Hello, first post. Probably here forever now.

Ive got the trifecta Air Susp, HDC, ABS error popping up. The car is riding level and I still hear the usual air suspension hisses when I park. I'm considering getting an icarsoft, but it's not clear to me that it would help me narrow down the problem with the canbus 50 error present. I've tried most of the fixes seen in similar posts but still no joy. I used to see this error intermittently after driving in heavy rain but now it seems to be permanent. New battery also.

Any advice will be greatly appreciated. Thank you