tried to check my oil earlier,message on dash read...information not available? 2012 black sdv6 hse.

Be patient, as I said check it first thing in the morning before you start the motor.
You must wait at least 10 minutes before you try after a drive or else you get that message.
Regards
Barryp 2017 Range Rover Sport TDV6 L494 SE Fuji White
2011 Range Rover Sport SDV6 L320 SE Fuji White Loved but GONE
2010 TRAKKA Motorhome Fiat Ducato GONE (What a dud, don't buy one)
2006 Discovery 3 SE TDV6 Automatic Chawton White/Ebony. Loved but GONE
2006 BMW X5 diesel White/Charcoal, Bought new, Gone after 12 years! Was Excellent.
Ex Member Range Rover Club NSW