So I'm cleaning the car and within 10 mins I am getting a LOW BATTERY - START CAR warning.

I thought my battery was dying so I went an got a brand new one, coded it in with IID and it's still doing it!

Any ideas what could be causing this?

Worth mentioning that it was also doing it yesterday when the car was connected to a stabilised 13.5v power supply too.

the old battery is 12.5v so nowhere near dead.

MY 2011 TDV8 does the same. It appears to be a bug in the battery monitor, which was addressed with a software update. I haven't had mine done because I don't use the Stealers any more, so I just put up with it.
Like you, when I first got the car, I replaced what was probably a perfectly good battery! 2011 Vogue TDV8 4.4
1992 Mazda Mx5

me too. constantly throws up start engine warning but battery is 12.3 V!!

I’ve got IID so I’ll look into the update and see if I can do it.

I think it’s normal to be honest Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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I don’t want to sound like a M.D. , but they all do that…
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

Which I reckon is most of the problem with the fbh not working properly, it keeps getting told the battery is to low

I did wonder what the correct battery code is to use in IID but no one seems to know

MM 2011 TDV8 AB
2006 TD6 AB (Gone to Wales)