W203 jerky change up.

[petecooke]

The change up from 1st. to 2nd. on the autobox on my W203 C320 is very jerky once the engine has warmed up. To avoid this I am using winter mode most of the time so as to miss out 1st gear.
Do you think a change of auto-fluid and a check out at a MB workshop might help?

 

[ddentrec]

The change up from 1st. to 2nd. on the autobox on my W203 C320 is very jerky once the engine has warmed up. To avoid this I am using winter mode most of the time so as to miss out 1st gear.
Do you think a change of auto-fluid and a check out at a MB workshop might help?

I honestly do not know.

But other have suggested on this forum the resetting the auto transmission memory (you will have to search for it here somewhere).

Also, there has been a known manufacturing issues with certain radiators: the (Valeo brand?) radiator also cools the transmission oil - but failure of the radiator internals results in water entering the gearbox with predictable consequences (jerky shifts=new gearbox), and DaimlerChrysler may not want to know even if you have a full MB history. Search this forum for more info.

 

[Robbo]

Get the transmission fluid changed. Thats's the most likely cause if this IMO. My fluid was changed and the changes are now as smooth as silk.

 

[fredfloggle]

Changing the fluid helped - though don't expect the results directly - it takes a few days .
I have got to be honest and say that this is not the smoothest box in the world (but I have only had manual boxes for the past 20 years- there are times when I want the box to hold on to a high gear (my car is a CDI) , but with large throttle openings , to make good use of the torque - but the thing changes down , and revs to hell . It is a shame that the Tip function won't allow you to force an upchange .

 

[Dieselman]

The MAF sensor going will also cause harsh changes but normally irregularly and very hard.