Climate control starts and stops no matter which is on, heater or AC.

No clicking. It's not the flaps. The fan is not coming on. Sometimes the fan comes on and sometime it doesn't. Sometimes it comes on after driving for 5 or 10 minutes. Yesterday it didn't come on at all. This afternoon I started the engine and it came on just like it should. I'll hit the auto button and the screen shows the fan bars lighting up. If I turn on the heat I think the heaters on but it just not blowing. The same with the AC.

I have a 2004 clk 500 an my car is doing the same thing let me know if you fix your problem