Dat

Okay this is starting to make more sense. We seem to have got an answer to the original question along with some reasoning. Thanks for all the input.

Just so I’m clear on this. Can I push the piston back in ( not rotate ) without the use of any diagnostic device on a 2019 superb ?

So can I just push the piston back in manually without using a diagnostic tool ?

All along I’ve had the feeling that the electronic method of retracting the piston is a service tool for dealerships that allows them to have a way of doing it without any real skill and it’s quicker and cleaner than push/wind. The pistons on mine have the cut outs to take the winding back tool but now I don’t know whether to push or push/wind. How can I tell if I have TRW or ATE ?

There are a few different OBD Elevens. Which is the one to get ?

That’s really useful information. Thanks.

I was asking that same question but I didn’t really get a satisfactory answer. I think the method of using a diagnostic tool to disconnect the electric brake is a quick and easy way for professionals to wind the piston back in but I reckon it’s still possible to do it the old way of pushing and winding the piston back in.

I need to change the rear disks and pads on my car. I’ve never had a problem doing this job on previous cars but this one has the electric brake. I’ve read a couple of descriptions online and both make reference to plugging the car into a software package to put the parking brake into a service mode. Does anyone know if this is the only way of retracting the calliper or can it be done by pushing and rotating the cylinder back into the housing ?