Hey NOOB here. I just bought a 2019 Ford F-150 XLT FX4 last weekend. When I was pulling into my garage tonight, it started making this beeping noise and has not stopped, whether the truck is on or off. It sounds like it's coming from the rearview mirror/ top speaker area. I tried unplugging the rearview mirror, but that did not work. Has anyone heard this constant beep before and know how to fix it???? PLEASE HELP!

 

I would start looking for some sort of aftermarket electronics that was added by the previous owner.

 

You’re right! Figured out it was actually my EZ PASS! I’ve had it for years, never knew they made noise! Thanks for the suggestion

 

Interesting! I've had an EX-Pass for decades and none of mine ever made any noise!