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Why do the brakes not release when foot off pedal?

There are several possible reasons why your car's brakes may not release when you take your foot off the pedal. Some of the most common causes include:

* A faulty brake master cylinder. The brake master cylinder is responsible for hydraulically amplifying the force you apply to the brake pedal. If the master cylinder is faulty, it may not be able to generate enough pressure to release the brakes.

* A faulty brake booster. The brake booster is a vacuum-powered device that helps you to apply the brakes. If the brake booster is faulty, it may not be able to provide enough assistance to release the brakes.

* A faulty brake caliper. The brake calipers are responsible for squeezing the brake pads against the rotors to slow down or stop your car. If a brake caliper is faulty, it may not be able to release the brake pads properly.

* A seized brake caliper slide pin. The brake caliper slide pins are responsible for allowing the brake calipers to move freely when you apply or release the brakes. If a slide pin is seized, it may prevent the brake caliper from releasing the brake pads.

* A damaged brake hose. The brake hoses are responsible for carrying brake fluid from the master cylinder to the brake calipers. If a brake hose is damaged, it may leak brake fluid, which will reduce the amount of pressure that is available to release the brakes.

* A low brake fluid level. If the brake fluid level is too low, it may not be able to provide enough pressure to release the brakes.

* Warped or worn brake rotors. Warped or worn brake rotors can cause the brake pads to stick to the rotors, preventing them from releasing properly.

* A problem with the release mechanism. The release mechanism is the part of the brake system that disengages the brake pads from the rotors. If there is a problem with the release mechanism, it may not be able to disengage the brakes properly.

If you are experiencing this issue, it is important to have your car inspected by a qualified mechanic as soon as possible. Driving with faulty brakes can be dangerous, and it is important to get the problem fixed before it causes an accident.