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Cayenne

2017-2018 Macan – Manual

2017-2018 Macan – Manual

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Page: 45

Active safety - Porsche Active Safe (PAS)

The adaptive cruise control (ACC) sensor is used for the Porsche Active Safe (PAS) functions.

These are:

  1. Prefilling the brake system
    Prefilling of the brake system if the radar sensor detects a critical approach to a moving obstacle in order to bridge play and to improve responsiveness.

  2. BrakeAssist
    In the event of an emergency braking operation where the pedal force is insufficient, a brake booster provides the braking pressure necessary for maximum deceleration at all 4 wheels.
    It reduces the trigger threshold of the brake assist system if the sensor detects a critical approach to a moving obstacle. Depending on the degree of severity of the hazardous situation, the trigger threshold of the brake assist system is reduced in three stages.

  3. Target braking
    The brake pressure can be increased appropriately to the situation if the radar sensor simultaneously detects a critical approach to a moving obstacle and insufficient braking force. If necessary, the full force of the brakes is applied.

Information
All Porsche Active Safe (PAS) functions are active for speeds in excess of approx. 20 mph ( 30 km/h).


Latent warning (visual)

Fig. 9: Visual latent warning

If the distance when traveling behind another vehicle for a long period is too small to avoid a collision if the vehicle ahead were to brake, the latent warning (yellow icon) appears on the multifunction display to warn the driver.

  • Increase the distance from the vehicle in front as necessary.

Prewarning (visual and acoustic signal)

Fig. 10: Prewarning

If the radar sensor detects a critical approach to a moving obstacle ahead with a high potential for collision, the visual and acoustic prewarnings are given to warn that evasive action can be taken to avoid the collision.

Insufficient distance
Chance of collision with the vehicle ahead

  • Brake immediately.

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