In my last thread you saw I was having a problem with roof and as it turned out it was the micro switch that my son diagnosed with his high tech scanner, I don’t want to bother him every time, so I please need recommendations for a good hand held obd2 reader that will work with 2009 e89, and that can register a new battery, and open the boot if it locked down because of a roof/sensor problem and hopefully also have some other functions.