2004 MB C240 4MATIC Wagon with 160000 miles
Here are the symptoms:
-from cold, shifts are perfect, smooth, no problem at all
-approximately after 5 minutes of driving, SUDDENLY 2-3 shift becomes hard, car shakes back and forth, jerks
-all the other shifts remain smooth

Work performed:
-scanned engine and transmission computers, no codes (Autel DS808)
-flushed tranny
-replaced filter, conductor plate, electrical connector, fluid
-tested all 3 shift solenoids for resistance, clicking, and pressure holding...
-fluid level is perfect

I don't feel like this condition improved at all, comparing from before service.

It is 4MATIC, so I have replaced fluids in both differentials and transfer case.

I filmed all this, it is on youtube, Dieselmercedes.

Anybody familiar with this and knowing the SOLUTION ?

Will be next to install Sonnax 68942-05K Overlap Control Valve Kit ?

Thanks for sharing.

Petr