BenzWorld Junior Member
Date registered: Feb 2008
Vehicle: 2005 ML500, 1999 C230 KOMPRESSOR, 1993 300E, 1964 220SE, 1994 E320, 2001 E320 4MATIC, 1991 380SEL
Location: ALEXANDRIA, VIRGINIA
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
It's pretty common if you have a 722.9 Transmission. The control unit needs to be replaced, which is located inside your transmission. The Turbine speed sensor goes bad and you have to replace the whole entire unit. Unfortunately, M-Benz dealership has a monopoly on this part and won't sell it to independent shops. However, they will sell you the whole 722.9 Transmission assembly. I think it's stupid, but apparently there a lawsuit between Seimens (Transmission Control Unit) manufacturer and M-Benz.
I'M A FACTORY-TRAINED MERCEDES-BENZ MASTER SYSTEMS TECHNICIAN, ASE (AUTOMOTIVE SERVICE OF EXCELLENCE) MASTER AUTOMOBILE TECHNICIAN, BOSCH MASTER TECHNICIAN, MECP (MOBILE ELECTRONICS CERTIFIED PROFESSIONALS) MASTER TECHNICIAN, AND A L1 ASE & BOSCH ADVANCED ENGINE PERFORMANCE SPECIALIST WITH A MASTER'S IN BUSINESS ADMINISTRATION.