Mercedes-Benz 2013 SL Operator's Manual page 176

Refueling
174
i
If you are driving with the fuel filler cap
open, the 8 reserve fuel warning lamp
flashes. The ; warning lamp may also
light up. A message appears in the
multifunction display ( page 256).
Y
For further information on warning and
indicator lamps in the instrument cluster,
see ( page 277).
Y