There may be a previous post on this but I was unable to find anything. I have my Insight set for walk away lock. A couple of days ago when I got out of the car instead of the doors locking before the walk away lock, the car started to a make a long warning sound like I had left the key in the car. I park in the garage so I didn't pay much attention but when I got into the house I noticed that the key was in my pocket so it couldn't be it. I went back out and tried the drivers door and it was unlocked and all the other doors were closed properly. Then I noticed that I had left my cell phone in the car. I removed the phone and everything worked properly. Does the car give a warning for something like this ?