{"id":668,"date":"2019-03-05T14:42:22","date_gmt":"2019-03-05T19:42:22","guid":{"rendered":"http:\/\/hometowneautorepairandtireofwoodbridge.com\/blog\/?p=668"},"modified":"2026-06-08T11:33:42","modified_gmt":"2026-06-08T15:33:42","slug":"disc-brake-caliper","status":"publish","type":"post","link":"https:\/\/hometowneautorepairandtireofwoodbridge.com\/blog\/disc-brake-caliper\/","title":{"rendered":"Is my disc brake caliper seizing up?"},"content":{"rendered":"\n

Updated June 8, 2026<\/strong><\/p>\n\n\n\n

Does it feel like your vehicle is having trouble accelerating?<\/p>\n\n\n\n

The symptom could be tied to a few issues. <\/p>\n\n\n\n

Sometimes, acceleration problems are linked to the braking system. A disc brake caliper seizing up could be the culprit.<\/p>\n\n\n\n

What is the caliper in a disc brake?<\/strong><\/h2>\n\n\n\n

The caliper sits on the brake rotor and is attached to the steering knuckle. When you press the brake pedal, fluid goes into it and pushes the pistons against the brake pads and the brake pads against the rotor.<\/p>\n\n\n\n

What disc brake caliper problems can occur?<\/strong><\/h2>\n\n\n\n

Disc brake calipers can get overheated. Brake fluid is very corrosive, so they can break down from the inside out. <\/p>\n\n\n\n

Piston boots can rip and tear and get overheated from high and low spots from the rotor, bad brake pads, or they can get too much moisture inside of them from the brake fluid itself.<\/p>\n\n\n\n

A disc brake caliper seizing up is another problem drivers may face.<\/p>\n\n\n\n

\"Ford<\/a>
Ford Expedition rear brake and suspension<\/figcaption><\/figure>\n\n\n\n

What can cause a disc brake caliper to seize up?<\/strong><\/h2>\n\n\n\n

A disc brake caliper seizing up is caused by various factors, including dirt, lack of maintenance and rust. <\/p>\n\n\n\n

Rust that builds up over time can prevent the brake caliper piston from resending back into the disc brake caliper. It will keep holding constant pressure on the brake pad that pushes against the disc brake rotor, producing heat.<\/p>\n\n\n\n

When piston boots rip, it allows air, moisture and dirt to get in. That can lead to a disc brake caliper seizing up or dragging.<\/p>\n\n\n\n

There are also brake fluid-related problems.<\/p>\n\n\n\n

Issues can stem from the brake fluid moisture content and the brake hoses. If the brake hoses leading to the calipers collapse from the inside, sometimes it will restrict how much brake fluid flows out.<\/p>\n\n\n\n

In extreme circumstances, the brake fluid can boil and cause a very low brake pedal. This is one of the reasons why you want to change the brake fluid<\/strong><\/a> when automotive technicians are working on your brakes.<\/p>\n\n\n\n

What are signs of a disc brake caliper seizing up?<\/strong><\/h2>\n\n\n\n

Drivers may notice these symptoms when a disc brake caliper is seizing up:<\/p>\n\n\n\n