Think the sensor/float has gone in coolant bottle question is do I get the genuine land rover one for £87 or an aftermarket one

IIRC in the early days of RRS this was a free replacement as there were a lot of problems on some cars with coolant loss or the float filling with coolant and sinking in the tank................ I appreciate that your car is nearly 10 years old but it might be worth getting a dealer to check if the modified tank and float were ever fitted to your car.................. then you would get it for free or for a contribution for fair wear and tear! If you take a look in TOPIX there was a Service Bulletin regarding this, not a safety recall but a notice to dealers regarding how to deal with the problem and the customer!. 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

£97 with a litre of antifree