Page 105 of 426
103 Controls in detailSeats
Multicontour seats*
This multicontour seat has a movable seat
cushion and inflatable air cushions built
into the backrest to provide additional
lumbar and side support.
The seat cushion movement, backrest
cushion height and curvature can be
continuously varied with switches on the
side of the seat after switching on ignition.
1Seat cushion depth
2Backrest bottom
3Backrest center
4Backrest side bolster adjustment
Switch on ignition (
page 33).
Seat cushion depth
Adjust the seat cushion depth to the
length of your upper leg using
switch1.
Backrest contour
Adjust the contour of the backrest to
the desired position using switches2
and3.
Backrest side bolsters
Adjust the backrest side bolsters so
that they provide good lateral support
using switch4.
Page 107 of 426

105 Controls in detail
Memory function*
Memory function*
You can store up to three different settings
per SmartKey.
The following settings are stored when
using the buttons on the driver’s door:
Driver’s seat, backrest and head
restraint position
Steering wheel position
Exterior rear view mirror positions
These key-dependent memory settings
can be deactivated if desired. For informa-
tion on key-dependent memory settings,
see “Setting key-dependency”
(
page 145).The following settings are not
key-dependent. They are stored when
using the buttons on the front passenger
door:
Front passenger seat, backrest and
head restraint position
!Prior to operating the vehicle, the
driver should check and adjust the seat
height, seat position fore and aft, and
seat backrest angle if necessary, to
ensure adequate control, reach and
comfort. The head restraint should also
be adjusted for proper height. See also
the section on air bags (
page 61) for
proper seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, opera-
tion and comfort. Both the interior and
exterior rear view mirrors should be
adjusted for adequate rear 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
Standards 213 and 225 and Canadian
Motor Vehicle Safety Standards 213
and 210.2.
Warning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.
Page 238 of 426
236 Controls in detailUseful featuresArmrest in the rear passenger
compartment
Pull the top of the armrest out and fold
it down.Cup holders in front of seat armrest
Underneath the swiveling cup holder is
another stationary cup holder. You can
only use this when the swiveling cup holder
is pulled out and completely turned
outward.Sliding out the swiveling cup holder
Push button1.
The cup holder slides upward.
Warning!
G
When not in use, keep the cup holder
closed. Place only containers that fit into the
cup holder to prevent spills. Use lids on
open containers and do not fill containers to
a height where the contents, especially hot
liquids, could spill during vehicle maneu-
vers.
!No objects should be in the swiveling
cup holder when the swiveling cup
holder is slided upward. Otherwise the
swiveling cup holder or the objects
could be damaged.
Page 239 of 426
237 Controls in detail
Useful features
Turning the swiveling cup holder
outward
Turn the cup holder in the direction of
arrow2 until it engages.
You can now use both cup holders.Turning the swiveling cup holder inward
and sliding it in
Turn the cup holder in the direction of
arrow3 until it engages.
Turn the cup holder in the direction of
arrow4 until it engages.Cup holder in rear seat armrest
1Cup holder!No objects should be in the stationary
cup holder when the swiveling cup
holder is turned inward and pushed in.
Otherwise the swiveling cup holder or
the objects could be damaged.
Warning!
G
When not in use, keep the cup holder
closed. Place only containers that fit into the
cup holder to prevent spills. Use lids on
open containers and do not fill containers to
a height where the contents, especially hot
liquids, could spill during vehicle maneu-
vers.
Page 272 of 426

270 OperationEngine compartmentHood
Opening
The hood lock release lever is located to
the left of the steering wheel under the
dashboard.
1Hood lock release lever
Pull lever1 downwards.
The hood is unlocked and handle2
will extend out of the radiator grille.
2Handle for opening the hood
Pull handle2 to its stop out of the
radiator grille.
Pull up on the hood (do not pull up on
the handle) and then release it.
The hood will be automatically held
open at shoulder height by gas-filled
struts.
Warning!
G
Do not pull the release lever while the
vehicle is in motion. Otherwise the hood
could be forced open by passing air flow.
!To avoid damage to the windshield
wipers or hood, never open the hood if
the wiper arms are folded forward away
from the windshield.
Warning!
G
To help prevent personal injury, stay clear of
moving parts when the hood is open and the
engine is running. Make sure the hood is
properly closed before driving. When closing
the hood, use extreme caution not to catch
hands or fingers.
The radiator fan may continue to run for
approximately 30 seconds or even restart
after the engine has been turned off. Stay
clear of fan blades.
Page 273 of 426

271 Operation
Engine compartment
Closing
Let the hood drop from a height of
approximately 1 ft (30 cm).
The hood will lock audibly.
Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the headlamps, then it is not
properly closed. Open it again and let it
drop with somewhat greater force.
Warning!
G
If you see flames or smoke coming from the
engine compartment, or if the coolant tem-
perature display indicates that the engine is
overheated, do not open the hood. Move
away from vehicle and do not open the hood
until the engine has cooled. If necessary,
call the fire department.
Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnos-
tic socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.
Page 328 of 426

326 Practical hintsUnlocking/locking in an emergencyUnlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door using
the mechanical key and the tailgate using
the emergency release.
Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
1Unlocking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key counterclock-
wise to position1.
The driver’s door is unlocked.Unlocking and opening the tailgate
A minimum height clearance of 6.40 ft
(1.95 m) is required to open the tailgate.
The emergency release is located on the
inside of the tailgate.
1Release lever
2CoveriUnlocking the driver’s door with the
mechanical key will trigger the
anti-theft alarm system*.
To cancel the alarm, do one of the
following:
Press buttonŒ or‹ on the
SmartKey
Insert the SmartKey in the starter
switch
Page 373 of 426
371 Technical data
Main Dimensions
Main Dimensions
Model
C 240 (all models)
Overall vehicle length
179.0 in (4 546 mm)
Overall vehicle width
68.0 in (1 728 mm)
Overall vehicle height
57.8 in (1 467 mm)
Wheelbase
106.9 in (2 715 mm)
Track, front
59.3 in (1 505 mm)
Track, rear
58.1 in (1 476 mm)