C63 (7G not MCT) Gear Change Jerky When Cold

[ecain63]

Not a major issue, and probably really only needing a transmission oil change, but does anyone else experience jerky shifts when the box is warming up?

My 2010 7G box shift a bit heavily from 3rd to 4th under mild load whilst warming up. Its not violent or unnerving, just not as silky smooth as it is when warm. Its only when going from 3rd to 4th too. As soon as the box has been run for a few miles all is well and its only been something i've noticed if the car has been sat for a few days between uses. Anyone else got any box-jerk history?

Being too lazy to look in the book today, but does anyone know the service intervals for transmission fluids on the 7G box? Mine is 3 years old now and on 15k miles.

[JimmyR1]

My 2010 had the transmission fluid done on its last (log book) service so reckon yours is due.

[st4]

All 7g boxes I've driven with do it. Software adpations, multiple fluid changes quell it, but the transmission flare comes back..always

[ecain63]

Cool. So far all my research has suggested it normal and means its probably just nearing its fluid change date and software update. Same thing with my C5 RS6, which i believe is still doing very well on its 1st box at 120k miles due to regular fluid changes.

Service is due in 75 days so perhaps they'll do it then.