Symptoms of bad brake calipers include unusual squeaking and squealing sounds and jerking that occurs during braking. A brake pad that is difficult to press down is also typically a sign of a caliper problem. Additionally, flashing brake lights can signal possible caliper problems and should never be ignored.
Other symptoms of a bad brake caliper are premature brake pad wear, leaking brake fluid in the caliper pistons and the car pulling to the side during braking.
Calipers can stick because of a lack of lubricant, which causes the same symptoms as a malfunctioning caliper. Before replacing a caliper, car owners should ensure that all moving parts are clean and properly lubricated.