C180 automatic transmission brocken

What is your current mileage on it? Seem kinda young to die... What sort of problem are you getting? It can be simple work. Dealer always want to do the swapping instead of repairing... it is easier on them and harder on your wallet.

Thanks Tiger,

The mileage stand is 82,800 Km. Once, about two months ago, suddenly the car only wish to drive in first (i think) gear range in drive position. At that time, it was solved by re-setting the electronic unit, by MB engineer. Again, happened, but now the gear changing shock is very strong. - When we change from N to R, R to N, N to D, D to N,,, Also, during D position, transmission step always remains in first gear. In the dash panel, it displays at D position.

The engineer says, if i change only the electronic control unit, they expect it again. Because the mechanism of transmission itself are damaged.

Here is Germany. The costs are extremely high with less guarantee.

Hans

That doesn't really seem to make sense to me... If resetting the electronics "fixed" it for a while? How long did it work OK, after the reset?

I think I would talk to a different tranny guy. Sound to me like he just wants to replace everything, so as to avoid doing a proper diagnoses.

Marty

Dear Marti,

Thanks for interest. I can feel comparing from the first happening, about two months ago, now the gear shifting shock is much greater and greater. When I change gear, for example from Neutral to Drive (or Reverse), if I can not press the break then the car will immediately move. It is,,, I think the hyd. oil flows very rapidly and changes the gear without taking stabilizing movement.

I do not know what they did, when it happened at first time. They set it in a short second. - did not inspected the gear. but the symptom disappeared.

Now as the gear change shock is greater and greater, they said they can not repair only the electric control unit. They said they had replaced the elec. unit to other one they had, but still they received malfunction signals generating from the gear mechanism. That's why they says to me to repair whole. Not only the elec. unit.

I asked and answered. When I change the elec. unit only, the car may repaired. But, they cannot able to say when the damage will happen again. (Because, they believe the transmission itself has damages) Perhaps, in one week, one month or six months, the car elec. unit will damaged again under continuous malfunction signals from transmission, they said.

Hans

First of all... sorry for not getting back to you earlier... I was busy. It definitely is not tranny overhaul... it is too young for that.

Have you had your transmission fluid and filter changed lately? This is the first thing I would do because as tranny fluid age, it gets rougher at shifting.

As for your tranny stuck on 1st gear... that is fail safe mode... meaning your engine have some trouble that engaged your limp home mode. What trouble code did you get when that happen? Did you correct it?

The worse case scanario is simply rebuild your valve body... changing out the selenoids and valves that controls the shifting. I DO NOT believe it is the electronic brain is at fault at all.

Hi, Tiger,

Thanks for answer.

We bought the car from March this year, never changed the transmission related things. (oil, filter,,,) The car did not display any kind of error message to dashboard. - this is problem. ; But I heard from the MB engineer that they receive error signals on tranny control kit. ; I will ask more details to them. - next week.

Hans