[header] How to open locked cars [title] Straighten a wire hanger. [step] This method will work best for vehicles with a vertical manual lock-meaning a lock that you pull up to unlock or push down to lock. These locks are usually at the top of the door panel just inside the window. 
This method requires a thin but rigid tool that you can feed between the weatherstripping around the bottom of the window and the glass itself. A wire coat hanger works well, but you must straighten it first.