Stuck Fuel Sender

[Markiii]

Just back from a couple of weeks with the S8 in Ireland Both ferriess I ended up on a downward slope and both times on leaving my half a tank of fuel suddenly turned into 0 miles range

In both case filling with fuel caused the gauge to gradually return to normal readings and in both cases she only took as much fuel as I'd expected (i.e nowhere near a full tank)


I conclude the cause is a stuck fuel float, anyway to prevent this from happening again as whilst ultimately an annoyance it was somewhat disconcerting