Help !!! have a Sprinter 315 CDI – Bj 2007 Motor OM 646986 in October I have New AT engine – and New AT gearbox Built-in since about 10,000 without problems.. Last week I had to step on the highway at 120km suddenly on the brake, because in the last second one still had to push in front of me.. had two big dogs in the Sprinter !! one banged at the brake against the automatic lever from (D) – on (P) then noticed that after the brake.. Possibility to take everything to the right in P, only slightly clacked. after which I had overcome the shock.. Motor-made short break, then everything tried D – R – P everything went then continued driving about 250km later, then I heard a loop / flapping which became louder and louder when giving gas. then drove off the highway, then MKL to motor went off… Then it didn’t start anymore.. ADAC towed me, Sprinter has now been brought to a friend in the workshop. .. Engine Turns Without Compression !!! Question : Gearbox is dead !!! but what could have happened with the engine .. ???? Starter Turns but it sounds quite easy, has motor turned on flywheel with ratchet goes very light and comes only short at a point where it is difficult !! has no compression !!! knows no more now… will next week motor and gearbox supports !! have no explanation why the transmission damage, also the engine can have a damage?? a statement reports to you Thank you in advance