The front-left button boasts auto and manual mode, so you can control the front-left window by both manually and automatically. If the switch doesn't work after installation. please follow these simple steps to let your car recognition this new electric parts;
1.Insert the key to turn on your car power only (not engine), then you should press and hold the front-left button about 10 sec.
2.Then change to pull up the same button(front-left) and hold it for 10 sec.
3.After all the above-mentioned procedures, please restart your car.