Yesterday, I pressed the door unlock button on my fob, and the trunk opened along with the doors! Confirming I wasn't a) crazy, and b) hitting the trunk release (which wouldn't make sense because it's a "hold" button), I closed the trunk and tried it again. Sure enough, it opened again. Then last night, it actually opened WHILE I was driving (no button pressed).

Any guesses at a cause or how I can diagnose it?

Thanks in advance.

 

I should mention this is a 1999 Jetta IV GL.

 

Do you happen to have a system in your trunk?!?! I had a similar problem at one point in time ... my system was actually hitting so hard that it would pop my trunk and it eventually busted the truck latch! However I did have 4 12s in the trunk so yea.

 

hehe that must have pumped! ok. umm. have ur keyless entry system checked. you dont by any chance have a rogers phone that you were on all of those times? because my rogers phone sqrews up all sorts of electronics. moniter, radio, tv......

 

KEyless entry.. But your doors opened with your trunk.... That cud be dangerous lol