How can I lock my car doors from the outside when the car is running.

I've tried to lock manually on the doors, but it is like the car is possessed, it keeps unlocking. All I want to do is to be able to start my car, let it warm up while I am in the house or office. And I want to do this without the fear of having my car running without it being locked. Thanks for your suggesting.... is there any other recommendations?

If you don't have an actual metal key to lock it from the outside after starting and closing door...... Enter vehicle from *passenger* side ... start engine & lock doors manually then close passenger door.. or just drive it cold!!

Thanks.... I will give these two things a try.

Well there's got to be a way to lock the car if you are driving down the road!!!!... Hook seat belt or read owners manual...it's got a real key inside the fob, that should do it.... You'll figure it out...