I struggle with the rear flap does not open from the Keylock, from the button in the tailgate and from the button in the driver's door. I checked the rear lock is ok micro contact also from opening and closing, the micro contact opening the tailgate is good. Installation from the flap to bcm2 is approx. BCM 2 is replaced with the other is the same. In the settings mmi there is a setting of locking the rear flap, as well as moving to the closing and opening the flap does not react. In the parameters, I see how I want to open the tailgate as I press the micro-contact, how to control the opening of the tailgate from the vcds from the computer, I will open it as it would be all right. There is not a single error in the whole car, I was looking for bcm 2 encodings to change the encoding, but I did not find a setting to change anything. Where to look because I'm missing ideas