The Blind Spot Monitor is a system that has 2 functions:
These functions use same sensors.

Rear Cross Traffic Alert function: When a vehicle approaching from the right or left rear of the vehicle is detected, the outside rear view mirror indicators flash.
The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be difficult to see.
Rear Cross Traffic Alert buzzer hearing
Rear Cross Traffic Alert function may be difficult to hear over loud noises such as high audio volume.
When there is a malfunction in the Blind Spot Monitor system
If a system malfunction is detected due to any of the following reasons, warning message will be displayed:
Certification for the Blind Spot Monitor system
FCC ID: OAYSRR2A
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference
that may cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Applicable law: Canada 310 This device complies with Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Frequency bands: 24.05-24.25 GHz Output power: less than 20 milliwatts
| WARNING Handling the radar sensor One Blind Spot Monitor sensor is installed inside the left and right side of the vehicle rear bumper respectively. Observe the following to ensure the Blind Spot Monitor can function correctly.
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The Blind Spot Monitor functionKnock Sensor Circuit Low Input/ Knock Sensor Circuit High Input
DTC P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or
Single Sensor)
DTC P0328 Knock Sensor 1 Circuit High Input (Bank 1 or
Single Sensor)
DTC P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
DTC P0333 Knock Sensor 2 Circuit High Input (Bank 2)
DESCRIPTION
A flat type knock sensor (non-resona ...
Short to GND in Rear Curtain Shield Squib RH
Circuit
DTC B1632/81 Short to GND in Rear Curtain Shield Squib RH
Circuit
DESCRIPTION
The rear curtain shield squib RH circuit consists of the center airbag sensor
assembly and the curtain
shield airbag assembly RH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC ...
If you think something is
wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
Flat-looking tires or uneven tire w ...