2013-2014 Cayenne – Manual

2013-2014 Cayenne – Manual

Page: 165

Brake booster
The brake booster assists braking only when the engine is running.

When the car is moving while the engine is not running, or if the brake booster is defective, more pressure on the brake pedal is required to bring the car to a stop.

Moisture, road salt or grit on brakes affects braking.

Brakes will dry after a few cautious brake applications.

Wet Brakes
Driving through water may reduce the traction. Moisture on brakes from road water, car wash, or a coating of road salt or grit may affect braking efficiency.

  • Cautiously apply brakes to test and dry the brakes after exposure to road water, etc.

Loss of Braking Power
The brake booster is ready for operation only while the engine is running.

If the engine is switched off or there is a defect in the brake booster, much greater force has to be applied to the pedal when braking.

  • Vehicles with defective brakes must not be towed and must be transported on a flat bed.

For information on towing:

  • Please see the chapter "TOWING" on page 330.

Brake wear
Your car has excellent brakes, but they are still subject to wear. The rate at which they wear depends on how the brakes are used.

  • Have the brake system inspected at the intervals recommended in your Maintenance Booklet.

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 wear warning message USA

Brake wear warning message Canada

A warning message will be displayed on the multi-function display of the instrument panel if the brake pads are worn, excessively.

  • Do not continue to operate the vehicle. Have your authorized Porsche dealer inspect or replace the brake pads.

For information on warning messages on the multi-function display:

  • Please see the chapter "OVERVIEW OF WARNING AND INFORMATION MESSAGES" on page 140.

Brake pads and brake disks
Wear on the brake pads and brake disks depends to a great extent on the driving style and the conditions of use and therefore cannot be expressed in actual miles on the road.

The high-performance brake system is designed for optimal braking effect at all speeds and temperatures.

Certain speeds, braking forces and ambient conditions (e.g. temperature and humidity) can therefore cause the brakes to "squeal".

Obstructed Brake Pedal
Unsuitable or incorrectly installed floor mats or objects can obstruct the movement of the brake pedal or prevent application of the brake pedal.

  • Do not obstruct the pedal travel with floor mats or other objects.

Wet Brakes
In heavy rain, while driving through water or after leaving a car wash, the braking action may be delayed and increased pressure may be required.

  • For this reason, keep further back from the vehicle in front and "dry" the brakes by applying them at intervals. Make sure that the traffic behind you is not affected.

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