Central locking door switch not working - 2002 S8

[ainarssems]

I think Ricky is talking about electrical switch inside on the door card that you use to lock/unlock doors not the microswitches in the lock which work when you turn key in the lock. So it should be either switch or wiring fault.
Loke this one http://www.ebay.co.uk/itm/AUDI-A8-D2...cAAOSwcl1XPO2a

But I think it only works with ignition on and only for a short while after ignition switched off so that could be a reason why it was not working while she was waiting.