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Practical hints
What to do if …?
Display symbol Display message Possible cause/consequence Possible solution
4
Gas cap is open
A loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky.
̈ Check the fuel cap (୴ page 312).
If it is not closed properly:
̈ Close the fuel cap.
If it is closed properly:
̈ Have the fuel system checked by an
authorized Mercedes-Benz Center.
± Certain electronic systems are unable to
relay information to the control system.
The following systems may have failed:
ț Coolant temperature display
ț Tachometer
ț Cruise control display
̈ Have the electronic systems checked
by an authorized Mercedes-Benz Cen-
ter.