More than likely this is one of two issues. First it could be the antenna that the failed but more then likely if the keys don't work when right next to the vehicle then the module is most likely failed.
I would suggest replacing unlocking the vehicle with the key and the alarm will go off and then sit in the vehicle and try the fob again. If it still does not work then the module will need to be replaced.
https://www.2carpros.com/articles/how-to-re-program-a-key-remote-fob
Please see the process below from the manual on how to replace this module.
Please let us know if you have other questions. Thanks
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Tuesday, July 6th, 2021 AT 4:23 PM