Skip the auto shop - Our mechanics make house calls

Q: Brake piston seized after brake pad change

asked by on

I recently attempted to change my brake pads. After i removed the caliper, I forgot that i needed a clamp to compress the piston, so i put the car back the way it was with the old pads and tried to drive off to get a clamp. The brake has a horrible grind now and the brake seems semi-engaged. I could not leave my driveway. I took it apart again, bled the brake a pit, it became slightly looser, but still too engaged to drive anywhere. How can i at least return it to the way it was?
My car has an automatic transmission.

A: Was this the rear brakes? Many times the re...

Was this the rear brakes? Many times the rear calipers have to be turned in with a special press that turns the piston and presses the piston in at the same time. This is because the parking brake is built into the rear caliper. Often times the parking brake in the caliper gets seized up and causes the brakes to get stuck on. Unfortunately, the only way to fix this problem is to replace the caliper.

Now, if it's the front brakes, it is possible that the sliders on the brake caliper bracket may be stuck. If they get stuck, this will cause the brakes to be stuck on. It is possible for the sliders to be taken apart and lubricated to avoid replacing the caliper.

I would recommend asking for help from one of the mechanics at YourMechanic to come to your location, run a diagnostic inspection on your brake system, and get your brakes working properly again.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Noise coming from tires

Hi there. Diagnosing this issue would require a mechanic to take your vehicle on a test drive and determining what noise is coming from your vehicle. This issue maybe related to your tires being out of balance. A qualified mechanic...

Q: Can caliper paint damage brake rotor

Only if you leave it on there. You can paint it and if it gets on the caliper, all you've got to do is turn the caliper, get some brake spray cleaner, spray it on, and wipe it off. Paint...

Q: engine knock

If there is engine knock after running low on oil and it does not go away after putting oil in it, then the damage is done. The engine bearings are bad and more than likely ruined the crankshaft, rods, pistons....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.