time : is displayedin12h/24h modeand
outside temperature ; in Celsius(†)/
Fahrenheit (‡).
The clockand outside temperaturegauge also
display the Truck infoTruck info menu window in the
trip data menu ß (Y page 75). You can
change the clockmode and the temperature
unit in the MenuMenu menu window within the ä
settings menu (Y page 81).
Check Engine indicator lamp
Indicator lamp
Problem
Possible causes/consequences and MM Solutions
Indicator lamp ;
flashes.
After you have switched the ignition lock intodrive position, the
indicator lamp indicates the system's status by means of a
sequenceofflashes. If thereare no malfunctions, the indicator lamp
goes out after the engineisstarted (Y page 71).
The ; indicator lamp
lights up.
The exhaust gas aftertreatmentismalfunctioning or has an emis-
sions-related fault. The malfunction or defectmay damage the
exhaust gas aftertreatment.
X
If the on-board computer displays an eventwindow, observethe
information.
X
Have the exhaust gas aftertreatmentchecked immediately at a
qualified specialist workshop.
The ; indicator lamp
lights up.
The on-board computer
shows an eventwindow
and the · indicator
lamp in the display.
An emissions-related malfunction has been detected.
X
Follow the instructions in the eventwindow.
X
Have the exhaust gas aftertreatmentchecked immediately at a
qualified specialist workshop.
If you do not follow the instructions in the eventwindow, areduc-
tion in the enginepower output may be imposed, as per the mes-
sage displayed:
R
after approximately ten hours, e.g. if alow-grade diluted reducing
agent is being used or if the dosage is incorrect
R
after approximately 36 hours, e.g. if the exhaust gas recirculation
or the securitysystem is faulty
In certain cases, engineoutput may be reduced even earlier.
70
Instrument cluster
On-boardcomputer and displays
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