Page 96 of 481

95 Controls in detail
Locking and unlocking
Global locking
Press button‹.
With the trunk and all doors closed, all 
turn signal lamps flash three times. The 
locking knobs on the doors move 
down.
The anti-theft alarm system is armed 
now (
page 87).Selective setting
If you frequently travel alone, you may wish 
to reprogram the SmartKey so that press-
ing buttonŒ only unlocks the driver’s 
door, the storage compartment under the 
armrest, the glove box, and the fuel filler 
flap.
Press and hold buttonsŒand‹ 
simultaneously for about 6 seconds.
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 locking knob on the driver’s door 
move up. The anti-theft alarm system is 
disarmed (
page 87).Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once.
The locking knobs on the doors move 
up. The anti-theft alarm system is dis-
armed (
page 87).
Global locking
Press button‹.
With the trunk and all doors closed, all 
turn signal lamps flash three times. The 
locking knobs on the doors move 
down.
The anti-theft alarm system is armed 
now (
page 87).
iIf the turn signal lamps do not flash 
three times, one of the following ele-
ments may not be properly closed:
a door
the trunk lid
the fuel filler flap
the glove box
the storage compartment under the 
armrest
Close the respective element and lock 
the vehicle again. 
     
        
        Page 103 of 481
102 Controls in detailLocking and unlockingLocking and unlocking from the inside
You can lock or unlock the doors and the 
trunk from inside using the central locking 
switch. This can be useful, for example, if 
you want to lock the vehicle before starting 
to drive.
The fuel filler flap will not be locked or un-
locked with the central locking or unlock-
ing switch, respectively.The switches are located on the upper part 
of the center console.
1Central locking switch
2Central unlocking switch
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 122 of 481

121 Controls in detail
Instrument cluster
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
The outside temperature is displayed in 
the multifunction display (
page 129).The temperature sensor is located in the 
front bumper area. Due to its location, the 
sensor can be affected by road or engine 
heat during idling or slow driving. There-
fore, the accuracy of the displayed temper-
ature can only be verified by comparison to 
a thermometer placed next the sensor, not 
by comparison to external displays, e.g. 
bank signs, etc.
When moving the vehicle into colder ambi-
ent temperatures (e.g. when leaving your 
garage), you will notice a delay before the 
lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate tem-
perature displays caused by heat radiated 
from the engine during idling or slow driv-
ing.
!Avoid driving at excessive engine 
speeds, as it may result in serious en-
gine damage that is not covered by the 
Mercedes-Benz Limited Warranty.
Warning!
G
The outside temperature indicator is not de-
s i g n e d  t o  s e r v e  a s  a n  i c e - w a r n i n g  d e v i c e  a n d  
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 128 of 481

127 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard display
AUDIO
NAV*
Vehicle status 
message 
memory
1
Settings
Trip computer
TEL*
(page 128)
(page 129)
(page 132)
(page 132)
(page 134)
(page 149)
(page 151)
Commands/submenusRun Flat Indicator*
Select radio 
station
Show route 
guidance in-
structions, 
current direc-
tion traveled
Call up vehicle 
malfunction, 
warning and 
system status 
messages 
stored in 
memory
Reset to factory 
settings
Fuel consump-
tion statistics 
after start
Load phone book
Check coolant 
temperature
Select satellite 
radio station*
(USA only)
Instrument clus-
ter submenu 
Fuel consump-
tion statistics 
since last reset
Search for name 
in phone book
Digital speedome-
ter/outside tem-
perature
Operate the CD 
player
Time/Date 
submenu
Call up range
Redialing
Call up mainte-
nance service 
indicator
Lighting 
submenu
Check engine oil 
level (SLK 55 AMG 
only)
Vehicle submenuConvenience 
submenu
1The vehicle status message memory menu is only displayed if there is a message stored. 
     
        
        Page 150 of 481

149 Controls in detail
Control system
Press buttonjork repeatedly 
until you see 
Mirror adjustment 
Parking aid in the multifunction dis-
play.
The selection marker is on the current 
setting.
Press buttonæorç to set the 
function to 
On or 
Off
.
Trip computer menu
Use the trip computer menu to call up 
statistical data on your vehicle.
The following information is available:Fuel consumption statistics after start
Press buttonèorÿ repeatedly 
until you see the first function of the 
trip computer menu.
Press buttonjork repeatedly 
until you see 
After start 
in the multi-
function display.
1Statistics called up: since start
2Time elapsed since start
3Average fuel consumption since start
4Average speed since start
5Distance driven since start
Function
Page
Fuel consumption statistics after 
start
149
Fuel consumption statistics 
since last reset
150
Calling up range (distance to 
empty)
151
iWhen you enter the trip computer 
menu, you will always see the fuel 
consumption statistics after start first. 
     
        
        Page 151 of 481

150 Controls in detailControl system
Fuel consumption since last reset
Press buttonèorÿ repeatedly 
until you see the first function of the 
trip computer menu.
Press buttonjork repeatedly 
until you see 
After reset
 in the multi-
function display.
1Statistics called up: since last reset
2Time elapsed since last reset
3Average fuel consumption since last 
reset
4Average speed since last reset
5Distance driven since last resetResetting fuel consumption statistics 
manually
Press and hold reset buttonJuntil 
the values of the statistics are reset 
to
0.
Resetting fuel consumption statistics 
automatically
The values of the statistics will be automat-
ically reset to
0 when one of the following 
values exceeds:
distance: 100 000 miles (100 000 km)
elapsed time: 10 000 hours
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 position1or2 
within this time period. 
     
        
        Page 152 of 481

151 Controls in detail
Control system
Calling up range (distance to empty)
Press buttonèorÿ repeatedly 
until you see the first function of the 
trip computer menu.
Press buttonjork repeatedly 
until you see 
Range:
 in the multifunc-
tion display.
In the multifunction display you will see 
the calculated range based on the cur-
rent fuel tank level.
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 Audio or 
COMAND*.
See separate operating instructions.
Press buttonèorÿ repeatedly 
until you see the 
TEL
 menu in the 
multifunction display.
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 172 of 481

171 Controls in detail
Automatic transmission*
Briefly press the gear selector lever to 
the right in theD+direction.
or
Briefly press button2 on the right 
side of the steering wheel 
(page 167).
The transmission shifts to the next 
higher gear.
If, instead of the manual program mode 
symbolM, thep symbol appears in the 
multifunction display (
page 158), shift to 
the next higher gear. The fuel supply will 
otherwise be interrupted to prevent the 
engine from overrevving.Downshifting
Briefly press the gear selector lever to 
the left in theD-direction.
or
Briefly press button1 on the left side 
of the steering wheel (
page 167).
The transmission shifts to the next 
lower gear.Kickdown
Using the kickdown when driving in the 
manual program modeM is not possible.
Warning!
G
On slippery road surfaces, never downshift 
in order to obtain braking action. This could 
result in drive wheel slip and reduced 
vehicle control. Your vehicle’s ABS will not 
prevent this type of loss of control.iWhen you brake or stop, the transmis-
sion shifts down to a gear from which 
you can easily accelerate or take off.