-Faulty brake master cylinder: The master cylinder is responsible for pressurizing the brake fluid and sending it to the calipers. If it's faulty, it may not be able to generate enough pressure to activate the rear brakes.
-Faulty brake booster: The brake booster is a vacuum-powered device that assists the driver in applying pressure to the brake pedal. If it's faulty, it may not be able to provide enough assistance, making it difficult to apply enough pressure to the pedal to activate the rear brakes.
-Faulty rear brake calipers: The calipers are responsible for squeezing the brake pads against the rotors to slow down or stop the vehicle. If they're faulty, they may not be able to apply enough pressure to the pads to generate enough friction to slow down or stop the vehicle.
-Faulty rear brake rotors: The rotors are the discs that the brake pads press against to slow down or stop the vehicle. If they're worn or damaged, they may not be able to generate enough friction to slow down or stop the vehicle.
-Faulty brake pads: The brake pads are the material that presses against the rotors to slow down or stop the vehicle. If they're worn or damaged, they may not be able to generate enough friction to slow down or stop the vehicle.
-Faulty brake lines: The brake lines are the tubes that carry the brake fluid from the master cylinder to the calipers. If they're kinked or damaged, they may not be able to allow the brake fluid to flow freely, which can prevent the rear brakes from working properly.**
