[Avi5500]

Hello friends,
My car was due for brake pad service,so I gave my car to the local bmw service center and got my brakes pads changed.
Before giving my car I could see the warning message every time I turned on my car for my b.pads, windshield washer fluid and now my Hud, rear DVD system, my trip computer, vehicle status.. and couple of features doesn't work in my car, whereas the music system works, phone over Bluetooth works but I can't see my last dialed number of my dash. Some features work fine in my car and some like my rear DVD system doesnt even boot up. I am very concerned can anyone please help!!