
Illustration 1 - Approaching from behind
Indicator
on 
Indicator
off 
Indicator
flashing 
Another vehicle approaching from behind
Illustration 1: The side BSW/RCTA indicator light illuminates if a vehicle enters the detection zone from behind in an adjacent lane.

Illustration 2 - Approaching from behind
Illustration 2: If the driver activates the turn signal when another vehicle is in the detection zone, then the system chimes (twice) and the side indicator light flashes.
NOTE:
The radar sensors may not detect vehicles which are approaching rapidly from behind.
If the driver activates the turn signal before a vehicle enters the detection zone, the side indicator light will flash but no chime will sound when the other vehicle is detected.

Illustration 3 - Overtaking another vehicle
Overtaking another vehicle
Illustration 3: The side indicator light illuminates if you overtake a vehicle and that vehicle stays in the detection zone for approximately 2 seconds.

Illustration 4 - Overtaking another vehicle
Illustration 4: If the driver activates the turn signal while another vehicle is in the detection zone, then the system chimes (twice) and the side indicator light flashes.
NOTE:

Illustration 5 - Entering from the side
Entering from the side
Illustration 5: The side indicator light illuminates if a vehicle enters the detection zone from either side.

Illustration 6 - Entering from the side
Illustration 6: If the driver activates the turn signal while another vehicle is in the detection zone, then the system chimes (twice) and the side indicator light flashes.
NOTE:
BSW system limitations
System temporarily unavailableDriver air bag module
Exploded View
Driver air bag module
Side lid
Driver air bag module harness connectors
Steering wheel switch assembly connector
Driver air bag module bolt
Removal and Installation
CAUTION:
Before servicing, turn ignition switch OFF, disconnect both
battery terminals and wai ...
B2578, B2579 in-vehicle sensor
Description
In-vehicle Sensor
The in-vehicle sensor (1) is located on instrument lower cover
(LH).
It converts variations in compartment air temperature drawn from
the aspirator into a resistance value. It is then input into the A/C
auto amp.
In-vehicle Sensor Circuit
Aspira ...
Auto light system
Wiring Diagram
...