Grey water level indicator error.

[Blue Grand Driver.]

Our grey water indicator reads 40% when completely empty. It still increases and deceases above that point with filling and emptying so has some functionality. Any advice on how to fix. It’s a 2021 680.

 

[Hammer]

I would start by giving waste tank a good clean (might just be some muck on the sensor), couple options one is use Puriclean, easiest way is clean fresh tank then run water through taps and fill waste. Drive around for bit with tank full to give good soaking. other option i know people use is dishwasher tablet in sink and pour water through so goes into waste tank then do same drive around so it soaks.

 

[PaulGC680]

When you drive around judge it so the grey tank is half full so you get maximum slop.