Audi Q3 Owners & Service Manuals

Audi Q3: Side assist


Applies to: vehicles with side assist

Driver assistance
Fig. 110 Driving situations and displays in the exterior mirror

General information

Side assist monitors the blind spot and traffic behind your vehicle and provides assistance when you are changing lanes. If the system detects an object approaching and classifies it as critical, the display 1 in the exterior mirror on that side of the vehicle will turn on.

Driving situations

The side assist warning is active at speeds above approximately 9 mph (15 km/h) and can help in situations such as the following:

  • Your vehicle is being passed. The faster another vehicle approaches from behind, the sooner the display in the exterior mirror will turn on.
  • There are vehicles traveling in the same direction as you in a lane adjacent to yours. The display in the exterior mirror will turn on when the detected object is in the "blind spot", at the latest.
  • You are slowly passing another vehicle. If the difference in speed between the two vehicles is less than 9 mph (15 km/h), the display in the exterior mirror will turn on.

Information stage

As long as you do not activate a turn signal, the system will inform you about objects classified as critical by turning on the display in the respective exterior mirror 1.

The display remains dim in the information stage so that you are not distracted while looking forward.

Warning stage

Once you activate a turn signal, the system will inform you about objects classified as critical by turning on the display in the respective exterior mirror.

If other driver assistance systems (depending on vehicle equipment) detect that your vehicle is about to leave the lane, the display will blink even if the turn signal lever is not activated to warn you about objects that are classified as critical.

You can also be warned with corrective steering.

System limitations

The system uses the data from the radar sensors at the rear corners of the vehicle. They are designed to detect the left and right adjacent lanes when the road lanes are the normal width. In some situations, the system may react to vehicles in your own lane or lanes that are not directly adjacent to yours, or to objects on the side of the road. In this case, the display will turn on even though there is no vehicle in the critical area. These situations may include:

  • Driving on the edge of your own lane
  • Narrow lanes
  • Curves
  • High barriers on the side of the road


  • Observe the safety precautions and note the limits of the assist systems, sensors, and cameras.
  • The display may not appear on time when vehicles are approaching or being passed very quickly.


  • If the window glass in the driver's door or front passenger's door has been tinted, the display in the exterior mirror may be incorrect.
  • The coverage areas of the sensors fig. 110 are diagrams and do not represent a true-to- scale image of the sensor ranges.
  • The system is not available when towing a trailer. There is no guarantee the system will switch off when using a retrofitted trailer hitch. Do not use these functions when towing a trailer.
  • The system complies with United States FCC regulations and ISED regulations.


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