Hi this is my first post!

On my 2003 Polo 1400SE the heat cannot be turned down and even with the temp control set to blue (cold) it sends out hot air. What is involved in this -is it a simple task?

The reverse is true on my other Polo - it's freezing all the time - no warm air at all!

Can anyone tell what is required if the orange exhaust gas warning light remains on -- this happened when the car had not been driven and the battery went flat. The EPC warning light was also on but went out after a few minutes.

Hope some bright spark can help me. Thanks.