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Cayenne

2017-2018 718 Boxster – Manual

2017-2018 718 Boxster – Manual

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Page: 69

Reduced braking action
Following a long drive over salted or gritted roads, a coating may form on the brake disks and pads that significantly reduces friction and therefore the effectiveness of the brakes.

The brake disks will inevitably begin to corrode if the vehicle is parked for an extended period, resulting in a tendency for the brakes to "judder".

  • To prevent corrosion on the brake disks, the brakes should be "braked dry" before parking the vehicle (this does not apply to vehicles with Porsche Ceramic Composite Brakes).
  • If braking comfort is noticeably impaired, we recommend having the brake system checked by experts at an authorized Porsche dealer.
    Visit an authorized Porsche dealer. Porsche recommends an authorized Porsche dealer, as they have trained technicians and the necessary parts and tools.
  • To relieve the brake system on steep slopes, remember to shift to a lower gear in good time (engine braking effect).
    If the engine braking effect on slopes is not sufficient, use the footbrake at intervals. Continuous braking can cause the brakes to overheat, impairing their effectiveness.

For Information on brake fluid and checking the brake fluid level:

  • Please see chapter "Brake Fluid" on page 66.

With correctly adjusted brakes and a correctly working brake system, the pedal travel to the point of brake application (start of brake pressure build-up) should not be longer than 10 mm.

  • Whenever the brake pedal travel exceeds this value, have the brake system checked.
    Visit an authorized Porsche dealer. Porsche recommends an authorized Porsche dealer, as they have trained technicians and the necessary parts and tools.

Brake pads and brake disks
The wear on the brake pads and brake disks largely depends on the driving style and the conditions of use and cannot therefore be expressed in terms of mileage covered.

The high performance brake system is designed to ensure the best possible braking effect at all speeds and temperatures.

Braking noise may occur, depending on the speed, braking force and ambient conditions (e.g., temperature, humidity).

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

Responding to warning symbols
The functionality of the brake system warning light can be checked by switching the ignition to the “On” position (position 1) and verifying that the warning light illuminates.

Brake wear warning light USA

Brake wear warning light Canada

A warning message is displayed to indicate that the brake pads are reaching their wear limit.

  1. Please see chapter "Warning and Information Messages" on page 284.
  • Have the brake pads replaced immediately. Visit an authorized Porsche dealer. Porsche recommends an authorized Porsche dealer, as they have trained technicians and the necessary parts and tools.

Porsche Ceramic Composite Brake (PCCB)
The high performance brake system is designed to ensure the best possible braking effect at all speeds and temperatures.

Braking noise may be heard, depending on the speed, braking force and ambient conditions (e.g., temperature, humidity).

The wear of various components of the braking system, such as brake pads and brake disks, largely depends on the individual driving style and the conditions of use and thus cannot be expressed in terms of mileage covered.

The values quoted by Porsche are based on normal use in line with general traffic conditions.

Wear increases significantly if the vehicle is used on racetracks or if a forceful driving style is adopted.

  • Before using the vehicle in this way, please check the latest guidelines with your authorized Porsche dealer.
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