I installed a Camecho Android Head Unit in my 2009 X3. After connecting everything to the head unit I went to plus in the green wire for the HVAC and hot air started blowing hard. I unplugged it. Then I tried to turn the car off but it kept running even without the key. I unplugged the batter and it kept running. Then I heard a pop and water started draining out of the car. But it was still running. Eventually I unplugged the small white connector from the HVAC and the car turned off. Can someone explain and assist me? Please?

Morning Derrick

Welcome to the Forum

Never heard of the manufacturer but most of the Android units are similar so the only thought I have is you didn't connect it up right ? First fear is that damage has been done to your car so retrace your steps and put everything back as it was then see if the car starts, runs and stops as it should, fingers crossed it will. Then find what popped and let water out, don't run the car to long don't want it over heating check everything carefully.

Now to the Android unit (a) is it new? (b) it should have had instructions with it ? or a website where you can watch a video.

I have fitted 3 of these units 2 into friends E70's and 1 into my own all were straight forward and simple to fit all are Chinese in origin and sold under differing brands. All of them work really well and allow the use of both the in car OEM system and Android apps

Dave