The Ginge wrote
Checked the coolant, and there was none.
I hope that the level had just fallen below the bottom of the expansion tank, and you hadn't lost all of it. How much did you have to put in to get the level back to the "full" mark ?
Spoke to the Seat Dealer again (Had already booked it in in a couple of weeks a few hours before) and he recomended putting water in and driving a few miles, which I did, and Hot Air is back. Suspect I have a leak as it had gone down about a cm after that.
It is really very important to keep the coolant level up. Keep checking it and filling up to the top mark, every day if necessary. Is there any evidence of a leak, a puddle where you usually park or water in the undertray?
Will have to buy some coolant and keep it topped as a temporary measure until I can get it looked at. First time they could look at it is a couple of weeks but suspect if I tell him it is leaking should be able to get it in sooner.
The dealer should be worried about this. I would expect them to do a full compression test and show you the results. Lack of cooling will usually cause the cylinder head to warp and the head gasket to blow. Make sure you get this sorted before your warranty runs out.
Thanks for ther advice Muttley, saved me driving with no coolant!!!
Glad I could
help, and I hope it was caught in time to prevent major damage.