Join Date: Oct 2007
Location: United Kingdom
Re: GTV central locking help
If Your key has an intergral button to activate the alarm/central locking then, it's likely the small microswitch under the black bit on the key (what you need to press to remotely lock/unlock the car) has seperated from the small PCB in the key. The switch is soldered but those solder joints are the only things holding the switch fixed in place.
Every time you press the switch, you put pressure on the solder-joints which they cannot handle that well - hence over time they just fail and the micro switch comes loose from the PCB.
Simple solution; re-solder the switch and it'll work again. I've fixed more than one (remote) key like that.
There are people on eBay that can sell replacement switches or repair your key
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AUDI TT 225 Quattro aka Maddie - Sept 15 to Present