I have one rear caliper piston that is stuck. Seems to have been that way since I bought the car (3 years ago) and when I went in to change back pads, I saw a metal backing plate with no pad material on it. Tried to pry back the piston, but it's rusted and stuck. I figure if I do get it to move, it will only leak because of all of the corrosion that is on it.

Do I need to replace both rear calipers or can I do just one? I was thinking of replacing just the one with a rebuilt ATE if possible. I'll be putting in new pads and new rotors when I do the job.

I've heard that you always do the same work to both sides when you're doing brake and suspension work. I know this obviously applies to pads and rotors, but does MB require both new calipers if they're the same brand?

Thanks!
Neal

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