2003 bonneville - door lock/unlock without touch

[awu10]

Hi, All:
I have 2003 Bonneville. This problem happened once a few weeks ago. Yesterday, it happened again. I came home, open the trunk, when I closed the trunk, I heard the door lock and unlock several times, it just looks like someone pressed the keyforb. When I opened the hoop, the light was on and off several times again. The interior light was on more than one hour. Today, I found the battery is completely dead. After the battery is fully charged, I drove to the local road, when I was driving, driver's side door was unlocked from locking position. Later, one of passenger’s side door was unlock too.

Anyone can give some thought for this problem?
Thank you
awu10

[jackpinesavage]

Replace the fob. The switch is going to hell. Search on eBay with the code molded into the back.