Very odd. This morning I indulged my cruise stalk with some serious "substance abuse" - well loads of WD40 and a good thrashing. 
It then started working perfectly! Drove a couple of miles and every function worked as it should (except possibly the "resume"). 
Stopped briefly (delivering some stuff) and got back in the car, tried it when I could and it seemed to set, but then I tried to increase speed with the slider and it dropped out.  After that it wouldn't work at all. 
No opportunity to stop the car before getting home in case the system needed some sort of reset. More abuse and testing as and when I can.
Edit: been out again (looking at that RS4 http://forum.a8parts.co.uk/showthread.php?t=5963 ) and it's working again.
But the "increase" slider is intermittent and when it stops doing what it should it fails totally until ignition off/on. And the "resume" never seems to work.
Meanwhile any thought from anyone on on these 2 questions:
1. Is anyone aware of the system needing a reset of any sort after a glitch?
2. As I asked (maybe not obviously) earlier in this thread, is there any way of taking apart the switch section without taking it off the car? There are no obvious screws so I'd guess there are covers that can be levered off, or is it all glued?
Has anyone taken one of these off and investigated the faulty one to see what's wrong inside? I would given the chance - anyone want to send me a faulty one? 
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions and extended leather. Ski hatch retrofit. Aftermarket reversing camera. DVB-T and XCarlink now removed as redundant.
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (Even rarer than a D2 S8!) Oh, and a brand new engine at just under 30,000 miles on the factory one!
Finally: gone, but not forgotten.....
1998 D2 PF S8. Agate Grey/Platinum. Every option (I think) except electric rear seats, Tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon. Added Auto-dim mirror, Leather seats, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
Last edited by HPsauce; 1st February 2013 at 01:41 PM.
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