I have a 09 V70 and the fan switch does not light up (showing the green bars) or adjusts the fan speed. The heat still works. Switching AC off or on makes no difference. I understand that maybe the whole climate control panel may be at fault. Any ideas?

 

I've used these folks, a couple of hundred times over the years with a 99.8% success rate - check the common failures at the near the bottom of the page.

https://xemodex.com/us/product/clima...epari-service/