A brake line may be broken missing or loose.
No, they use air pressure or actually the lack of air pressure to stop the vehicle. The brakes are fully on until pressure builds up in the tank releasing the brakes. When you push the brake pedal this removes air from the system and applies the brakes.
A car has to have brake fluid to allow for the effective operation of the brakes to stop the car. When we apply pressure to the brake pedal, brake fluid, which is largely incompressible, will transfer that pressure to the pistons that operate the in the calipers or the pistons that operate the brake shoes. Further, the fluid must be of the correct type for the system in which it is used. The continued safe operation of the brakes may be compromised by the wrong fluid.
Bleed the brakes, adding fluid until clean fluid comes out from all four tires.
First thing I would do is top off the brake fluid. As your brake pads wear down, the system requires more brake fluid to maintain pressure to apply the brakes - and the lack of pressure could make the light go on. You will also find after adding fluid that you don't have to press the pedal as hard to make the car stop. If your brakes are making any chirping or squeaking or (worst) metal-on-metal noises, get to a brake shop and get the pads replaced.
The accumulator stores brake fluid under very high pressure. An electric pump keeps the accumulator pressurized with brake fluid. When you press the brake pedal, pressurized fluid from the accumulator operates the brakes.
Instead of using hydraulic brake fluid to apply the pads to the brake drums or discs, air pressure is used.
Your brake fluid is how the brake system converts mechanical force of your foot on the brake pedal, into hydraulic force that applies your brakes. Without fluid, your hydraulic brakes will not function.
If you are driving and need to brake, but find your brake pedal is getting closer and closer to the floorboard, you need the check your fluid. Eventually your brakes will not have enough fluid to create the pressure needed to apply the brake pads properly and you risk accidents.
Light is usually comes on, when there is a problem with pressure in brake lines. Inspect the brake fluid level, and check for leaks.
a brake compensator aka proportioning valve.do to the fact that the front brakes useually do 70 percent of the stopping the compensator reduces the pressure of the brake fluid from the master cylinder to the rear brakes being they need less hydraulic pressure to stop. it also acts as a saftey valve in case a brake hose or line bursts, it will let to brakes retain pressure for emergency stop
a brake compensator aka proportioning valve.do to the fact that the front brakes useually do 70 percent of the stopping the compensator reduces the pressure of the brake fluid from the master cylinder to the rear brakes being they need less hydraulic pressure to stop. it also acts as a saftey valve in case a brake hose or line bursts, it will let to brakes retain pressure for emergency stop
In the brakes.