Hello,
Many times if you disconnect the negative battery cable and reconnect after a minute the system resets. When that happens you will be able to start the vehicle.
Also there should be a car alarm fuse in the fuse box under the hood. You can disconnect that as well to disable to alarm.
You might find this article helpful:
https://www.2carpros.com/articles/how-to-reset-a-security-system
Please let me know of any questions.
Thank you.
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Friday, August 20th, 2021 AT 7:04 PM