While there are a few different reasons that a keyless entry remote might stop working, most of them are pretty easy to check yourself. The most common problem with these car key fobs is that the batteries just go dead over time, in which case replacing the battery should fix the problem.
Other key fob remote problems are more complicated, but it's still possible to fix them. Here are the five things you'll want to check first when your remote stops locking or unlocking your car doors:
This is extremely basic stuff, and it won’t apply to a lot of people, but the first step in figuring out what is wrong with a car key remote is to verify that the problem is actually the remote. So if you have a second remote, and you haven’t already done so, you’ll want to check whether or not it works.