Problematic conditions for switching on and off
WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2006 BMW Z4, 2006 BMW M3, 2006 BMW M Roadster, 2006 BMW M Coupe, and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
In borderline situations, PDC may give a warning even though there is no object within the effective range (reflection from the ground, e.g. on coarse gravel).
In borderline situations, it could happen that objects that are present are not detected (no or insufficient reflection due to geometric form).
Under the following conditions, it could happen that the PDC gives a warning, even though there is no object within the effective range:
- Ultrasonic sensor incorrectly located in its bracket
- Heavy rain
- Severe dirt contamination or icing of the ultrasonic sensors
- Ultrasonic sensors covered in snow
- Echo pulses caused by ground, e.g. extremely coarse road surface or high grass
- Very smooth walls in large, enclosed, rectangular spaces, e.g. in underground car parks (interference from earlier, reflected echo impulses)
Under the following conditions, the PDC may not recognize an obstacle that is present:
- Low objects or objects with corners and sharp edges (no reflection)
- If you drive alongside a wall while you are parking, the acoustic warning will be deactivated so long as you are moving parallel to the wall.