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・Fair and transparent pricing

Get a quote

What others are asking

Q: I need the torque specifications for the caliper bracket bolts, banjo bolt, and caliper slide bolts.

The caliper bracket bolts are 125 ft lbs. The banjo bolt for line connection is 35 ft lbs. The caliper slide bolts are 26 ft. lbs.

Q: Is it okay to turn the rotors with a car that has 23k miles and low pad warning light

Hello. You may have performance type brakes with ceramic pads and holes in the rotors surface for heat dissipation. These need to be replaced and cannot be resurfaced in most cases. If you have normal brakes with no holes in...

Q: My brake lights don't turn on when I hit the brakes. What is wrong and how much to fix this problem?

Hello there, Hello there, many different faults will cause your 2013 Kia Forte brake lights to not illuminate when you press the brake pedal. Having to replace the bulbs multiple times is not a normal issue and may indicate there...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.