Alarm installed under ignition. I believe after having battery issues it may interfered with the anti theft .
My car has 260000 miles.
My car has an automatic transmission.
Hi there. Check the battery cables and make sure that they are tight and clean. If you had replaced your battery, then with an aftermarket alarm, it is best to disable the alarm before hooking up a new battery. This will prevent the alarm from suddenly setting it self off. Plus, by disconnecting the alarm you can re-enable the alarm as if it was installed. This will make the alarm be like new again but not go off. If you need further assistance with your anti-theft system, then seek out a professional, such as one from Your Mechanic, to help you.
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