Page 49 of 381

40 Tow-away alarm
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
The alarm will last approximately 3 minutes in form of
flashing exterior lamps. At the same time an alarm will
sound for 30 seconds. The alarm will stay on even if the
vehicle is immediately lowered. To cancel the alarm,
insert the electronic key in the starter switch or press
buttonŒ or‹ on the electronic main key.
If the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 220.
To prevent tri gger ing t he tow -away alarm featur e, s witch
off the tow-away alarm before towing the vehicle, or
when parking on a surface subject to movement, such
as a ferry or auto train.To do so, turn electronic key in starter switch to
position 1 or 0, or remove electronic key from starter
switch. Press tow-away alarm switch (1). The indicator
lamp (2) illuminates briefly.
Exit vehicle, and lock vehicle with the electronic main
key.
The tow-away alarm remains switched off until the
vehicle is locked again with the electronic main key, at
which time it is automatically reactivated.
Page 50 of 381

41 Easy-entry/exit feature
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Easy-entry / exit feature
With the easy-entry/exit feature activated, the steering
wheel tilts upwards and the driver’s seat moves
rearwards.
This allows easier entry into and exit from the vehicle
when the driver’s door is opened. However, the engine
must be turned off.
See page 121 for activating/deactivating the easy-entry /
exit feature.When the electronic key is inserted in the starter switch
and the driver’s door is closed, the steering wheel and
the driver’s seat return to the last position set for it.
Wa r n i n g !
You must ensure that no one can become trapped
or injured by the moving steering wheel and the
driver’s seat with the easy-entry / exit feature
activated and you open the driver’s door or remove
the electronic key from the starter switch. Do not
leave children unattended in the vehicle, or with
access to an unlocked vehicle. Unsupervised use of
vehicle equipment may cause serious personal
injury.
Page 51 of 381

42 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Front seat adjustment
To operate the front power seat adjustment switches,
turn the electronic key in starter switch to position 1
or 2 (with a front door open, the power seats can also be
operated with the electronic key removed or in starter
switch position 0).
Wa r n i n 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 reclined 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 upright position and belts are
properly positioned on the body.Never place hands under seat or near any moving
parts while a seat is being adjusted.
When leaving the vehicle always remove the
electronic 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 vehicle, or with access
to an unl ocked vehic l e. Uns upervi s ed us e of vehi cl e
equipment may cause serious personal injury.
Page 52 of 381
43 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.
Page 53 of 381

44 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
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.
Only minor personal adjustments, as described
below, should then be required.
For exterior rear view mirrors, see page 81;
inside rear view mirror, see page 80;
steering wheel adjustment, see page 79.
Adjust the head restraint angle by hand. Push or pull
the head restraint in direction of arrow.
Storing seat positions:
The head restraint, steering wheel and exterior rear
view mirror position are stored together with the seat
position.
See page 85 for notes on the memory function. For
recalling a stored seat / head restraint / steering wheel /
and exterior rear view mirror position see page 86.
Page 54 of 381
45 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.
Page 55 of 381
46 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.
Page 56 of 381

47 Seats
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Removal and installation of front seat head
restraints
Power seat
Caution!
Do not remove head restraints except when mounting
seat covers. Whenever restraints have been removed be
sure to reinstall them before driving.Note:
Tilt the backrest rearward for easier removal and
installation of the head restraints.
To r e m ove :
Press switch (1) upwards and hold until the head
restraint is fully extended. Pull head restraint out.
To i n st a l l :
Press switch (1) upwards and hold for about 5 seconds.
Press the head restraint down until it engages.
Adjust head restraint to the desired position.
Wa r n i n 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 intended to help
reduce injuries during an accident.