2005 e4 buzzer issue

@AssyRequired Thanks for the reply and the suggestions.

Here’s what I did:

I flipped on the master breaker. Ignition is off. Faint beep started. I disconnected one of the wires going to the e-brake switch. Faint beep got even fainter. I’d say sound was reduced by 50%, but it was still audible. I then disconnected the second wire. The beeping stopped. Note that the first wire is still disconnected, so the e-brake switch is completely removed at this point.

I touch one of the wires back to the terminal, the faint beep at 50% volume immediately starts up. I then hold the second wire to the other terminal (both are touching at this point), and the faint beep fully returns. I remove both wires, beeping is gone.

To further test this, I quickly wired up a switch I have laying around. Connected it and no faint beeping. I then activated it a couple of times, and the beeping was loud as it should be.

So at this point I’m guessing that the switch is bad. It looks totally dry, but maybe some water got in there somehow. I’m going to leave it out in the sun all day in hopes that whatever is in there will dry up.

In case that doesn’t work, any idea on where I can purchase a new one?

Thanks again, I really appreciate the help!

Oh, and thanks for the compliment on the display! While trying to remove it, I accidentally cracked the original glass. Of course as soon as I had it out, I realized my mistake. Luckily I was able to tape the pieces back together and use it as a template. I then went to a local glass shop and they recreated it for $5. After I went to a local sign shop and had a vinyl sticker made to simulate the black surround. Cost me $3. That didn’t work out too great as there are small air bubbles that are visible, but it’s good enough. I then used acrylic caulk with silicone from Loctite to seal it all back up. Came out great!