I just went out of moved my car after its had been sitting in the hard rain all day (got a little shower from the targa leak) and after I turned the car off I spent a little while rifling through my backseat for my phone charger. I opened the door, got out and tried to lock the door but it kept popping back to unlocked after I pressed the button or tried to lock it manually. I thought it might be some kind of short from the water that leaked in but after a littler while I noticed my lanyard hanging from the ignition. I took the keys out and sure enough it locked. I never knew about this feature, why is it that toyota thought of it 16 years ago and brand new cars today still don't?