Dear,
Thanks for contacting us and apologize for the late response.
1. yes, it will retain factory chimes for door open, signals, and headlight on reminder.
2. yes, it will dim with headlights on.
3.If the plug of the camera video out cable of your original car is the same as ours camera video in,then it can support your factory backup camera.
4. you need use our touch screen.
5. this unit will fit your car perfectly.
Instant payments are very important; the earlier you pay, the sooner you will get the item.
Please feel free to contact us, we are always at your service.
Looking forward to your purchase.
Have a nice day.
по
Seicane