Usually you change batteries when it dies out on you. But there are also indications that batteries need changing. Like it's not working smoothly, or remote signal seems weak, or the flashing battery indicator. Best if you have a spare set of batteries on hand.
change the battery in the remote you can test your remote at auto zone for free
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...
Replace the battery in the remote
In the remote on your key chain, Yes. Just remove the key ring from the remote, and use a dime to 'jimmy' the case apart. I'm not sure what size battery, just buy one that matches after you get it open. Note: It should say that in the manual (It's where I got the info).
cr2032
go to a auto parts store like autozone kragens they should have it if not go to the dealership they can get it for sure
CR2032 3 VOLTS Energizer
Open it up and look see. You now know what replacement battery to buy.
Walmart or any place that sells small batteries for watches or calculators.
Each remote takes ( 1 ) coin style battery ( CR 2032 ) or equivalent according to the owners manual
There is no battery inside the key to replace. The key actually charges through your ignition. If its not functioning you will just have to order a programmed key from the dealership.
To allow you to only allow your garage doors the manufacturer has limited the range of the remote. This means that your remote should not open any other garage door in the street