After visiting couple of electricians, finally a mechanic said that fuel average belongs to the available functionality within the gear box. To see this absent fuel average on the meter, I have to change the gear box. I mean I am surprised what gearbox needs to do with the fuel average display on meter? All fuses are fine, else on the first stance, the electricians normally say "does it comes with fuel average" or "did I observe fuel average displaying from the very beginning when I bought this car" .... Ahhh!!! please help.