155 Controls in detail
Control system
Control system
The control system is activated as soon as
the SmartKey in the starter switch is
turned to position1 or as soon as the
KEYLESS-GO start/stop button* is in
position1. The control system enables you
to:
call up information about your vehicle
change vehicle settings
For example, you can use the control sys-
tem to find out when your vehicle is next
due for service, to set the language for
messages in the instrument cluster dis-
play, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Outside temperature
2Trip odometer
3Automatic transmission program mode
4Main odometer
5Current gear selector lever position
Above illustration shows the standard dis-
play.
For more information on menus displayed
in the multifunction display, see “Menus”
(page 158).
i
The displays for the audio systems (radio,
CD player) will appear in English, regardless of
the language selected.
Warning!
G
A driver’s attention to the road and traffic
conditions must always be his / her primary
focus when driving.
For your safety and the safety of others, se-
lecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions per-
mit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
415 Practical hints
What to do if …
Display symbol
Display message
Possible cause/consequence
Possible solution
•
The cooling fan for the coolant is malfunc-
tioning.
Observe the coolant temperature indicator
in the instrument cluster (
page 27).
If the coolant temperature is under 248°F
(120°C), you may continue driving to an au-
thorized Mercedes-Benz Center.
Avoid placing heavy loads on the engine
(e.g. by driving uphill) as well as
stop-and-go traffic.
Have the fan replaced as soon as possible.
±
Display malfunction
Visit workshop
Certain electronic systems are unable to
relay information to the control system.
The following systems may have failed:
Coolant temperature display
Tachometer
Cruise control display
Have the electronic systems checked by an
authorized Mercedes-Benz Center.
Engine
Service
There may be a malfunction in:
the fuel injection system
the ignition system
the exhaust system
Have the engine checked as soon as possi-
ble by an authorized Mercedes-Benz Cen-
ter.
