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Cayenne

2013-2014 Cayenne – Manual

2013-2014 Cayenne – Manual

Page: 177

A – Vehicles changing lanes/cutting in
If a vehicle is changing lanes or cutting in ahead of you in the same lane, the vehicle will only be detected when it has moved completely into your lane.

B – Vehicles with a small cross-section/ narrow vehicles
Narrow or small vehicles will not be detected or will be detected too late.

C – Driving into and out of corners
When driving into and out of corners, vehicles will not be detected or will be detected too early, or adaptive cruise control will react to vehicles in adjacent lanes.

D – Stationary vehicles
A stationary vehicle that appears suddenly in the detection field of the radar sensor, e.g. after a vehicle in front changes lanes, will not be detected by adaptive cruise control.

Failure of adaptive cruise control to detect a stationary vehicle
Stationary vehicles are not detected by the radar sensor of the adaptive cruise control.

  • Drive with extreme care.
  • Slow down if necessary.

Active Safety – Porsche "Active Safe"
The adaptive cruise control sensor is used for the Porsche "Active Safe" functions.

These include:

  1. Brake system prefilling
    Prefilling of the brake system if the radar sensor detects that the vehicle is coming critically close to a moving obstacle in order to bridge the air gaps and improve braking response.
  2. Brake Assist Plus
    Reduction of the activation threshold of the Brake Assist function if the sensor detects that the vehicle is coming critically close to a moving obstacle.
    The activation threshold of the Brake Assist function is reduced in three stages, depending on how critical the danger situation is.
  3. Targeted braking
    If the radar sensor detects that the vehicle is coming critically close to a moving obstacle and at the same time, that the brakes are not being applied hard enough, brake pressure can be increased accordingly. If necessary the vehicle can be fully braked.

Information
All Porsche "Active Safe" functions are active for speeds of more than approx. 20 mph (30 km/h).


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