Hi, I was wondering if anyone could shed some light or even if they'd experienced the same problem.    I have had a 2013 Octavia estate for just over a year.  Recently it has developed rather a puzzling problem.   After starting and driving, if I get onto a motorway or point it up a decent sized hill the temp gauge will start to creep past 90. If I continue driving it will quite quickly go into the red and the computer will beep and tell me to stop.    If I stop the