1.Whether steering wheeling control works after installation? Yes, of course,it will works .And easy to switch songs, channel and adjust volume you a safer and more enjoyable journey. 2.Do I need frame to install it? No, The head unit is totally designed according to the original factory head unit panel, it will fit your car seamlessly and perfectly, no need to cut the dashboard and no need any frame. 3.Why you ask me to send the photo of my car dashboard(old radio)? Because our this item is the special unit for your car ,so we need check if the frame is fit, and we have our own factory and professional engineer team. We not only for selling, but also have a strong after-sales team to support our buyer. Our company's tenet is "enjoy your car life" 4.What about the warranty? Our produce have 2 years guarantee, and any question, please send us a message ,we have professional engineers wiling to suport you at any time. 5. Whether support my original car info Yes ,it is also support the fans information，door information，speed info and so on.