You will need to remove the entire handle from the car. There's a screw in the door jamb and another at the front of the handle that will necessitate the removal of the inside door panel. Once the handle is removed, look at the back of the handle and you'll see a circular plate that holds the push button in place. Push down on the plate and turn it which will release it from the handle. Pull off the plate and spring and you'll end up with the barrel and lock. Finally, there's a spring loaded retainer that holds the lock in place located at the back of the cylinder that needs compressed to release the lock from the barrel. Insert the key in the lock and it should pull out of the barrel. Installation is the reverse of the above.
