hey there im new to this but ill try to be as accurate as i can lol so ive had my w202 c180 for a while now and i love it but recently its started to constantly blow hot air from the air vents even when the fan is off. the faster i drive the more air that blows out and even when the air con is on the same thing continues to happen from all the vents.

In addition its been taking a few attempts to start the car when its cold and once its on it runs very rough for a minute and then its fine. After it has been turned on and driven for a while i can turn it off and it will start again no problems.

Any help of suggestions on either of these problems would be greatly appreciated or if you require any more information please let me know