The car alarm in my vehicle is going off and I don't know why.
This could be caused by the hood switch. Hyundai has a technical service bulletin (9-BE-026) where the rubber bumper that keeps the hood switch depressed needs to be replaced with a new improved thicker one. My recommendation is to have a mechanic, such as one from YourMechanic, interrogate the alarm system and make the necessary repairs in order to avoid unintended alarms.
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