Surging can be an EGR problem. A hard judder could be worn friction plates in the torque converter lockup clutch. This sort of judder is sometimes described as being like driving over a cattle grid. Perhaps low oil pressure for the lockup clutch (sticky solenoid or worn oil pump).
Got the codes read on STAR today and they were: P2001 Component N15/3 (ETC [EGS} control unit is defective. P2500 The Transmission has an impermissable transmission ratio. P2502 The Gear is inplausable or the transmission is slipping. P2602 The Voltage Supply of the valves is faulty.
The TCU in the 722.9 transmissions is constantly self-adapting by adjusting clutch pack fill times and pressures. The point of this constant adaptation is to account for variation in assembly tolerances and clutch wear over time. After the initial adaptation by the factory, the self-adapting is a very slow process as there should only be
2010-2013 OEM Mercedes W212 E63 AMG RWD Automatic Transmission 722.9 Gearbox (Fits: Mercedes-Benz) With compatibility and shipping questions: 760-717-6121 Pre-Owned : Mercedes-Benz
Not all the W212 have the same transmission, the 4-cylinder (E200, E220 and E250) have the 5-speed automatic gearbox, while the 6- and 8-cylinder (E300, E350 and E500) are equipped with the 7G-tronic. This has a negative impact on both the performance and driving experience of the 4-cylinder W212s.
Your Mercedes. W212 E350 2009. Nov 3, 2020. #1. I have had this intermittent problem for a year now. After medium journeys (100 miles+) or in hot weather, when approaching a T junction for instance and the vehicle goes below 10mph, the vehicle can throw itself into park whilst still moving (and I hear the parking brake trying to engage into the
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mercedes w212 automatic gearbox problems
