My remote no longer works?

Hello,

On these vehicles you can reset the security alarm system.
Just disconnect the negative battery cable and wait for a minute.
Reconnect, it should reset the system.

You can also try this method:
Press down the panic button for 2 seconds. Close all doors and use the key to lock and unlock the driver's door. This should reset the system as well.

Here is a helpful article of resetting security system:

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please let me know of any questions.
Thank you.