press switch3 to the right or left.
The lateral support increases or de-
creases.Massage function (PULSE)
You can reduce muscle tension during long 
trips by periodically using the massage 
function. 
Press button4.
The indicator lamp on button4 comes 
on. The air cushions in the lumbar 
region inflate and deflate rhythmically.
iThe massage function switches off automat-
ically after approximately 8 minutes. The indica-
tor lamp goes out. 
     
        
        Page 232 of 489

231 Controls in detail
Driving systems
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 
reduced by up to approximately 
0.5 inch (12 mm).
With decreasing speed, the ride height 
is again raised to the selected vehicle 
level.The following vehicle level settings can be 
selected when the vehicle is stationary:
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.The ABC vehicle level control button with 
the indicator lamps is located in the lower 
section of the center console.
1Indicator lamp
2Indicator lamp
3ABC vehicle level control button
iThese height adjustments are so small that 
you may not notice any change.
Vehicle 
levelUse forIndicator 
lamps
NormalFor driving on nor-
mal roads.Both 
lamps off
Level 1For driving on 
rough roads or with 
snow chains 
(
page 329).
One 
lamp on
Level 2For driving on very 
rough road surface 
conditions.Both 
lamps on
iThe selected vehicle level setting remains 
stored in memory, even if the engine is turned off 
and restarted. 
     
        
        Page 482 of 489

481 Index
Selective (SmartKey) 107
Speedometer display mode 160
Time 161
Units in speedometer 160
Shift program mode, Automatic 
transmission 177
Shifting, Automatic transmission 172
Shoulder support
Seat adjustment 125
Side marker lamps 410
Cleaning lenses 336
Side windows
Automatic closing 203
Automatic opening 202
Closing 201, 202
Closing fully 203
Closing with KEYLESS-GO* 203
Express-close 203
Express-open 202
Opening 201, 202
Opening fully 202
Stopping 203
Synchronizing power windows 203Sidewall 324
SmartKey see Key, SmartKey
SmartKey with KEYLESS-GO* see 
Key, SmartKey with KEYLESS-GO*
Snow chains 329
Spare tire see Spare wheel 417
Spare wheel 400, 401, 417, 453
Collapsible tire 422, 453
Inflating collapsible tire 422
Tire inflation pressure 422
Speed settings
Cruise control 217
Distronic* 224
Speedometer 27
Setting units 160
Sporty driving style 233
SRS
Indicator lamp 354
Messages in the multifunction 
display 373
Standing lamps 131, 410
Standing water
Driving instructions 275Starter battery 290, 427
Starter switch 25, 40
Starter switch positions 40
Starting difficulties 54
Starting position 40
Starting the engine
With the SmartKey 53
With the SmartKey with 
KEYLESS-GO* 54
Steering column
Up/down adjustment 47
Steering wheel
Adjusting 46
Buttons 30
Cleaning 339
Height adjustment 47
Steering wheel adjustment stalk 25
Steering wheel gearshift control one-touch 
gearshifting*
Automatic transmission 180
Stopping
Windows 203