Toyota Tundra Service Manual: System Description

SYSTEM DESCRIPTION

1. GENERAL

(a) The blind spot monitor system has the blind spot monitor function and RCTA function.

(1) Blind spot monitor function

• The blind spot monitor function is a function that assists the driver in making the decision to change lanes. The function uses quasi-millimeter wave radar to detect vehicles that are traveling in an adjacent lane in the area that is not reflected in the outer rear view mirror assembly. The function advises the driver of the existence of a vehicle by illuminating the outer rear view mirror indicator on the outer rear view mirror assembly.
• If the turn signal switch is operated while the outer rear view mirror indicator on an outer rear view mirror assembly is illuminated, the indicator starts blinking to give additional warning to the driver.

(2) RCTA function

• The RCTA function is a function that informs the driver of an approaching vehicle from diagonally behind. The function uses quasi-millimeter wave radar to detect the positions of and relative speed to a vehicle. When the function determines that a vehicle is approaching this vehicle, this function informs the driver of it using the indicators and buzzer.

2. FUNCTION OF COMPONENTS

3. OPERATION DESCRIPTION

(a) Operation description of the blind spot monitor function

(1) Operation conditions

• The blind spot monitor system is on.
• Vehicle speed is more than approximately 16 km/h (10 mph).

(2) Conditions in which a sensor can detect a vehicle

The blind spot monitor function indicates detection of a vehicle in the detection area when either condition is met:

• When a vehicle is detected in an adjacent lane overtaking this vehicle.
• When a vehicle is detected entering the detection area because it changed lanes.

HINT:

The greater the difference in speed between the vehicle and the detected vehicle is, the farther away the other vehicle will be when the notification is given.

(3) Detection area

Vehicles in the following areas can be detected:

*a	Within approximately 3.5 m (11.48 ft.) from Side of Vehicle
*b	Within approximately 0.5 m (1.64 ft.) from Side of Vehicle
*c	Within approximately 1 m (3.28 ft.) Forward of Rear Bumper
*d	Within approximately 3 m (9.84 ft.) Behind Rear Bumper
*e	Within approximately 3 m (9.84 ft.) to 60 m (196.86 ft.) from Rear Bumper
	Detection Area (for Vehicle in Blind Spot)
	Detection Area (for Rapidly Approaching Vehicle from Behind)

(b) Operation description of the RCTA function.

(1) Operation conditions:

• The RCTA function is on.
• The shift lever is in R.
• The vehicle speed is less than approximately 8 km/h (5 mph).

(2) Conditions in which a sensor can detect a vehicle

The RCTA function indicates detection of a vehicle in the detection area when both conditions are met:

• A vehicle is approaching this vehicle from diagonally behind.
• The vehicle speed is approximately 8 km/h (5 mph) to 28 km/h (18 mph).

(3) Detection area

Vehicles in the following areas can be detected:

*a	Within approximately 5.5 to 20 m (18.05 to 65.62 ft.) from Side of Vehicle (detection area changes according to vehicle speed)
*b	Within approximately 6 m (19.69 ft.) Behind Rear Bumper
	Detection Area

4. OPERATION OF OUTER REAR VIEW MIRROR INDICATOR AND RCTA BUZZER (BLIND SPOT MONITOR BUZZER)

(a) Initial check

(1) When the blind spot monitor system is turned on with the ignition switch ON, the outer rear view mirror indicators on the outer rear view mirror assembly illuminate for 3 seconds.

(2) When the RCTA function is turned on with the ignition switch ON, the outer rear view mirror indicators on the outer rear view mirror assembly illuminate for 3 seconds and the RCTA buzzer (blind spot monitor buzzer) sounds for 1 second.

(3) When the ignition switch is turned from off to ON with the blind spot monitor system on, the outer rear view mirror indicators on the outer rear view mirror assembly illuminate for 3 seconds.

(b) Operation for each function

(1) Operation for blind spot monitor function

• When a sensor detects a vehicle in the blind spot area, the outer rear view mirror indicator on the outer rear view mirror assembly illuminates.
• While the sensor is detecting a vehicle in the detection area and the indicator is illuminated, if the turn signal switch is operated, the outer rear view mirror indicator on the outer rear view mirror assembly starts blinking as shown in the illustration.

(2) Operation for RCTA function

• When all of the operation conditions for the RCTA function are met, the outer rear view mirror indicators on the outer rear view mirror assembly blink for 2.5 seconds and the RCTA buzzer (blind spot monitor buzzer) sounds for 2.3 seconds as shown in the illustration.