Replacing batteries in key fob?

[GlynH]

Not sure where this goes and couldn't see if anyone else might have asked the question before but how do you replace the battery in the A8 key fob?

One of my W12 keys looks to be completely flat and has never worked and now I am having problems with the other...car intermittently reports key not recognised or something similar...

It looks to be the same key fob in both my 2001 S8 & 2005 W12 and reading the latter manual it says to go to the dealer?

Surely it can't be that difficult?

Great video here;

http://www.youtube.com/watch?v=lDp1W...e_gdata_player

I am guessing mine comes apart the same way but does the key/car have to be re-programmed afterwards and if so what is the procedure?

Is it different on both D2/D3 cars mentioned above?

Thanks & kind regards,
-=Glyn=-