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434 Display messages and warning/indicator lamps
434
W W ar arning/indicat
ning/indicator lamp
or lamp
ÿ
Coolant warning lamp (yel-
low)
Possible causes/conseq
P
ossible causes/consequences and
uences and
Note the messages on the driver 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 the coolant t
If 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.
#
Check the coolant level (
/
#
Make sure that the air supply to the radiator is not obstructed.
#
Avoiding high loads on the engine, drive to the nearest quali ed specialist workshop. In doing so, ensure that the
#
coolant temperature display remains below 120°C.
* The yellow coolant warning lamp is lit while the engine is running.
Possible causes:
The temperature sensor is malfunctioning
R
The charge air, transmission oil or battery cooling is faulty
R
The radiator shutters are blocked or defective
R
Avoiding high loads on the engine, drive to the nearest quali ed specialist workshop.
#
M M
Solutions
Solutions
y is at the low
he lower end of t
er end of the t
he tem
emper
y is at the upper end of t
he upper end of the t
he tem
emper
page 318).
peratur
ature scale:
e scale:
peratur
ature scale:
e scale:
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