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Practical hints
What to do if …
Display symbol Display messages Possible cause Possible solution
? (USA only)
± (Canada only)
Visit workshop
There may be a malfunction in the:
ț fuel injection system
ț ignition system
ț exhaust system
ț fuel system
̈ Have the measuring system checked
by an authorized Mercedes-Benz Cen-
ter.
B
Coolant
Check level
The coolant level is too low. ̈ Add coolant (୴ page 308).
̈ If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Center.
Warning! G
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.
!
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.