So the Golf R Start/stop no longer engages and in the car status screen it constantly shows High Power Consumption as being the reason. I booked it into VW to check and they found no fault and reckoned that it engaged every time when they took the car out for a test. Its not worked for me for several months now and nothing since being at the garage. I have tested by having wing mirror demist off, fans off, infotainment off... all sorts but nothing engages it.
I did read a post somewhere stating this could be a vacuum sensor but would expect VW to know about this to check it and I'm not sure I believe them when they said it worked every time for them.
Any advice as to what could be causing this would be much appreciated?