Page 28 of 376
28 At a glanceDoor control panel
Door control panel
Item
Page
1
Door handle
87
2
Memory function (for stor-
ing seat, mirror and steer-
ing wheel settings)
98
3
Seat adjustment*
32,
34, 93
4
Switches for opening/clos-
ing front door windows
187
5
Switch for rear door win-
dow override
71
6
Switches for opening/clos-
ing rear door windows
187
7
Remote trunk lid release 
switch
88 
     
        
        Page 31 of 376

31 Getting started
Unlocking
Starter switch positionsStarter switch0For removing key
The steering is locked when the key is 
removed from the starter switch. If 
necessary, move steering wheel slight-
ly to allow the locking mechanism to 
engage.
1Power supply to some electrical 
consumers, such as seat adjustment
2Ignition (power supply for all electrical 
consumers) and driving position
3Starting position
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch and lock 
the vehicle. Do not leave children unattend-
ed in the vehicle, or with access to an un-
locked vehicle. Unsupervised use of vehicle 
equipment may cause an accident and/or 
serious personal injury.iVehicles with automatic transmission: 
The SmartKey can only be removed 
from the starter switch with the gear 
selector lever in positionP.
!If the key is left in starter switch 
position0 for an extended period of 
time, it can no longer be turned in the 
starter switch.
Remove the key from the starter 
switch and reinsert.
If the key can still not be turned, the 
battery may not be sufficiently 
charged.
Check the battery and charge it if 
necessary (
page 240).
Get a jump start (
page 306).
To prevent accelerated battery dis-
charge and a possible dead battery, al-
ways remove the key from the starter 
switch. 
     
        
        Page 32 of 376

32 Getting startedAdjusting
AdjustingSeats
The seats can be adjusted either manually 
or electrically, depending on the vehicle’s 
equipment.Warning!
G
All seat, head restraint, steering wheel, and 
rear view mirror adjustments, as well as fas-
tening of seat belts, must be done before 
the vehicle is put into motion.Warning!
G
Do not adjust the driver’s seat while driving. 
Adjusting the seat while driving could cause 
the driver to lose control of the vehicle.
Never ride in a moving vehicle with the seat 
back reclined. Sitting in an excessively re-
clined position can be dangerous. You could 
slide under the seat belt in a collision. If you 
slide under it, the belt would apply force at 
the abdomen or neck. 
That could cause serious or fatal injuries. 
The seat back and seat belts provide the 
best restraint when the wearer is in an up-
right position and belts are properly posi-
tioned on the body. Your seat must be 
adjusted so that you can correctly fasten 
your seat belt (
page 41).
Never place hands under the seat or near 
any moving parts while a seat is being ad-
justed.
Warning!
G
When leaving the vehicle, always remove the 
key from the starter switch, and lock your 
vehicle.
The power seats* can also be operated with 
the driver’s or front passenger door open. 
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle. 
Unsupervised use of vehicle equipment may 
cause an accident and/or serious personal 
injury.
Warning!
G
Children 12 years old and under must never 
ride in the front seat, 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 side front 
airbag when it is properly installed. Other-
wise they will be struck by the airbag when 
it inflates in a crash. If this happens, serious 
or fatal injury will result.
According to accident statistics, children 
are safer when properly restrained in the 
rear seating positions than in the front seat-
ing positions. Infants and small children 
must ride in back seats and be seated in an 
appropriate infant or child restraint system, 
which is properly secured with the vehicle’s 
seat belt and top tether strap, or secured via 
lower anchors and top tether strap, fully in 
accordance with the child seat manufactur-
er’s instructions. 
     
        
        Page 33 of 376

33 Getting started
Adjusting
Manual seat
1Seat fore and aft adjustment
2Seat cushion tilt
3Backrest tilt
4Seat heightSeat fore and aft adjustment
Lift handle1.
Slide seat to the desired position.
Allow handle1 to reengage. 
Check for proper engagement before 
driving.
Adjust to a comfortable seating position 
that still allows you to reach the accelera-
tor/brake pedal safely. The position 
should be as far rearward as possible, 
consistent with ability to properly operate 
controls.
Seat cushion tilt
Turn handwheel2 forward or backward 
until your upper legs are lightly sup-
portedBackrest tilt
Press switch3 in direction of arrow un-
til your arms are slightly angled when 
holding the steering wheel.
Seat height
Press switch4 in direction of arrow un-
til your legs are lightly supported.
Head restraint height
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.
iWhen moving the seat, be sure that 
there are no items in the footwell or be-
hind the seats. Otherwise you could 
damage the seats.
Warning!
G
For your protection, drive only with properly 
positioned head restraints.
Adjust head restraint to support the back of 
the head approximately at ear level.
Do not drive the vehicle without the seat 
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent. 
     
