I bought a 2014 Nissan Altima. I have keyless entry and turn the car on with my remote sometimes says “incorrect key” and it won’t open car doors & won’t start. Is there a battery inside the remot starter? How much for replacing the battery?

There's a key in the remote. Pull it out you sbould be able to start tbe car with it.

You can also purchase that type of battery Walgreens if you're in hurry. They're not expensive.

Open remote, find battery #, order a bunch really cheaply at Amazon, replace battery. $5 for 10 shipped for my batteries.