its been doing this for a while now. i just figured out that it is the ebrake...i had thought it was in the dash but it isnt. i wonder if adding an aftermarket ebrake handle will fix it?
I always just push in slightly and turn it. Grab it with your thumb and index right on the end. Its worked on 4 different mustangs Ive had. Every damn one of them did it.
Mine does it too. Mostly between 2000-2500 rpms. Dealer offered to replace the handle, but those gorillas would probably end up messing something else up. The center console would have to be removed. I have a little piece of paper that I roll up and stick it in the gap between the handle and button. Turning it didn't work for me.
The Aftermarket e-brake handle does not replace the button. At least MGW's doesn't. I think it just slides over the top of the stock handle.