Instruments and controls 91Fuel gaugeDisplays the fuel level in the tankdepending on the operation mode.Control indicator Y illuminates if thelevel in the tank is low. Refuelimmediately if it flashes.Never run the tank dry.Because of the fuel remaining in thetank, the top-up quantity may be lessthan the specified tank capacity.Service displayThe message InSP appears when itis time for servicing. Furtherinformation 3 202.Control indicatorsThe control indicators described arenot present in all vehicles. Thedescription applies to all instrumentversions. When the ignition isswitched on, most control indicatorswill illuminate briefly as a functionalitytest.The control indicator colours mean:Red = Danger, importantreminder,Yellow = Warning, information,fault,Green = Confirmation of activation,Blue = Confirmation of activation.