2009 BMW 5 Series Owner's Manual - Page 92
2009 BMW 5 Series Manual
Page 92 highlights
Technology for comfort, convenience and safety Technology for comfort, convenience and safety PDC Park Distance Control* The concept The PDC assists you when you are parking. Acoustic signals and an optical display* alert you to the approach of an object from behind your vehicle. To measure the distance, there are four ultrasonic sensors in each bumper. The range of these sensors is approx. 7 ft/2 m. However, an acoustic warning first sounds for the sensors at the front and at the two rear corners at approx. 24 in/60 cm, and for the center rear sensors at approx. 5 ft/1.50 m. PDC is a parking aid that can indicate objects when they are approached slowly, as is usually the case when parking. Avoid approaching an object at high speed, otherwise the physical circumstances would mean that the system warning was too late.< Automatic deactivation After driving approx. 165 ft/50 m or at over approx. 20 mph/30 km/h, the system is switched off and the LED goes out. You can reactivate the system manually as needed. Signal tones When nearing an object, the position is correspondingly indicated by an interval tone. Thus, an object detected to the left rear of the vehicle will be indicated by a signal tone from the left rear speaker, etc. As the distance between vehicle and object decreases, the intervals between the tones become shorter. If the distance to the nearest object falls to below roughly 1 ft/30 cm, then a continuous tone sounds. An intermittent tone is interrupted after approx. 3 seconds: > if you remain in front of an object that was only detected by one of the corner sensors > if you drive parallel to a wall Automatic activation The system starts to operate approx. one second after you shift into reverse or move the selector lever into position R with the engine running or the ignition switched on. Wait this short time before driving off. Malfunction The LED in the button flashes and a message appears on the Control Display. PDC is malfunctioning. Have the system checked. To prevent this problem, keep the sensors clean and free of ice or snow in order to ensure that they will continue to operate effectively. Do not spray the sensors with high-pressure cleaning jets for long periods and maintain a distance of at least 4 in/10 cm to them. Manual activation PDC with visual warning* You can also have the system show distances to objects on the Control Display. Objects that are farther away are already shown there before a signal tone sounds. The setting is stored for the remote control currently in use. iDrive, for operating principle refer to page 16. Press the button; the LED lights up. Manual deactivation Press the button again; the LED goes out. 90 Online Edition for Part no. 01 41 2 600 721 - © 08/08 BMW AG