Theres a lever arrangement under the car which has the return spring for the whole parking brake arrangement. I find it odd that the pivot is out there in the open where water and snow and salt and whatnot can get on it. My 240D won't return the parking brake lever beyond halfway right now because something is stuck. I know its not the rear parking brake cables as I've been under there and wiggled 'em around. I need to shoot some PB Blaster at the pivot and work it back and forth with a hammer.

I've been burned by sticky parking brakes 3 times this year (once on each vehicle I own) so I'm not taking chances anymore. Every Saturday I go to each car and put the parking brake on and off 3 times. The problem for us is we just don't use the blasted things...

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Sadly Benz-less