2009 Audi Q7 Owner's Manual 

The red line in the MMI Display fig. 217 indicates the distance you should maintain from an obstacle when parking. If an obstacle is located at road level, you can approach the obstacle until the red line touches the obstacle (1.3 ft, or 40 cm, distance). On the other hand, if an obstacle is not located at road level (the bumper of a vehicle, for example), you should not approach this obstacle until the red line touches the obstacle. For instance, if you back up toward another vehicle, it will appear as though the guide helplines and surface s are being pushed over the vehicle behind you fig. 217.

In this example, it can be recognized in the MMI Display that the red line exactly touches the bumper of the vehicle behind you. Indeed, however, the red line fig. 218 does not touch the bumper, but has rather been pushed underneath the bumper. Your vehicle bumper must also be taken into consideration for the distance.

For vehicles with a factory installed towing hitch, or a trailer hitch installed according to factory specifications, the rear acoustic parking sensors are not activated when the vehicle is put in reverse gear while an electrical connection to the trailer socket is established. No distance alert occurs in the rear (page 191). The rearview camera picture (page 194) is displayed without orientation lines and without blue surfaces.

Audi Q7 Models