Hello to everyone, since I have never had a car with electric parking brake before, it was unclear to me how to proceed there. After which I searched for a long time and asked some people. I came to the conclusion that this is quite easy even without a diagnostic device. Unlock the parking brake and disassemble the wheel. Now the brake caliper can be unscrewed with the engine. After this is solved you can also reach the screws of the motor. Just unscrew them and carefully pull them off. Now you can turn the gear back with a corresponding torx and push the piston back with the tool (or a plier). Now the work can be done accordingly. If the engine is screwed again, don’t forget to treat the screws with bolt protection (I took Loctite 243). The same applies to the screws from the saddle, in the case of the reference set there are usually new screws with fuses. (but not for the motor screws). So and now much fun when screwing.