Help. 1990 300 SE, 85K miles
My factory car alarm has started going off at random. Honk of horn and blinking headlights. It's quite embarrassing. I have to stop, get out, put the key in the door and turn to disengage the alarm. I'll go another mile and it happens again. Yesterday I just opened the driver's door, it was unlocked, and it went off. The horn is behind the engine fire wall, I can't get to it to disconnect it, and brother is it loud.
I am guessing the alarm control module is failing. Where is that item and can I unplug it? If I unplug it will the car operate? Should I replace it with the factory unit or get an aftermarket installed?
Does anyone have any other ideas or helpful hints.
Thank you very much.