Need the year and model VW to answer the question.
Volkswagen Key Disassembly
There is nothing to reset. Just change the battery and if you have it in correctly it will work.
You normally do not have to reprogram the key when you replace the battery. If you do you will have to contact your VW dealer.
you have to pop off the back of the remote. i had to get someone at a dealership to do it. you know nothing is simple on a vw...
To change the battery in a Porsche key, first remove the emergency key and the cover on the back of the key housing. Change the battery and replace the cover and emergency key.
How do you change the battery in mazda 5 key?
Use your key to unlock the door.
how to change key battery mercedes-benz c240 2002
go to radio shack
LOOK for the bolts in front of the battery compartement. Use a ratchet.
Take the key to a VW parts dealer and have them cut you a new key... It is probably just too warn out to recognize the key in the door... I don't know if your talking bout the key itself or the button but if it's the buttons, get a new battery