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478 Display messages and warning/indicator lamps
478
W W ar arning/indicat
ning/indicator lamp
or lamp
Possible causes/conseq
P
ossible causes/consequences and
uences and
The radiator fan is faulty
R
The coolant pump is faulty
R
If there is an additional warning tone, the coolant temperature has exceeded 120°C.
& W W ARNING
ARNING Risk of burns when opening the bonnet
If you open the bonnet in the event of an overheated engine or re in the engine compartment, the following situa-
tions may occur:
You may come into contact with hot gases.
R
You may come into contact with other escaping hot operating uids.
R
Before opening the bonnet, allow the engine to cool down.
#
In the event of a re in the engine compartment, keep the bonnet closed and call the re service.
#
Stop immediately in accordance with the tra c conditions and switch o the vehicle. Do not continue driving.
#
Note the messages on the instrument display.
#
If t
If the coolant t
he coolant tem
emper
peratur
ature displa
e display is at t
Consult a quali ed specialist workshop.
#
If t
If the coolant t
he coolant tem
emper
peratur
ature displa
e display is at t
Exit the vehicle and keep a safe distance from it until the engine has cooled down.
#
M M
Solutions
Solutions
y is at the low
he lower end of t
er end of the t
he tem
emper
peratur
y is at the upper end of t
he upper end of the t
he tem
emper
ature scale:
e scale:
peratur
ature scale:
e scale:
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