Don't Jam on the Brakes. Emergency braking does not mean pushing down on the brake pedal as hard as you can. That will only keep the wheels locked up and cause a skid. If the wheels are skidding, you cannot control the vehicle. 2.17.3 – Brake Failure Brakes kept in good condition rarely fail. Most hydraulic brake failures occur for one of two reasons (Air brakes are discussed in Section 5.) Loss of hydraulic pressure. Brake fade on long hills. Loss of Hydraulic Pressure. When the system won't buildup pressure, the brake pedal will feel spongy or go to the floor. Here are somethings you can dob Downshift. Putting the vehicle into a lower gear will help to slow the vehicle. Pump the Brakes. Sometimes pumping the brake pedal will generate enough hydraulic pressure to stop the vehicle. Use the Parking Brake. The parking or emergency brake is separate from the hydraulic brake system. Therefore, it can be used to slow the vehicle. However, be sure to press the release button or pull the release lever at the same time you use the emergency brake so you can adjust the brake pressure and keep the wheels from locking up.