Page 99 of 409

98 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm system
within approximately 40 seconds of un-
locking if:
neither door nor trunk is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not
activated
Global locking
Press button‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The anti-theft alarm system is
armed.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 5 seconds un-
til battery check lamp5 flashes twice.
The SmartKey will then function as
follows:
Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.
Global locking
Press button‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The anti-theft alarm system is
armed.
Page 104 of 409

103 Controls in detail
Locking and unlocking
Automatic locking
The doors and the trunk lock automatically
when the vehicle is set into motion.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
You can deactivate the automatic locking
using the control system (
page 137).
Locking and unlocking from the inside
You can lock or unlock the vehicle from in-
side using the central locking switches.
This can be useful, for example, if you want
to unlock the passenger door from the in-
side or want to lock the vehicle before
starting to drive.
The central locking switch does not lock or
unlock the fuel filler flap.
iThe emergency release button does
not open the trunk lid if the vehicle
battery is discharged or disconnected.
If the vehicle has previously been
locked from the outside with the
SmartKey, opening the trunk from the
inside using the emergency release
button 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.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle locks automatically when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle
is pushed
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.
Page 116 of 409

115 Controls in detail
Instrument cluster
Resetting the trip odometer
Make sure you are viewing the trip
odometer in the right multifunction dis-
play (
page 117).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel until the trip odometer appears
in the right multifunction display.
Press and hold the reset button1
(page 113) until the trip odometer is
reset.
Tachometer
The red marking on the tachometer
(page 29) 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
The outside temperature is displayed in
the left multifunction display (
page 117).
For information on how to select the unit of
the displayed temperature, i.e. degrees
Celsius (°C) or degrees Fahrenheit (°F),
see “Selecting temperature display mode”
(
page 129).
!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.
Page 122 of 409
121 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Standard display
AUDIO
Vehicle status
message memory
1
1The Vehicle status message memory menu is only displayed if there is a message stored.
Settings
Trip computer
Telephone
(page 122)
(page 123)
(page 124)
(page 126)
(page 137)
(page 139)
Commands/submenusDigital speedometer
Selecting radio
station
Calling up vehicle
malfunction, warn-
ing and system sta-
tus messages
stored in memory
Resetting to factory
settings
Fuel consumption
statistics after start
Loading phone book
Calling up mainte-
nance service dis-
play
Operating the
CD player
Instrument cluster
submenu
Fuel consumption
statistics since the
last reset
Searching for name
in phone book
Checking tire infla-
tion pressure
Time submenu
Calling up range
Lighting submenuVehicle submenu
Page 138 of 409

137 Controls in detail
Control system
Setting automatic locking
Use this function to activate or deactivate
the automatic central locking. With the
automatic central locking system
activated, the vehicle is centrally locked at
vehicle speeds of approximately
9mph(15km/h).
Move the selection marker with button
æ or ç to the
Vehicle
submenu.
Press button j or k repeatedly
until you see the following message in
the left display:
Automatic door lock
.
The selection marker is on the current
setting.
Press button æ or ç to switch Automatic door lock
On or
Off
.Tire inflation pressure display
Use this function to set the unit for the tire
inflation pressure display.
Move the selection marker with button
æ or ç to the
Vehicle
submenu.
Press button j or k repeatedly
until you see the following message in
the left display:
Tire pres. display
.
The selection marker is on the current
setting.
Press button æ or ç to select
the desired tire inflation pressure unit.
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
138
Fuel consumption statistics since
last reset
138
Calling up range (distance to emp-
ty)
139
iThe last function called up will reap-
pear the next time you enter the trip
computer menu.
Page 139 of 409

138 Controls in detailControl systemFuel consumption statistics after start
Press button ÿ or è repeatedly
until you see the first function of the
Trip computer menu.
Press button j or k repeatedly
until you see the following message in
the left display:
From start
.
1Distance driven since start
2Average speed since start
3Time elapsed since start
4Average fuel consumption since startFuel consumption since last reset
Press button ÿ or è repeatedly
until you see the first function of the
Trip computer menu.
Press button j or k repeatedly
until you see the following message in
the left display:
From reset.
1Distance driven since last reset
2Average speed since last reset
3Time elapsed since last reset
4Average fuel consumption since last
reset
Resetting fuel consumption statistics
Press button ÿ or è repeatedly
until you see the first function of the
Trip computer menu.
Press button j or k repeatedly
until you see the reading that you want
to reset in the left display.
Press and hold the reset button in the
instrument cluster (
page 113) until
the value is reset to 0.
iAll statistics stored since the last en-
gine 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 with-
in this time period.
Page 140 of 409

139 Controls in detail
Control system
Calling up range (distance to empty)
Press button ÿ or è repeatedly
until you see the first function of the
Trip computer menu.
Press button j or k repeatedly
until you see this message in the left
display:
Range
.
In the right display you will see the cal-
culated range based on the current fuel
tank level. Your driving style will affect
the accuracy of the calculated range.
TEL menu
You can use the functions in the
TEL
menu
to operate your telephone, provided it is
connected to a hands-free system and
switched on.
Switch on the telephone and the radio.
Press button ÿ or è on the
steering wheel repeatedly until you see
the
TEL
menu in the left display.
Which messages will appear in the right
display field depends on whether your tele-
phone is switched on or off:
If the telephone is off, the message in
the multifunction display is:
TEL OFF
.
iIf the reserve fuel level has been
reached, the range may no longer
shown.
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 rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call. If you choose to use the tele-
phone while driving, please use the
hands-free device and only use the tele-
phone when weather, road, and traffic con-
ditions permit.
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a ve-
hicle.
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.
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or
personal injury.
Page 179 of 409

178 Controls in detailAutomatic transmission
Press button2 (
page 174) on the
right side of the steering wheel.
or
Briefly press the gear selector lever to
the right in theD+direction.
The transmission shifts to the next
higher gear.
The current gear selector position ap-
pears in the right multifunction display
(page 117).
If the red gearshift indicator lamp>
comes on in the speedometer display
(
page 29), shift to the next higher gear.
The fuel supply will otherwise be interrupt-
ed to prevent the engine from overrevving. Deactivating manual gearshift program
Turn program mode selector switch1
(page 173) to the C or S setting.
The selected gearshift program ap-
pears in the right multifunction display.Emergency operation
(Limp Home Mode)
If vehicle acceleration worsens or the
transmission no longer shifts, the trans-
mission is most likely operating in limp
home (emergency operation) mode. In this
mode only second gear and reverse gear
can be activated.
Stop the vehicle in a safe location.
Move gear selector lever toP.
Turn off the engine.
Wait at least 10 seconds before
restarting.
Restart the engine.
Move gear selector lever to positionD
(for second gear) orR.
Have the transmission checked at an
authorized Mercedes-Benz Center as
soon as possible.