Audi A4 Owner's Manual page 153

document_0900452a81b1b9de.book Seite 151 Donnerstag, 26. Juli 2007 9:16 09
Applies to vehicles: with side assist
Area covered by the radar sensors
The area covered by the radar sensors ⇒ fig. 166 consists of:
The rearward approach zone (light green area: up to about 50
A
metres) and
1
A
Blind spots (dark green area)
2
The radar sensors monitor the lanes immediately to the left and
right of your vehicle. Other lanes are not covered by the sensors.
Note
The side assist system is programmed for lanes of a fixed width, and
is not able to measure differing lane widths. It monitors a zone
equivalent to one normal lane width on either side. If the lanes are
narrower than this, or if vehicles are not travelling in the centre of
the lanes, the system may register vehicles that are not in fact trav-
elling in an adjacent lane ⇒ page 156.
Applies to vehicles: with side assist
How the system works
When other vehicles are detected, the side assist system registers
their distance and how fast they are approaching. The warning lamp
Controls
on the relevant exterior mirror will light up whenever the side assist
calculates that the distance and the speed differential of
approaching vehicles would be critical in the event of a lane change.
The warning lamp may light up when you are being overtaken and
when you are overtaking another vehicle.
If you are overtaking slowly, with a speed differential of less than
15 km/h, the warning lamp will light up as soon as the other vehicle
enters your blind spot and is detected by the sensors. If you are
overtaking with a speed differential which is greater than this the
lamp will not give a warning.
Fig. 166 Schematic
diagram: Area covered
by the radar sensors
Applies to vehicles: with side assist
Information mode and warning mode
The side assist has two modes of operation
.
The side assist will respond in the appropriate mode, depending on
whether or not you operate the turn signal to indicate an intended
lane change.
Information mode
As long as you do not operate the turn signal, the side assist will
merely inform you of the presence of vehicles that it has detected
and judges to be critical in the event of a lane change. The warning
lamp on the relevant exterior mirror will light up with low intensity
whenever the side assist calculates that the distance and the speed
differential of an approaching vehicle are critical.
The intensity of the warning lamp in this information mode is delib-
erately kept relatively low, so that it does not distract you while you
are looking at the road in front and do not intend to change to a
different lane. The information mode is clearly visible when you look
in the exterior mirror.
Safety Driving tips General maintenance
The information mode and
The warning mode
Self-help
Audi side assist 151
Technical data