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642 Posts
I would start with the ABS issues! No matter what you do the ABS readings are bad for the car. Until they are checked/gone you will face trouble.
There is a HUGE helper:
www.benzworld.org
Edit:
Christmas Lights on the dash = 99% K-40.
There is a HUGE helper:

Mercedes-Benz 722.6 Transmission FAQ
This is the first draft and attempt to put all the common 722.6 related questions/answers in one thread. If you have corrections, suggestions, and extra information, please post in this thread. Table of Content What Is The 722.6 Transmission? Is The Transmission “Sealed For Life?” What...
Edit:
Christmas Lights on the dash = 99% K-40.