Hi I have BMW E53 X5 3L PETROL I went to fill up the other day and never switched off the engine, filled up as usual 40£ shortly after my engine light came on, as you look at the dash the bottom left hand corner it looks like a block like looking symbol illuminated in yellow, she runs fine no difference in performance any ideas as to why this light could have come on is it cuz air has got into the tank? Winch in case tripped off the computer??? sensor problem ?
Any easy fixes it is booked in for a diagnostic report though really do need some advice before she goes in today?
How can I reset it