The central door lock is a must-have product for any vehicle to upgrade using convenience and driving safety. This central door locking system allows the driver to lock / unlock all the doors and release the trunk within a certain distance of the car by pressing a button on the remote control. In arming status, press the lock button for three seconds, the direction light would flash three times for finding the car. This central door lock is universal for 2 and 4-door vehicles and suitable for all vehicles with 12 Voltage. With the 360-degree rotatable head of motor, it is easy to install. The central door lock comes complete with all necessary hardware for installation. Attention: the remote is universal while the key blade of the remote is only applicable to automobiles of Audi, Skoda and VW including Passat, Golf, Polo and Bora. If you plan to apply it to cars of other brands, a replacement of the key blade is needed. But do not worry because it is pretty easy to do so. Just use a screwdriver to undo the screw, replace the key blade with a new one and tighten the screw. It is so easy.