You need to measure the pins in the door for continuity.
or maybe a lose wire coming into the pins.
multimeter required!

 

Tape the door sensor pins down one at a time and hit those corners. You'll eventually find which one is the culprit (if it doesn't ding, then the one taped is it).

 

if you tape the pin,you don't achieve anything because it's the same thing with the door close.
he needs to push in the pin and check for continuity or zero ohms with a multimeter.

 

^ Not quite. The most common problem is that the pin isn't being pushed in far enough by the door. Thus when the OP goes around a turn, the flex of the vehicle releases a tiny bit of pressure on the pin generating the door ajar warning. Testing for continuity when parked isn't going to tell you a thing. If the taping pins doesn't identify the problem door, then maybe it's a defective pin (not likely).

 

Haven't checked on HL but I know on Jeeps, the plastic door pin is two pieces.
Going to type to explain this correctly: Had similar issue on Jeep but you could pull up on the center of the pin to extend it out more. Then when closed door, the center would adjust for proper door clearance. If slammed door, it would push the adjustment of the center pin in too much and occasionally do as discribed.