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Practical hints
What to do if …?
Problem Possible cause Suggested solution
The fuel reserve and fuel cap placement
warning lamp:
ț lights up while driving The fuel level has gone below the reserve
mark.
̈ Refuel at the next gas station
(
୴ page 169).
ț blinks The fuel cap is not closed tight. ̈ Check the fuel cap.
A fuel system leak has been detected. ̈ Have the fuel system checked as soon
as possible by an authorized
Mercedes-Benz Center
B The yellow low engine coolant
level warning lamp remains lit af-
ter starting the engine or lights
up while driving.
The coolant level is too low. ̈ Add coolant (୴ page 176).
̈ 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 light. Extended driving
with the light illuminated 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.