The integral brake is a parking brake that is on the inside of a disk brake system . This system use cables to engage the parking brake just the same a drum brake system.
YES
The brake light on most vehicles is not only an indicator that the parking brake is on, but that there is a problem with the system.
it may be because there is another problem in the brake system
the parking brake is either sticking or the sensor is bad This could also be a warning that there is something wrong with the braking system. The light is not only for the parking brake in most vehicles.
The most common parking brake pulls a cable that mechanically activates the rear brakes. The cars hydraulic system is not involved with this.
Parking brake is on, Brake fluid is low, Hydraulic failure of the brake system.
Generally a parking brake system would be the parking brake lever (either a hand activated lever with a ratcheting lock and release lever, or a foot brake pedal with a ratcheting mechanism that releases when pushed to its maximum.), cables continuing from the parking brake lever to the rear drums, and the parts inside of the standard rear drum brake that are activated by pulling the cables. This system is used to prevent a car from moving when parked on an incline, or to prevent the transmission from jamming in Park which can happen when towing a load or parking a heavy vehicle on a hill.
The law in the UK states that there should be two independent braking systems actually it is not a parking brake but an emergency brake
The most common parking brake pulls a cable that mechanically activates the rear brakes. The cars hydraulic system is not involved with this.
It means that your parking brake is on. :-) Or there is a problem with the brake system, as in low brake fluid.
If the cable is broken and parking/emergency brake is still ON, then they are rusted in place ! - Your emergency brake system needs urgent work.