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I've searched and come up with nothing...

I have a S1 RS4, it has occasionally been 'jumping' out of OD at cruise. It seems to only do it late at night for some reason, after the car has been sitting for some time....At least thats the only time I've managed to notice it. Basically, it will rev up and down erratically as OD engages and disengages. With OD off, revs are constant, but this is not going to be very flash for economy.

By occasionally, I mean this has mostly only happened once in a blue moon, not a daily or even weekly occurrence.

Any ideas? Its in for service soon, will have all new fluids for the box, attessa units etc and all systems bled and suchlike, I'm hoping that may sort it.

I'm also wondering whether a low-speed, light throttle stalling issue (again, intermittent) it has may be related, as its almost like its staying in OD lockup even at carpark speeds when theres light/no throttle opening.

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https://www.sau.com.au/forums/topic/243703-overdrive-problems/
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