Page 37 of 406
34 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Opening the trunk
The trunk lid will swing open automatically. You should 
always make sure there is sufficient clearance.
A minimum height clearance of 5.75 ft. (1.75 m) is 
required to open the trunk lid.
Press transmit buttonŠ until trunk lid is open.Important!
Do not place remote control in trunk since trunk is 
locked when the lid is closed if the vehicle is centrally 
locked.
Notes:
If the trunk was previously locked separately, it will 
remain locked, see page 41.
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        Page 45 of 406
42 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Pull handle (arrow) to open the trunk lid.
The trunk lid will swing open automatically. You should 
always make sure there is sufficient clearance.
A minimum height clearance of 5.75 ft. (1.75 m) is 
required to open the trunk lid.Lower trunk lid using handle (1) and close it with hands 
placed flat on trunk lid. Please remember to keep your 
fingers out of the space between the lid and the vehicle.
P 88.50-2128-26
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        Page 48 of 406

45 Trunk lamp
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Trunk lid release switch
The switch is located on the driver’s door.
The trunk lid will swing open automatically. You should 
always make sure there is sufficient clearance.
A minimum height clearance of 5.75 ft. (1.75 m) is 
required to open the trunk lid.
To open the trunk, the vehicle must be at standstill. 
Press switch until trunk lid is open.
The indicator lamp in the switch remains on with trunk 
lid open.Notes:
The trunk can also be opened by using the remote 
control. Press Šbutton.
The trunk lid cannot be opened by the switch or the 
remote control when previously locked separately with 
the mechanical key. To open, see page 41.
The trunk lid cannot be opened with the trunk lid 
release switch when the vehicle was previously locked 
with the remote control. To unlock vehicle with the 
remote control, see page 31.
Trunk lamp
The trunk lamp will switch off after approximately 
10 minutes if the trunk lid is left open.
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        Page 53 of 406

50 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Power seat
The switches are located in each front door.
We recommend to adjust the power seat in the following 
order:
1Seat, up / down
Press the switch (up / down direction) until 
comfortable seating position with still sufficient 
headroom is reached.2Seat adjustment, fore / aft
Press the switch (fore / aft direction) until a 
comfortable seating position is reached 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.
3Seat cushion tilt
Press the switch in the direction of the arrow until 
your legs are lightly supported. 
4Backrest tilt
Press the switch in the direction of the arrow until 
your arms are slightly angled when holding the 
steering wheel.
5Head restraint
The height of the head restraint is adjusted 
automatically with the seat so that the back of the 
head is supported approximately at ear level. Adjust 
the head restraint using the switch to support the 
back of your head approximately at ear level.
For exterior rear view mirrors, see page 91;
inside rear view mirror, see page 90;
steering wheel adjustment, see page 89.
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        Page 55 of 406
52 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Manual seat
(Standard equipment on model C 240)We recommend to adjust the seat in the following order:
1Fore/aft adjustment
Lift handle (1), slide seat to desired position and 
allow handle to reengage. Check for proper 
engagement before driving.
2Seat cushion tilt
Turn handwheel (2) forward or backward.
3Seat height adjustment
Press the switch (3) in the direction of the arrow 
until your legs are lightly supported.
4Backrest tilt
Press the switch (4) in the direction of the arrow 
until your arms are slightly angled when holding 
the steering wheel.
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        Page 56 of 406
53 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index 5Head restraint height
Raising:
Pull up on head restraint.
Lowering:
Push button (5) and push down on head restraint.
Adjust head restraint to support the back of the head 
approximately at ear level. The head restraint 
inclination can also be adjusted manually.Head restraint inclination
Push or pull the head restraint in direction of arrow.
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        Page 57 of 406

54 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Important!
Prior to operating the vehicle, the driver should check 
and adjust if necessary the seat height, seat position 
fore and aft, and backrest angle to insure adequate 
control, reach and comfort. The head restraint should 
also be adjusted for proper height. See also airbag 
section on page 73 for proper seat positioning.
In addition, also adjust the steering wheel to ensure 
ad eq uate  con tr ol, r each,  operation  and  com fort. B ot h the  
inside and outside rear view mirrors should be adjusted 
for adequate rearward 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 
Standard 213 and Canadian Motor Vehicle Safety 
Standard 213.
All seat, head restraint, steering wheel, and rear view 
mirror adjustments as well as fastening of seat belts 
should be done before the vehicle is put into motion.
Wa r n i n 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 vehicle to deactivate the passenger 
side front airbag when it is properly installed. 
Otherwise they will be struck by the airbag when it 
inflates in a crash. If this happens, serious or fatal 
injury can result.
According to accident statistics, children are safer 
when properly restrained in the rear seating 
positions than in the front seating 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, 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.
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        Page 60 of 406

57 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Multicontour seat (optional)
We recommend to adjust the multicontour seat in the 
following order:
1Seat cushion depth
2Backrest bottom
3Backrest center
4Side bolster adjustmentSome models may be equipped with driver’s 
multicontour seat. These seats have movable seat 
cushions and inflatable air cushions built into the 
backrest to provide additional lumbar and side support.
The seat cushion movement and amount of backrest 
cushion height and curvature can be continuously 
varied with regulators (1, 2 and 3) after turning the 
electronic key in starter switch to position 2.
The side bolsters of the backrest can be adjusted with 
rocker switch (4):
•press to the left – 
increase side support,
•press to the right – 
decrease side support.
If the engine is turned off, the last cushion setting is 
retained in memory, and automatically adjusts the 
cushion to this setting when the engine is restarted.
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