2013-2014 Cayenne – Manual

2013-2014 Cayenne – Manual

Page: 164

Brake system function
Your Porsche is equipped with a power assisted hydraulic dual circuit brake system with disk brakes at the front and rear.

Both circuits function independently. One brake circuit operates the front left and rear right wheel and the other operates the front right and rear left wheel.

If one brake circuit has failed, the other will still operate. However, you will notice an increased pedal travel when you apply the brakes. Failure of one brake circuit will cause the stopping distance to increase.

Brake Hydraulic Failure Recovery
Your vehicle is equipped with an emergency function in the extreme event of a complete hydraulic failure of the brake system. If your brake peddle goes all the way to the floor, do not pump the brakes.

  • Push the brake pedal down firmly and hold it in that position. A mechanical linkage activates the second circuit, and you will be able to bring the vehicle to a stop.
  • After bringing your vehicle to a complete stop, avoid driving the vehicle and instead have it towed to the nearest authorized Porsche dealer for repair.

Brake system warning light
You can check the functionality of the brake system warning light by switching the ignition to the "On" position (position 1) and verifying that the warning light illuminates.

Brake warning light USA
Brake warning light Canada

The warning light in the instrument panel lights up. A message will be displayed on the multi-function display of the instrument panel if the brake fluid level is too low, or (if the brake pedal travel has increased) one of the two brake circuits has failed.

A greater braking pressure will be required, stopping distances will be longer and the braking behavior will change, particularly in curves.

With correctly adjusted brakes and a correctly working brake system, the pedal travel to the point of brake application should be 1-3/16 in. to 1-9/16 in. (30 to 40 mm). Whenever the brake pedal travel exceeds this value, have the brake system checked.

Brake pedal

Obstruction of Brake Pedal
Unsuitable or incorrectly fixed floor mats or objects can reduce the travel of the brake pedal or prevent you applying the brake pedal.

  • Always check the movement of the brake pedal before driving and make sure that it is not obstructed by a floor mat or any other object.
  • Secure the floor mat to prevent it from sliding into positions that could interfere with the safe operation of your vehicle.
    Your authorized Porsche dealer will be glad to offer you floor mats of the correct size including a securing possibility.

In case one of the two brake circuits fails, increased pedal travel is required to bring your vehicle to a full stop.

Riding the Brakes

  • Before descending a steep grade, reduce speed and shift the transmission into a lower gear to control speed.
  • Do not "ride the brakes" by resting your foot on the pedal when not intending to apply brake pressure.
  • Do not hold the pedal down too long or too often. This could cause the brakes to overheat and lose braking power.

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