How to diagnose and repair Porsche PSM failure ABS and Park Brake warnings

Here's a quick video on how I diagnose and repair a faulty wheel speed sensor causing all these warnings on a 2012 Porsche Cayenne Hybrid, but this applies to a range of model years of Porsche vehicles that have the same failures.

[@Froztinc]

I have the same fault with PSM but with no communication with TCM as well.
Do you think this would be the source of my problem? I did have the battery go bad and it cleared itself for a little bit went on a test drive then it went back in to limp mode.

[@ripsgarage]

When a battery goes bad, it can store low voltage codes in many different modules, sometimes clearing them is enough. You would need to have DTC's for a k-bus fault in order for this problem in my video to apply. Try disconnecting both battery cables, touch them together (while disconnected) do this for 30 minutes, That will discharge all the modules, and often no communication problems are cured, or cured temporarily. Sometimes the cables wont reach each other and I'll use a wire or meter lead with two alligator clips attached and I'll short them together that way.