Mercedes-Benz Actros 2017, Operating Instructions Manual

Page: 180 / 436

Engine and cooling
Display messages
Possible causes/consequences and
M
Solutions
5
Engine oil pressure
too low
Supplementary text
Û
:
Stop vehicle. Switch off 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 pres-
sure is too low.
The operating safety of the engine is jeopardised.
X Stop the vehicle at once, paying attention to road traffic conditions.
X Switch off the engine.
X
Apply the parking brake.
X
Check the engine oil level (
Y
page 148) and top up oil
(
Y
page 360).
X Consult a qualified specialist workshop.
?
Coolant temperature
too high
Supplementary text
Û
:
Stop vehicle. Switch off 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 conditions.
X
Switch off the engine.
X Apply the parking brake.
X Let the engine cooling system cool down.
,
Coolant level too
low
Supplementary text
Û
:
Top up coolant Coolant temperature
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 the
*
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 conditions.
X Switch off the engine.
X Apply the parking brake.
X
Top up the coolant (
Y
page 356).
X
Have the engine cooling system checked for leaks at a qualified
specialist workshop.
178
On-board computer event window
On-board computer and displays