Replace the battery in two versions of Audi flip key key fob, old and new. 

Brilliant video, sorted my problem and thankfully I had one of those new batteries in the house. Problem sorted in 5 minutes. This worked much better than the other videos I watched on this. Thank You! : )

This was very informative as usual. When you took the backing slip off the battery, I remembered that I screwed that "minor" detail up a month ago. For a time, I could not figure out why one of my garage door openers wouldn't work. I figured it was just an old bad battery. I opened the unit up and to my total surprise, I had failed to remove that paper cover. No wonder that darn opener wouldn't work, I thought. 😉

Thank you so much . This worked and saved me so much money

Thank you for the help!

Great video - helped me! Thank you!

Thank you

Very clear explications! Thanks a lot 👍

Do you know if you can put the PCB and chip from the old key into the new key case? And use the new style case/housing? Thanks

Getting a key to reprogram itself is more complicated. Usually SAFE appears on the cluster and the car won’t start. If one quickly uses a standard key to start the car, the SAFE mode will disappear, but waiting too long will put the mode in no-start forever UNLESS one uses the standard key left in the “ON” position while the car battery is hooked to a charger for about an hour. I tried that with the remote fob but it didn’t work; it only worked with a standard key.