Mercedes-Benz 2003 C 240 4MATIC Operator's Manual page 266

Practical hints
What to do if ...
Display
B
COOLANT
CHECK LEVEL!
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 can be seriously burned.
266
Possible cause
The coolant level is too low.
!
G
Do not ignore the low engine coolant
level 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 en-
gine damage.
Suggested solution
Add coolant ( page 238).
If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Center.