I get the same "Not available" message on my MY15 Discovery. I took it to a dealer that we were passing and they said that they are "temperamental" and that I should wait until the oil cools down before looking at the gauge. When I told them that I tried looking at it first thing in the morning before I even started the engine, I was told - oh no, you have to get it to a certain temp
At the dealer while all of that discussion was going on (about 7 minutes) he then accessed the gauge - and guess what - it worked!
So it seems that you have to wait about 10 minutes after switching the engine off to get a reading and not in the morning when it is really cold.


 
						
					 
					
					 
				
				
				
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					 Originally Posted by WhiteD3
 Originally Posted by WhiteD3
					
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