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146 On-board computer and displays
Display messages
Engine and cooling
Display messages
5
Engine oil pressure low
?
Coolant temperature too
high
+
Coolant level too low
Possible causes/consequences and
Leave the engine running.
#
The compressed-air system is charged.
If the J warning lamp in the instrument cluster goes out:
Continue the journey.
#
If the J warning lamp in the instrument cluster does not go out:
Check the compressed-air brake system for leaks
#
(
page 204).
/
If the compressed-air brake system is not leaking, but the J
#
warning lamp does not go out: have the compressed-air brake
system checked at a qualified specialist workshop.
Possible causes/consequences and
* Supplementary text Û :
In addition to the event window, the indicator lamp 5 in the sta‐
tus area lights up red. The oil pressure in the engine is too low.
The engine operating safety is at risk.
Safely park the vehicle as soon as possible.
#
Switch off the engine.
#
Apply the parking brake.
#
Check the oil level in the engine and top up oil (
#
Notify a qualified specialist workshop.
#
* Supplementary text Û :
In addition to the event window, the indicator lamp ? in the sta‐
tus area lights up red.
Park the vehicle safely as soon as possible.
#
Switch off the engine.
#
Apply the parking brake.
#
Let the engine cooling system cool down.
#
* Supplementary text Û :
reliable
In addition to the event window, the indicator lamp + in the sta‐
tus area lights up. The coolant temperature display cannot be relied
up as long as the indicator lamp + is on.
The coolant level has dropped at least three litres below the normal
level. The engine operating safety is at risk.
Safely park the vehicle as soon as possible.
#
Switch off the engine.
#
Apply the parking brake.
#
Top up the coolant (
/
#
Solutions
M
Solutions
M
Stop vehicle. Switch off engine.
/
Stop vehicle. Switch off engine.
Top up coolant Coolant temperature not
page 322).
page 326).
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