I've experienced this issue on my car too. I'm new to A8 ownership, this is my first, which I've had for a few months now. The drivers door button was not responding at all and so I was contemplating total removal, etc. Then I discovered this thread, gave the WD40 thing a go and I have since had intermittent function :)
Then, this morning, a below zero frost meant that the button was frozen solid, they all were :eek:.

Recently I've been thinking about more WD40, to be then followed through with compressed air to blow out any residual debris, from the switch assembly.
I'm also wondering if the switch/handle assembly may have a drain hole, which over time, may have become blocked. I'll look underneath, next time I'm looking into the button issue.

Mine needs doing again on the front passenger side.
It is so annoying. Pushed for time to spend on the car at the moment though.

They are poorly designed on the pre 2010 cars. I had one go on a 2008 3.0 tdi and had an independant fix it. New handle and paint. To be honest I would just leave it now. Especially since that independant 'Audi specialist' in Stockport made a total pigs ear of it. It went back four times as the handle came off in my hand. In the end, a main dealer did it for me foc.

On my 2009 s8 both doors on the near side handle buttons have failed but they were done on audi warrantee.

Same problem here , button on rear drivers side is solid.
Its even worst , when I use any of the other buttons to lock the car it automatically unlocks.
Any advice ?

Are these handles sided or are they the same all round?

Thanks!

The handles are the same all round x3 passengers, the drivers handle has a different part number.

Thank you

:)

This is a job i need to do on the A8 I just picked up. Drivers unlock button does not work.

VSDS throws up an error on the drivers door which is the one that does not work but after reading a thread a few hours ago I was amazed to find out that they handle should also act as a prox sensor.

I have been lifting the handle once to unlock and then again to open.

I didnt understand until I went out to the car and placed my hand under the rear handle and the car unlocked and then just lifted the handle once to open,

is this linked to the dodgy lock button or a seperate issue,

If i can find a handle in the same colour and replace is the prox sensor part of the handle assembly or a seperate part,

Thanks

matt

Have a look on ebay.de I just picked up a brand new handle, painted in the colour I need, for £1.84!

Holy crap thats cheap., Not bothered what colour it is for that price, need an ami as well so defo having a look.