New one only costs $40 plus tax, just replace it

The interal parts especially electronic parts may be defective with the time, the heat or cold weather, it is not worth to repair.

https://www.amazon.com/Keyless-Entry-Door-Lock-Weatherproofing/dp/B09P54CLDQ/ref=sr_1_4_sspa?crid=19PZA59N8EEUT&dib=eyJ2IjoiMSJ9.vJrwviOnNSIH-0awh9Tguv9e4I4OotjKt8b2Z3vKnOVuPWoOtrlGjETIYyD6iXxclypgR9e28HTDvV0Gx4vaiNQuM-bf3uQ70TFjIP9HeyIL5WFY6TYRpJxQ_ITV6xxw82pUsi-XxEnAVS3CqBjJHYF32fWUzYlYfq_LZ4-FUmDsr6ZIH3m-BmPdPZEddjnoA2wC5Yw6P9UP-3O-v326yEmNuPR8pn0cEV23QVnq7grU-3UXfEPgDSBjUis00lDVR9Z33zlXnp86qXIubpscC56VJ7o7LMqDcEYcAFuloy8.HOm-0LHHrv-2un0e8ePD3jhKELKfu5n8cp4d1Dztf8o&dib_tag=se&keywords=lock%2Bpassword&qid=1753900385&sprefix=lock%2Bpass%2Caps%2C161&sr=8-4-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1