Tutorial: Mercedes- Benz 722.9 Gearbox Online Programming using Launch X431 PAD III diagnostic tablet. Supported Mercedes models:E, E, C, SL, M, B,A, CL series 280 ECU programming from Benz main system before year 2013 and part of year 2014. Model tested: Mercedes W221 S280/300L Preparation for programming:Launch X431 PAD III main unit, connector, Pad III standard…