Mercedes-Benz Zetros 2020 Operating Instructions Manual page 94

On-board computer event window
92
Engine and cooling
Display messages
5
Engine oil pres‐
sure too low
?
Coolant tempera‐
ture too high
,
Coolant level too
low
Possible causes/consequences and M Solutions
Supplementary text Û:
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 condi-
tions.
X
Switch off the engine.
X
Apply the parking brake.
X
Check the engine oil level (
Y
( page 164).
X
Consult a qualified specialist workshop.
Supplementary text Û:
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:
ture 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 * indi-
cator 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 engine.
Y
page 78) and top up oil
Stop vehicle. Switch off engine.
Top up coolant Coolant tempera‐
Y
page 159).