Page 36 of 474

35 Getting started
Adjusting
Adjusting
Seats
The seats can be adjusted either manually 
or electrically, depending on the vehicle’s 
equipment.
For more information, see “Seats” 
(page 109).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 in an excessively reclined position as 
this can be dangerous. You could slide un-
der the seat belt in a collision. If you slide 
under it, the belt would apply force at the ab-
domen or neck. That could cause serious or 
fatal injuries. The seat back and seat belts 
provide the best restraint when the wearer 
is in a nearly upright position and belts are 
properly positioned on the body. Your seat 
must be adjusted so that you can correctly 
fasten your seat belt (
page 45).
Never place hands under the seat or near 
any moving parts while a seat is being 
adjusted.
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take it 
with you, and lock the vehicle.
Even with the SmartKey removed from the 
starter switch, 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. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious 
personal injury. 
     
        
        Page 39 of 474
38 Getting startedAdjustingHead restraint tilt
Manually adjust the angle of the head 
restraint.
Push or pull on the lower edge of the 
head restraint cushion.
For more information, see “Seats” 
(
page 109).Power seat* adjustment
The seat adjustment switches are located 
on the respective front door.
1Head restraint height
2Seat height
3Seat cushion tilt
4Seat fore and aft adjustment
5Seat backrest tilt
Switch on the ignition (
page 33).
or
Open the respective door.Seat fore and aft adjustment
Press switch forward or backward in 
direction of arrow4.
Adjust seat to a comfortable seating 
position 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.iThe memory function* (
page 115) 
lets you store the settings for the pow-
er seat*, the steering wheel adjust-
ment (electrical*) and the exterior rear 
view mirrors. 
     
        
        Page 65 of 474

64 Safety and SecurityOccupant safetyWarning!
G
To reduce the risk of injury when the front 
air bags inflate, it is very important for the 
driver and front passenger to always be in a 
properly seated position and to wear their 
respective seat belts.
For maximum protection in the event of a 
collision always be in normal seated position 
with your back against the backrest. Fasten 
your seat belt and ensure it is properly posi-
tioned on your body.
Since the air bag inflates with considerable 
speed and force, a proper seating and hands 
on steering wheel position will help to keep 
you at a safe distance from the air bag. 
Occupants who are unbelted, out of position 
or too close to the air bag can be seriously 
injured or killed by an air bag as it inflates 
with great force in the blink of an eye:
Sit properly belted in a nearly upright 
position with your back against the seat 
backrest.
Adjust the driver seat as far as possible 
rearward, still permitting proper opera-
tion of vehicle controls. The distance 
from the center of the driver’s breast-
bone to the center of the air bag cover 
on the steering wheel must be at least 
10 in (25 cm) or more. You should be 
able to accomplish this by a combina-
tion of adjustments to the seat and 
steering wheel. If you have any prob-
lems, please see your authorized 
Mercedes-Benz Center.
Do not lean your head or chest close to 
the steering wheel or dashboard.
Keep hands on the outside of steering 
wheel rim. Placing hands and arms in-
side the rim can increase the risk and 
potential severity of hand/arm injury 
when driver front air bag inflates.
Adjust the front passenger seat as far as 
possible rearward from the dashboard 
when the seat is occupied.
Occupants, especially children, should 
never place their bodies or lean their 
heads in the area of the door or the rear 
side trim panel where the front side im-
pact air bag and/or rear side impact 
air bag* inflates. This could result in se-
rious injuries or death should the air bag 
be triggered. Always sit nearly upright, 
properly use the seat belts and use an 
appropriately sized infant or toddler re-
straint or booster seat recommended 
for the size and weight of the child.
Failure to follow these instructions can re-
sult in severe injuries to you or other 
occupants.
If you sell your vehicle, it is important that 
you make the buyer aware of this safety in-
formation. Be sure to give the buyer this 
Operator’s Manual.  
     
        
        Page 110 of 474

109 Controls in detailSeats
Seats
For information on seat adjustment, see 
“Adjusting” (
page 35).
Front seat active head restraintsYou cannot remove the active head re-
straints on the driver’s and passenger’s 
seat.
For removal of the active head restraints 
we recommend that you contact an autho-
rized Mercedes-Benz Center.
For information on head restraint 
adjustment, see “Seats” (
page 35).
For information on active head restraints, 
see “Active head restraint” (page 73).
Rear seat head restraints
Warning!
G
For your protection, drive only with properly 
positioned head restraints.
Adjust head restraint so that the head re-
straint 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 ac-
cident or similar situation.
Do not drive the vehicle without the seat 
head restraints. Head restraints are 
intended to help reduce injuries during an 
accident.
iAdjust the head restraint in such a way 
that it is as close to the head as 
possible.
Warning!
G
For safety reasons, always drive with the 
rear head restraints in the upright position 
when the rear seats are occupied.
Keep the area around head restraints clear 
of articles (e.g. clothing) to not obstruct the 
folding operation of the head restraints. 
     
        
        Page 113 of 474

112 Controls in detailSeats
1Release button
Removing rear seat head restraints
Fold back head restraint (
page 110).
Pull head restraint to its highest 
position.
Push release button1 and pull out 
head restraint.
Installing rear seat head restraints
Insert head restraint and push it down 
until it engages.
Push button1 and adjust head 
restraint to desired position.
Lumbar support*
The curvature of the driver’s seat can be 
adjusted to help enhance lower back sup-
port and seating comfort.
1Adjustment lever
Move adjustment lever1 in the direc-
tion of arrows until you have reached a 
comfortable seating position.
Warning!
G
For your protection, drive only with properly 
positioned head restraints.
Adjust head restraint so that the head re-
straint 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 ac-
cident 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.
Do not interchange head restraints from 
front and rear seat.