Hello! I have a problem child in our workshop and wanted to ask if someone here knows or has a tip or already had…. Vehicle would be a Skoda Karoq 1.5 TSI with MKB: DADA and the KBA number 8004/ASO. Year of manufacture is 2019. Vehicle stopped in the middle of the country road with fixed brakes at the front left and at the rear right. Error memory was completely empty and after battery reset everything was free again for a short time. After a few brakings however, the brake again completely fixed, again front left and rear right. Again no fault memory and even after replacement of the main brake cylinder no improvement. It feels as if after each braking the brakes only slowly become slightly free. And when trying to vent the brakes, it was found that on relevant brake calipers hardly any brake fluid comes out of the vents. My current assumption lies on the ABS block incl. control unit. But before wild everything new I wanted to ask here if anyone had any advice. Had never heard of such a mistake in a Karoq. I would be very happy about answers!