Evening all. I have 2014 Superb estate 2.0 TDI DSG.
I am posting this up as information. Hope it is of use to somebody as it took a while to isolate first time round. This has now happened twice on my car, although over 100K miles each time. APOLOGIES if already discussed elsewhere.
The symptoms for this problem are: The water temperature gauge needle starts to rise and drop, particularly when the temperature is cold, i.e. early morning. This can result in NO warm blowing into the car, even on hottest setting.
The part that needs replacing is the thermostat mounted on top of the oil cooler. Fairly simple job once airbox is removed. Have included picture of the part number should somebody need it.