Engine management Light Question!

[C180_Driver]

Hi all,
Can anyone help me with your thoughts or hopefully facts!!
My 05 C270 C Class has recently had two occasions where the engine management light came on and putting it into drive or reverse (It's Auto) was suddenly really clunky. It then seemed to get stuck in one gear (2nd gear maybe?)
It's been to a garage once before for this problem they said they had plugged it into the diagnostic and then decided to replace 'the gearbox circuit' ?? Gearbox ECU they mean maybe?? They were pretty vague, and they didn't seem to want to explain very much.
But here I am again within 24 hours of the first time, having it happen a second time.
Did they change this "circuit"? Or was I told a little white lie??
Has anyone else any experience or ideas on the problem?
Thanks all!!

 

[whitenemesis]

Sounds like a failure of the electro-plate in the auto box. Had mine changed recently £180 plus fitting and oil.

 

[C180_Driver]

Thank You for the reply. The garage have changed something.......what once again they are a bit vague but its been to Mercedes for an update of some sort too, which is promising.
If it happens again I will suggest this. Thank you