Dead transmission
There was a forward lurch at low speed (1st gear), as if the car had been hit from behind, more jumping and lurching until it shifted into 2nd. I made it through several more traffic lights, having to stop at each with similar and every more violent symptoms. I was able to get the car into low range, and it seemed to like that better. I tried ESP off too. Finally I reached a red light on an uphill grade and the vehicle started rolling backward. There is no longer any connection between the Engine and the axles at all. No forward, no reverse. Nada.
There are no leaks, the undercarriage is completely dry and the coolant is its usual color, showing no signs of leaking through the radiator.
Needless to say, this is an expensive and troublesome event on Labor Day weekend. As I will be at the MB dealer bright and early on Tuesday, I would appreciate any comments that might enlighten. I am worried that the cost of the repair will relate to the total value of the vehicle (could easily cost 1/3 of the book value I assume).
I am a new member to this board so please excuse me if this is too long, etc.
The loud "crunching" sounds at downshift to 1st and the heavy metalic rattle when the car was stopped at the traffic lights (in drive) worry me the most. The Service Tech on the U.S. 1-800- line suggested that the problem might be sheared bolts between the torque converter and flywheel. I understood that from a cost standpoint, this would be a best case scenario...
mercedes benz wanted over 5 grand for the transmission brand new, so she went online, and found a rebuilt 5 speed automatic for it for 2300$. and its all good now, about 5-800$ for installation or something.
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The rebuild 722.6 that the Toronto MB dealer installed seems fine. I headed directly out through rush hour traffic and made it to central Michigan after midnight.
The dealership was very helpful. The rounded up the replacement transmission and torque converter one day and had the car on the road the next afternoon, CAN$4,000 later. Ouch.
I still have no clue as to why this unit decided to self-destruct at a downtown intersection 2,000 miles from home with only 88,000 mostly highway miles on the vehicle. Hmmm.
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Regarding the extended warrantee coverage, I did not purchase it and really don't think it is reasonable to anticipate such extreme mechanical failures in a vehicle that is not abused or used under severe operating conditions. The unit should have been better designed or/or built than that...
My other vehicles are Volvos (one has over 300,000 km and the other two over 100,000 miles) and an Infiniti. I have never experienced such as massive, complete and sudden breakdown as the ML transmission dished out in Toronto. It would be difficult for me to justify purchasing another Daimler product, at least in this life. Something was simply not properly engineered or built in this transmission.








whoops... thanks for clarifying my error. 