Thanks for the reply. The thermostat wasn't touched as part of the service, no, but when I received the car back there was no water/coolant in the expansion tank and the car overheated. I filled up with a water just to get me back to the dealers, but they've drained it and re-filled it and say its the thermostat broken.
Now it may be the thermostat has just died, but its only on 29,000 miles, and it seems a huge coincidence that it dies the day after a service when they didn't put enough water in the system?? I'm not 100% certain on cooling systems, which is why i was just wondering if the lack of water could have caused the thermostat failure. The temp needle has never gone above half way in all the time i've owned it, so I'm suprised its suddenly gone!
Cheers,
Nat
PS - the car doesn't get off-roaded, got another for that!! :lol: