Heater And Inside Windscreen Icing

[740 csb]

I have just joined the forum and have a problem with my 02 Yaris 1.0 CDX in that the heater never seems to get any hotter than luke warm and the windscreen ices up on the inside in this type of weather. Carpets perfectly dry and never leaks inside at all in the 10 years we have had the car. Main dealer serviced from new. It has had the pollen filter changed. Please can anyone suggest any remedies? Thanks

[Karma Supra]

Check the thermostat?

[crofter]

Hi clive,is the engine reaching working temperature?

And welcome to the club

Del

[PaulinhoT]

Hi Clive, welcome to the T.O.C

Like posted above, what does the temp gauge show ?

[740csb]

Thank you for responding. Yes the car always reaches working temperature. The temperature gauge is just a little blue light that goes out as soon as working temperature is reached. Have never had any engine problems at all (touch wood!) so it is a real mystery to me and local dealer but will try a new thermostat - once again thank you