2005 MERCEDES-BENZ C240 fuel

89 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system* is
switched off.
The vehicle will lock again automatically
and reactivate the anti-theft alarm
system* within approximately 40 seconds
of unlocking if:


neither door nor trunk is opened


the SmartKey is not inserted in the
starter switch


the central locking switch is not
activatedGlobal locking

Press button‹.
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system* is
activated.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door and the fuel filler flap.

Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
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. It is possible for children to
open a locked door from the inside, which
could result in an accident and/or serious
injury.!To prevent possible malfunction, avoid
exposing the SmartKey to high levels of
electromagnetic radiation.iYou can also open and close the power
windows (
page 225) and power
tilt/sliding sunroof* (
page 229) from
outside using the SmartKey.


90 Controls in detailLocking and unlocking
The SmartKey will then function as
follows:
Unlocking driver’s door and fuel filler
flap

Press buttonΠonce.
All turn signal lamps flash once. The
locking knob in the driver's door moves
up. The anti-theft alarm system* is
switched off.
Global unlocking

Press buttonΠtwice.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system* is
switched off.Global locking

Press button‹.
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system* is
activated.
Restoring to factory setting

Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
!If you can no longer lock or unlock the
vehicle with the SmartKey, then either
the batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.

Check the batteries in the
SmartKey (
page 91) and replace
them if necessary (
page 343).


Use the mechanical key to unlock
the driver’s door (
page 337) and
the trunk lid (
page 338).


Use the mechanical key to lock the
driver’s door (
page 338).


Have the vehicle battery and the
battery connections checked
(page 360).
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.


96 Controls in detailLocking and unlockingAutomatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or more.
You can open a locked door from the
inside. Open door only when conditions
are safe to do so.
You can deactivate the automatic locking
mode using the control system, see “Set-
ting automatic locking” (
page 145).
Locking and unlocking from the inside
You can lock or unlock the doors and the
trunk from inside using the central locking
or unlocking switch. This can be useful, for
example, if you want to lock the vehicle
before starting to drive.
You cannot lock or unlock the fuel filler flap
with the central locking or unlocking
switch.
iThe doors unlock automatically after an
accident if the force of the impact
exceeds a preset threshold.
To prevent the vehicle door locks from
locking, deactivate the automatic
central locking when the vehicle

is pushed or towed


is on a test stand
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.

119 Controls in detail
Instrument cluster
Trip odometer
Make sure you are viewing the trip
odometer and main odometer in the
multifunction display (
page 121).

If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel until the trip odometer appears
(page 122).

Press and hold the reset button in the
instrument cluster (
page 117) until
the trip odometer is reset.
Tachometer
The red marking on the tachometer
(page 24) denotes excessive engine
speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
Outside temperature indicator
!Avoid driving at excessive engine
speeds, as it may result in serious
engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.

125 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard display
AUDIO
NAV*
Vehicle status
message memory
Settings
Trip computer
Telephone*
(page 126)
(page 127)
(page 130)
(page 130)
(page 132)
(page 148)
(page 150)
Commands/submenusDigital speedometer
or outside tempera-
ture
Select radio
station
Activate route
guidance
Call up vehicle mal-
function, warning
and system status
messages stored in
memory
Reset to factory
settings
Fuel consumption
statistics after
start
Load phone
book
Call up maintenance
service display
Select satellite
radio station*
(USA only)
Instrument clus-
ter submenu
Fuel consumption
statistics since
the last reset
Search for
name in
phone book
Check engine oil
level
Operate the
CD player*
Time/Date
submenu
Call up range
Lighting
submenuVehicle
submenuConvenience
submenu

148 Controls in detailControl system
Press buttonæ orç to set
key-dependency
On or
Off
.
Setting parking position* for exterior
rear view mirror
Use the
Mirror set. parking aid
function
to select whether the passenger-side
exterior rear view mirror should be turned
downward during parking maneuvers when
reverse gearR is engaged. For additional
information, see “Activating exterior rear
view mirror parking position*”
(
page 170).

Move the selection marker with
buttonæ orç to the Convenience
submenu.

Press buttonj ork repeatedly
until the message
Mirror set.
parking aid
appears in the
multifunction display.
The selection marker is on the current
setting.

Press buttonæ orç to switch
function
On or
Off
.
Trip computer menu
Use the trip computer menu to call up
statistical data on your vehicle.
The following information is available:Function
Page
Fuel consumption statistics after
start
149
Fuel consumption statistics
since last reset
149
Calling up range
(distance to empty)
150


149 Controls in detail
Control system
Fuel consumption statistics after start
Press buttonÿ orè repeatedly
until the first function of the Trip
computer menu appears in the
multifunction display.

Press buttonj ork repeatedly
until the message
After start
appears
in the multifunction display.
1Distance driven since start
2Time elapsed since start
3Average speed since start
4Average fuel consumption since startFuel consumption since last reset

Press buttonÿ orè repeatedly
until the first function of the Trip
computer menu appears in the
multifunction display.

Press buttonj ork repeatedly
until the message
After reset
appears
in the multifunction display.
1Distance driven since last reset
2Time elapsed since last reset
3Average speed since last reset
4Average fuel consumption since last
reset
iAll statistics stored since the last
engine start will be reset approximately
four hours after the SmartKey in the
starter switch is turned to position0 or
removed from the starter switch.
Resetting will not occur if you turn the
SmartKey back to position1 or2
within this time period.

150 Controls in detailControl systemResetting fuel consumption statistics
Press buttonÿ orè repeatedly
until the first function of the Trip
computer menu appears in the
multifunction display.

Press buttonj ork repeatedly
until the reading that you want to reset
appears in the multifunction display.

Press and hold the reset button in the
instrument cluster (
page 117) until
the value is reset to0.Calling up range (distance to empty)

Press buttonÿ orè repeatedly
until the first function of the Trip
computer menu appears in the
multifunction display.

Press buttonj ork repeatedly
until the message
Distance
appears in
the multifunction display.
The calculated range based on the
current fuel tank level appears in the
multifunction display.
TEL menu*Warning!
G
A driver’s attention to the road must always
be his/her primary focus when driving. For
your safety and the safety of others, we
recommend that you pull over to a safe
location and stop before placing or taking a
telephone call. If you choose to use the
telephone while driving, please use the
hands-free device and only use the
telephone when weather, road and traffic
conditions permit.
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a
vehicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.