Mercedes-Benz Actros Operating Instructions Manual page 135

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Display messages
?
Coolant temperature too
high
?
Engine protection:
engine power reduced
+
Coolant level too low
+
Coolant pressure regula-
tion faulty
Transmission and clutch
Display messages
Ú
Transmission faulty
Possible causes/consequences and
* The coolant temperature is too high. Engine power output is auto‐
matically reduced.
Reduce the speed.
#
Shift to a lower gear.
#
or
Stop the vehicle, paying attention to road and traffic conditions.
#
Switch off the engine.
#
Remove objects that could block the air supply to the radiator,
#
e.g. paper which has blown onto the grille.
* The coolant temperature is too high. Engine power output is auto‐
matically reduced.
Reduce the speed.
#
Shift to a lower gear.
#
or
Stop the vehicle, paying attention to road and traffic conditions.
#
Switch off the engine.
#
Remove objects that could block the air supply to the radiator,
#
e.g. paper which has blown onto the grille.
* Supplementary text Û :
The coolant level has dropped below the normal filling level. The yel‐
low event window is shown when the engine is cold and the ignition
is switched on.
Top up the coolant (
#
If the coolant level drops again, immediately have the cooling
#
system checked at a qualified specialist workshop.
* The electrical connector or the hose fitting on the coolant expansion
reservoir is loose. The turquoise cap on the coolant expansion res‐
ervoir is not tight.
Check the electrical connector and the hose fitting on the cool‐
#
ant expansion reservoir (
If you detect any leakage, have the engine cooling system
#
checked at a qualified specialist workshop.
Possible causes/consequences and
* Supplementary text Û :
The gearshift system has a malfunction. Continuing the journey is
possible with restrictions.
Have the transmission checked at a qualified specialist work‐
#
shop.
On-board computer and displays 133
Solutions
M
Top up coolant.
page 322).
/
page 322).
/
Solutions
M
Visit workshop.

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