I got this error on the touchscreen after a few seconds of the ignition being turned on then the whole entertainment system would shutdown. Just in case anyone else is faced with the same problem I thought I would post my findings and solution.
Not surprisingly I traced the problem to the TV module, with it being the top unit in the stack in the rear quarter panel it’s the first one to suffer water ingress. LR very thoughtfully put a big hole for the fan in the top of it which makes it nice and easy for the water to get inside. After copious amounts of contact cleaner and a toothbrush I managed to remove all the corrosion and voila! No more temperature alerts🙂 2011 TDV8 4.4 Vogue SE in Galway Green with Black leather
1998 Saab 900 turbo convertible in Lime Gold with black leather

Yep, a well known fatty leak spot, have you done something to shed any more water that pours in..? Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Not so far, it's wasn't immediately apparent where the water gets in. It was certainly damp in there when i picked the car up but I've been checking it ever since and it's remained bone dry in there so far. Any clues as to where it gets in? 2011 TDV8 4.4 Vogue SE in Galway Green with Black leather
1998 Saab 900 turbo convertible in Lime Gold with black leather

Several culprits including the window, JLR did a shield which was basically a sheet of plastic to shed water away from the top of all the electrics. Wrapping them in a plastic bag should help, I doubt it's a one off... It usually only leaks when the car is parked in a particular orientation to the rain... Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-