I’ve crossposted this on Reddit but it had very little response. I sort of, pre-inherited my 2010, so I'm still trying to learn everything. Before my grandmother owned it, it was wrecked and more than likely stolen (I don't know the full history on it, neither does she), the key won't work on the door, there's no keyless entry fob (the key has the circular but that goes in the fob, but is broken off), but the key works with the ignition. Any time I open any door, the side lights and headlights will flash, interchanging, continuously for about 3/4 minutes or until I turn just the side lights on, I'm pretty sure it's the anti-theft system throwing, I had to replace the horn and stop fuse to have brake lights, but the horn was also pulled because it wouldn't stop. So does anyone know what my potential options with this are? I'm so sorry, I'm just trying to stop this from occuring, because it drains my battery. I’m just desperate lol.

 

You'll need to purchase a new keyless entry fob and go to a locksmith to pair to the car to disarm the alarm. before entering the car.

 

Thank you so, so much. That’s what I was thinking, but I wanted to be sure I was correct before spending the money and potentially not working lol