Available as an option on all Cayenne models, the Porsche Ceramic Composite Brake (PCCB) has already proven its ability to cope with the harshest requirements of the racetrack. It is available in conjunction with 20-inch wheels or larger for the Cayenne Turbo and with 19-inch wheels or larger for all other Cayenne models.

The discs are made from a specially treated carbon-fiber compound that is silicated in a high-vacuum process at approximately 1,700 °C. The resulting material is not only much harder than cast iron, it is also more resistant to heat.

Even at high temperatures, the thermal resistance of the PCCB disc ensures outstanding dimensional stability. The ceramic material is totally resistant to corrosion and offers excellent acoustic

damping properties.

PCCB enables shorter braking distances – no matter how tough the driving conditions. The pedal response is fast and precise with only moderate input required. Excellent fade resistance ensures greater balance when slowing from high speed.

The key advantage of PCCB is a total weight saving of approximately 50 percent compared with equivalent cast-iron discs. As well as enhancing performance and fuel economy, the unsprung and rotating masses are lightened. The results: greater comfort and road-holding on uneven road surfaces plus better handling and agility.

Optional for all Cayenne models.

Porsche Stability Management (PSM) is an electronic control system that uses a range of functions – including anti-lock braking (ABS) – to help stabilise the vehicle (and trailer, if fitted) in hazardous road scenarios. Throughout each journey, sensors monitor the direction, speed, yaw velocity and lateral acceleration of the car. Using this information, it is possible to calculate the actual direction of travel at any given moment. If the car begins to oversteer or understeer, PSM applies selective braking on individual wheels to restore stability. If necessary, PSM can also intervene in the engine management system to temporarily modify the amount of drive transmitted to the wheels.

PSM has three additional functions that help reduce braking distances. If the throttle pedal is released suddenly, PSM automatically readies the braking system. The pressure in the brake lines

is marginally increased, bringing each of the pads into light contact with the corresponding disc. If the driver goes on to apply the brakes, the calipers respond more quickly and the braking distance is reduced.

In an emergency stop – i. e. when the pressure on the brake pedal exceeds a certain threshold – the brake assist function uses the PSM hydraulics to apply maximum braking force at all four wheels.

For added safety, the system also readies the brakes whenever a decreasing distance to the vehicle in front is detected. The optional adaptive cruise control and PSM interact to prefill the brakes.

Even if adaptive cruise control is inactive, the system registers the speed of the vehicle in front and automatically readies the braking system. In addition, the system alerts the driver to the decreasing distance by briefly tugging on the brakes.

PSM also features a trailer stabilisation function – for a significant contribution to car and trailer safety. Within the laws of physics, it compensates for load transfer caused by throttle and brake inputs up to the maximum degree of lateral acceleration. It also enhances the car’s driving dynamics and directional stability when accelerating on inconsistent road surfaces.

Other features include a special control strategy in the ABS for braking on loose surfaces. By briefly locking the wheels, a wedge is formed ahead of each tyre which provides additional

purchase to help slow the car, e.g. on gravel or snow.

For a more involving driving experience, PSM can also be disabled, but remains active in the background.

Standard on all Cayenne models.

Porsche brakes are renowned worldwide as the benchmark in performance and durability. Equipped with larger and more powerful braking systems, the Cayenne models continue this tradition by offering excellent deceleration – even when the car is fully laden with five adult occupants, a full complement of luggage and a braked trailer load of up to 7716 lbs (Cayenne with manual gearbox: 5952 lbs).

All Cayenne models have internally vented discs all round, ensuring consistent performance during heavy use. The The front disc dimensions (diameter/thickness) are 14.17/1.42 inches on the Cayenne and Cayenne Diesel, Cayenne S, Cayenne S Hybrid, Cayenne GTS, and 15.35/1.50 inches on the Cayenne Turbo. All models have six-piston monobloc aluminum brake calipers at the front and four-piston equivalents at the rear.

The calipers are black on the Cayenne and Cayenne Diesel and silver on the Cayenne S and Cayenne S Hybrid. On the new Cayenne GTS and the Cayenne Turbo, they feature a striking red paint finish.

Braking is assisted by a tandem booster and large brake master cylinder. Further assistance is provided by PSM.

For greater safety, the brake pads are equipped with wear sensors, alerting the driver when new pads are required.

Manually activated and deactivated, the electric parking brake releases automatically as you drive off.

With the automatic hold function, you can pull away on the flat or a slope without ever rolling back. The system automatically detects when the vehicle has come to a halt on an uphill gradient. PSM then maintains the brake pressure at all four wheels for a brief period to prevent the vehicle from moving in the opposite direction.

The electronic engine management system on the Cayenne S Hybrid controls the braking process so that, when the brake pedal is actuated, as much expended energy as possible can be harnessed by the electric machine in generator mode and stored in the 288-volt nickel metal hydride (NiMH) battery. This is referred to as recuperation. To do this, the engine management system adjusts the generator current depending on the brake pedal position, recovers part of the kinetic energy and stores it in the battery. When the pressure on the brake pedal exceeds a certain threshold, the brakes are applied.

The Cayenne models are all equipped as standard with an engine immobiliser and anti-theft alarm featuring ultrasonic interior surveillance.

The alarm circuit includes all four doors, bonnet, tailgate, rear screen, interior, ignition and trailer (if fitted).

The immobiliser system works by automatically communicating with the vehicle key. If the key is approved, the engine can be started as normal.

When the key is removed from the ignition, the steering column is automatically locked to provide additional security.

This preparation enables future installation of the Porsche Vehicle Tracking System (PVTS) obtainable from Porsche Tequipment. PVTS can be used to locate a stolen vehicle in 25 EU countries as well as Norway, Switzerland and Russia – irrespective of where you live.

The vehicle is not tracked continually, only when the alarm is triggered. In the event of vehicle theft or manipulation, or if the loss of the vehicle is reported by the owner, a silent alarm is automatically triggered. The package includes a special wiring loom, higher capacity battery (depending on vehicle specification) and tilt sensor for the alarm system.

Optional for all Cayenne models.

All Cayenne models are equipped with full-size front airbags for driver and front passenger as standard. These are augmented by Porsche Side Impact Protection (POSIP).

This comprizes a side airbag in each front seat, curtain-type airbags on each side of the roof offering optimum head protection for both rows of seats and side impact protection elements in each door. Side airbags at the rear are also available as an option.

Two impact sensors are located at the front of the car to enable better detection of a head-on collision. The driver and front passenger airbags use a gas generant based on an organic

propellant. As a result, the airbags are lighter, more compact and easier to recycle. A roll-over detection system provides additional protection in the event that the car were to overturn. Using sensor-acquired data, it enables early deployment of the curtain airbags and triggers the seat-belt pre-tensioners.

The Cayenne models feature three-point seat belts on all five seats, as well as seat-belt pre-tensioners (front and outer rear seats) and force limiters (front seats only).

The outer rear seats are equipped with LATCH mounting points for compatible child seats as standard.

Our ongoing development of the lightweight steel body is a decisive factor in the enhanced passive safety and unparalleled rigidity of the Cayenne body.

In the event of an accident, a system of side and cross-members at the front of the car helps to

channel impact energy in a safe and predetermined manner. The interior is protected by hot-formed super high-strength steel reinforcements, including side intrusion beams in each of the doors.

High strength and consistent deformation properties: two key safety requirements fulfilled by the multiphase steel used throughout the body. Thanks to a safety cage structure made from high-tech steels, the highly resilient passenger cell offers high levels of protection.