Doors unlock themselves !

[imponte]

Hi. I have a problem. When i locked the door, after several minutes or immediately doors unlock themselves. And keep unlocking themselves. I have a aftermarket radio with PAC kit and aftermarket speakers, subwoofer and amplifier. I was disconnected them, still has problem. Yesterday night i just disconnected the battery and today re-connect. Now i'm good, no problem. But it may occurs. What is the problem, bad BCM? or what.
And one thing more, today i pressed the unlock button and car act like 2 times unlock. Like confused. But there is no issues on keyfob. Because i removed the battery from keyfob, and still had.

[fhrex]

possibly unlock button on key fob/transmitter sticking or short within transmitter? or bcm could be malfunctioning?

[imponte]

Originally Posted by fhrex

possibly unlock button on key fob/transmitter sticking or short within transmitter? or bcm could be malfunctioning?

But i was removed battery from keyfob, and 1 minutes after still unlocking itself. So, i dont think it is keyfob. Door switch, sensor or BCM i think.

[0stones0]

What position are your windows in? If the windows aren’t all the way up, this can sometimes occur.

[imponte]

Originally Posted by 0stones0

What position are your windows in? If the windows aren’t all the way up, this can sometimes occur.

My window was fully closed, but i will recheck them.
After remove and re-connect the battery cable, it seems good now. I'll control the car every 1-2 hours.

[InFiD3ViL]

I dad a similar issue, but mine would lock and also unlock themselves randomly. It wound up being a corroded and eventually broken ground wire in the driver side kick panel and door harness, at the hinge area. It eventually progressed into loss of window controls, driver door speaker and mirror control. It also caused issues with the door position sensor, which lets the car know if the door is open or closed and causes other issues, such as radio staying on after car is off, dome light staying on, and DIC message that your door is open.

But it all started with the locks. On mine it was caused by the sunroof drain backing up and getting water into that main harness and X500 connector in the door hinge area. I could reproduce the issue by using my hand to move and shake the harness and X500 connector that connects the harness to the door.

Your issue could be totally unrelated to mine, but I figured I would at least give you a place to start.

[imponte]

Originally Posted by InFiD3ViL

I dad a similar issue, but mine would lock and also unlock themselves randomly. It wound up being a corroded and eventually broken ground wire in the driver side kick panel and door harness, at the hinge area. It eventually progressed into loss of window controls, driver door speaker and mirror control. It also caused issues with the door position sensor, which lets the car know if the door is open or closed and causes other issues, such as radio staying on after car is off, dome light staying on, and DIC message that your door is open.

But it all started with the locks. On mine it was caused by the sunroof drain backing up and getting water into that main harness and X500 connector in the door hinge area. I could reproduce the issue by using my hand to move and shake the harness and X500 connector that connects the harness to the door.

Your issue could be totally unrelated to mine, but I figured I would at least give you a place to start.

I checked the ground wire. It seems okay. There is no issue now after battery reconnect. Im thinking the keyfob the issue. Because when i walking arounda the car, keyfob in my pocket, this issue has become. Maybe car thinking the keyfob is inside the car, then its unlock the car.

[InFiD3ViL]

Originally Posted by imponte

I checked the ground wire. It seems okay. There is no issue now after battery reconnect. Im thinking the keyfob the issue. Because when i walking arounda the car, keyfob in my pocket, this issue has become. Maybe car thinking the keyfob is inside the car, then its unlock the car.

As long as it's not doing it anymore then it should be ok. Hopefully you got it sorted out. I wouldn't wish my previous issue on anyone else.

[FasNuf]

Maybe unrelated, but here are sections in the operators manual in your glovebox that should tell how to program the locks for functions similar to this. For example, I have my locks programmed so I cant lock them with the door button, but have to use the fob to lock the car. This hopefully will prevent me from locking my keys in the car.

[imponte]

So far so good. After reconnected the battery, it seems good, thank you all !