I have a 2015 610-4 and today I noticed that when I switched the AirCon to Low for AC, only hot air blows. Any troubleshooting ideas or possible reasons? I have VagCom and will scan the car for faults.
Thanks in advance!
Is the car new to you? If it is make sure the red light is on on the AC button and check the temp settings. I know that is obvious stuff but check the simple things first. If the red light is on then maybe it needs to be serviced, check for leaks add coolant...
I had the same problem in a 2018 Perf. It was a stuck door in the innards of the HVAC that meant it blew full hot no matter what. Ultimately it resolved itself after a few days of using the car and predictably the day before it was booked in to the dealer.
I cycled through every combination of AC, temp, fan speed, vent positions, recirculate, several times, but it didn't fix it. YMMV.