        
        Page 34 of 376

34 Getting startedAdjusting1Release knob
Manually adjust the height of the head 
restraint by pulling it upward. To lower 
the head restraint, push release knob1 
and push down on the head restraint.
Head restraint tilt
Manually adjust the angle of the head 
restraint. Push or pull on the lower 
edge of the head restraint cushion.
More information can be found in the 
“Controls in detail” section (
page 93).Power seat*
Turn the key in the starter switch to 
position1 or2 .
or 
Open the driver’s or front passenger 
door.
The seat adjustment switches are located 
in each front door.
1Head restraint height
2Seat height
3Seat cushion tilt
4Seat fore and aft adjustment
5Backrest tiltSeat fore and aft adjustment
Press the switch forward or backward 
in the direction of arrow4.
Adjust to a comfortable seating posi-
tion that still allows you to reach the 
accelerator/brake pedal safely. The 
position should be as far rearward as 
possible, consistent with ability to 
properly operate controls.iWhen moving the seat, be sure that 
there are no items in the footwell or be-
hind the seat. Otherwise you could 
damage the seat.
With the memory function* 
(page 98), you can store seat 
positions together with settings for the 
steering wheel and the exterior rear 
view mirrors. 
     
        
        Page 37 of 376

37 Getting started
Adjusting
Head restraint height (rear outer seats)
Raising:
Pull up on head restraint.
Lowering:
Push button1.
Push down on head restraint.
Steering wheel Steering wheel adjustment, manual
1Release lever
2Steering column, lengthen or shorten
3Steering column, height
To unlock the steering column, pull 
lever1 out until its stop limit.
Adjust the steering wheel to the de-
sired position.
To lock, press lever1 all the way in un-
til it engages.
The steering wheel is once again 
locked into position.
Warning!
G
For your protection, drive only with properly 
positioned head restraints.
Adjust head restraint to support the back of 
the head approximately at ear level.
Warning!
G
Do not adjust the steering wheel while driv-
ing. Adjusting the steering wheel while driv-
ing, or driving without the adjustment 
locked could cause the driver to lose control 
of the vehicle.
When leaving the vehicle always remove the 
key from the starter switch and lock your ve-
hicle.
The electrical steering wheel adjustment 
feature* can also be operated with the driv-
er’s door open. Do not leave children unat-
tended in the vehicle, or with access to an 
unlocked vehicle. Unsupervised use of 
vehicle equipment may cause an accident 
and/or serious personal injury. 
     
        
        Page 38 of 376

38 Getting startedAdjusting
Steering wheel adjustment, electrical*
The stalk is located on the steering column 
(lower left).
1Steering column, lengthen or shorten
2Steering column, height
Turn the key in the starter switch to 
position1 or2.
or 
Open the driver’s door.Steering column, lengthen or shorten
Move stalk forward or backward in the 
direction of arrow1 until a comfortable 
steering wheel position is reached with 
your arms slightly bent at the elbow.
Steering column, height
Move stalk up or down in the direction 
of arrow2. Make sure that your legs 
can move freely and that all the dis-
plays (including malfunction and indi-
cator lamps) on the instrument cluster 
are clearly visible.
!Do not drive the vehicle until you have 
properly locked the steering column.
If the warning message 
STEERING 
WHEEL ADJUST - LOCK ! is displayed 
while the engine is running, the steer-
ing column is not locked properly 
(
page 276).
iWith the memory function* 
(page 98), you can store steering 
wheel positions together with settings 
for the seats and the exterior rear view 
mirrors. 
     
        
        Page 40 of 376
40 Getting startedAdjusting
Press button1 for the left mirror or 
button3 for the right mirror.
Push adjustment button2 up, down, 
left or right according to the setting de-
sired.
More information can be found in the 
“Controls in detail” section (
page 144).
!If an exterior rear view mirror housing 
is forcibly pushed forward or backward, 
reposition it by applying firm pressure 
until it snaps into place. The mirror 
housing is now properly positioned and 
you can adjust the mirror normally.
iWith the memory function* 
(page 98), you can store exterior rear 
view mirror positions together with 
settings for the seats and the steering 
wheel.