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Practical hints
What to do if ...
Display symbol
Display message
B
Top Up Coolant
See Operator's Manual
Warning!
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You could be seriously burned.
450
Possible cause/consequence Possible solution
The coolant level is too low.
!
Do not ignore the low engine coolant level
G
warning. Extended driving with the message and
symbol displayed may cause serious engine
damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant
in the cooling system. The engine will overheat,
causing major engine damage.
Add coolant ( page 360).
If you have to add coolant frequently,
have the cooling system checked by an
authorized Mercedes-Benz Light Truck
Center.
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