Situation with vehicle approaching slowly from behindSituation with vehicle approaching slowly from behind  - Lane change assist feature - Audi side assist - Controls - Audi A4 Owner's Manual - Audi A4

side assist: Vehicles approaching slowly from behind and vehicles

side assist: Vehicles approaching slowly from behind and vehicles in the blind spot

1 Warning lamp on exterior mirror does not light up

The sensors have detected a slowly approaching vehicle - in this example in the left-hand lane. Because it is relatively far away and only approaching slowly, no warning will appear on the exterior mirror ⇒in Safety notes on page 157. in Safety notes on page 157.

2 Warning lamp lights up in information mode

The slowly approaching vehicle is now closer. The warning lamp on the exterior mirror lights up in the information mode.

The warning lamp on the exterior mirror will only light up if the side assist calculates that the distance and the speed differential of approaching vehicles would be critical in the event of a lane change. In all cases, the side assist will light up to indicate the vehicles it has detected at the latest when they enter the blind spot.

3 Warning lamp flashes in warning mode

If you operate the turn signal in situation 2, the warning lamp on the exterior mirror will flash briefly several times. This calls your attention to the presence of a vehicle which you may have overlooked.

Note

  • The faster a vehicle approaches, the earlier the warning will appear on the exterior mirror. The side assist will give a warning for the approaching vehicles it has detected at the latest when they enter the blind spot.
  • If a vehicle is approaching at high speed it is possible that a lane change may be critical, even though no warning is given.