Hi, could anyone help. My audiA4 heater is not working, any suggestions why and how to eliminate things

You have given us precious little information to work with Roger, so please tell us:

1/ Does the heater fan work?

2/ Does the temperature guage read 90 when the engine is hot?

3/ Has the coolant system been opened recently? (A new thermostat for example, or a leak fixed.)

4/ Do you need to top up the coolant reservoir more than once per year.

Any answers for us Roger? I see you visited the forum four hours ago.

After another visit by you Roger to the forum since my question yesterday we still have no response. I guess you don't really want any assisstance and we have wasted our time responding. O well, goodbye.