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Symptom K: Jammed Piston In Brake Caliper

WARNING: This page does not describe the selected car, but rather 92 other vehicles, including the 2002 BMW Z3, 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW Z3, and 2001 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM K: JAMMED PISTON IN BRAKE CALIPER

Cause Solution
Dirty Floating Caliper Recesses, Damaged Caps Remove & Install, Repair Or Replace Floating Calipers
Brake Disc Not Aligned With Floating Caliper Check Floating Caliper Installation
Corrosion On Pistons In Floating Calipers Remove & Install, Repair Or Replace Floating Caliper