Mercedes-Benz Actros Operating Instructions Manual page 193

Engine and cooling
Display messages
5
Eng. oil press.
too low
?
Coolant tempera‐
ture too high
,
Coolant level too
low
On-board computer event window
Possible causes/consequences and M Solutions
Supplementary text Û:
engine.
The 5 indicator lamp lights up red in the status area of the on-
board computer as well as in the event window. The engine oil
pressure is too low.
The operating safety of the engine is jeopardised.
X
Stop the vehicle at once, paying attention to road traffic condi-
tions.
X
Switch off the engine.
X
Apply the parking brake.
X
Check the engine oil level (
( Y page 354).
X
Consult a qualified specialist workshop.
Supplementary text Û:
engine.
The ? indicator lamp lights up red in the status area of the on-
board computer as well as in the event window.
X
Stop the vehicle at once, paying attention to road traffic condi-
tions.
X
Switch off the engine.
X
Apply the parking brake.
X
Let the engine cooling system cool down.
Supplementary text Û:
ature not reliable
The * indicator lamp lights up in the status area of the on-board
computer as well as in the event window. As long as indicator lamp
* is on, the coolant temperature cannot be displayed.
The coolant level has dropped to at least 3 litres below the normal
filling level. The operating safety of the engine is jeopardised.
X
Stop the vehicle at once, paying attention to road traffic condi-
tions.
X
Switch off the engine.
X
Apply the parking brake.
X
Top up the coolant (
X
Have the engine cooling system checked for leaks at a qualified
specialist workshop.
Stop vehicle. Switch off
Y page 159) and top up oil
Stop vehicle. Switch off
Top up coolant Coolant temper‐
Y page 349).
191
Z