On one of my remotes the lock don’t work, and the other which worked but had been lost for several months under a pile of paper and now showed up don’t work at all. Are there batteries inside them? How to change them? (10 yr old car. Visit a dealership and pay them >$100?)
It is a coin style battery, usually you can get two for under $5 at lowes/home depot. Walgreens/CVS/etc carry them too. Just unscrew the back, open, pull the battery and read the number on it.
Usually hearing aid or watch batteries in them. Dealers will charge you $40-$60 or more for a replacement. When I called the Ford dealer and got his price I passed on it. Went to Amazon and got them for $20 plus shipping. Also got the case with no guts since it seems the key ring area on the remote always breaks. Move the guts from the broken remote to the new one and I’m in business. The cases were $2.99 on Amazon.
Yes batteries, usually aaa-batteries.
Batteries Plus. They’ll identify the battery, change it and test it to make sure it works (provided you bring the correct vehicle).
Slightly pricier than the internet. Worth every dime . . .
There’s how to videos on You Tube for several different types of battery replacement in remote keys. Worked with mine as I was worried about breaking plastic clips that I didn’t need to.