7.19.4.1. Another vehicle approaching from behind

Illustration 1: The BSW LED indicator light illuminates if a vehicle enters the detection zone from behind in an adjacent lane. However, if the overtaking vehicle is travelling much faster than your vehicle, the BSW LED indicator light may not illuminate before the detected vehicle is beside your vehicle. Always use the side and rear mirrors and turn and look in the direction your vehicle will move to ensure it is safe to change lanes.

Illustration 2: If the driver activates the turn signal, then the system chimes (twice) and the BSW LED indicator light and the BSW indicator will flash.

If the driver activates the turn signal before a vehicle enters the detection zone, the BSW LED indicator light and the BSW indicator will flash but no chime will sound when the other vehicle is detected.