Thats been common for all rear disc brakes. Ive owned a kit like this for 20 years to do rear disc brakes. You gotta apply pressure while turning in at the same time. I picked my kit up for 50 bucks or so. But you can get cheap "universal" tool for 10 bucks that goes on a ratchet and just press hard on the piston while you turn it. Worth it for a proper kit in my opinion though.
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The electric parking brakes need a special scan tool to service. You have to go into the computer to retract the piston to put them in "service mode". They are getting cheaper I think you can get one for like 100 bucks now. But still... needing a computer to change brake pads is dumb.