Driving -> BSM (Blind Spot Monitor) for Your Toyota 4 Runner SUV Fifth Generation (2010-2024)

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BSM (Blind Spot Monitor)  
The Blind Spot Monitor is a system that uses rear side radar sen-  
sors installed on the inner side of the rear bumper on the left and  
right side to assist the driver in confirming safety when chang-  
ing lanes.  
System components  
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2
Multi-information display  
Turning the Blind Spot Monitor on/  
off.  
Outside rear view mirror indica-  
tors  
When a vehicle is detected in a  
blind spot of the outside rear view  
mirrors or approaching rapidly from  
behind into a blind spot, the out-  
side rear view mirror indicator on  
the detected side will illuminate. If  
the turn signal lever is operated  
toward the detected side, the out-  
side rear view mirror indicator will  
flash.  
Turning the Blind Spot Monitor on/off  
The Blind Spot Monitor can be enabled/disabled on  
screen of the  
multi-information display. (P. 95)  
When the Blind Spot Monitor is disabled, the BSM OFF indicator (P. 85)  
will come on. Each time the engine switch is turned to the off then changed  
to the IGNITION ON mode, the Blind Spot Monitor will be enabled auto-  
matically.  
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Outside rear view mirror indicator visibility  
In strong sunlight, the outside rear view mirror indicator may be difficult to  
see.  
When “BSM Unavailable See Owner’s Manual” is shown on the multi-  
information display  
The sensor voltage has become abnormal, or water, snow, mud, etc., may be  
attached to the rear bumper around the sensors (P. 272). Removing the  
water, snow, mud, etc., from the vicinity of the sensor area should return it to  
normal. Also, the sensor may not function normally when used in extremely  
hot or cold weather.  
When “Blind Spot Monitor Malfunction Visit Your Dealer” is shown on  
the multi-information display  
There may be a sensor malfunction or misaligned. Have the vehicle  
inspected by your Toyota dealer.  
Customization  
Some functions can be customized. (P. 558)  
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WARNING  
To ensure the system can operate properly  
Blind Spot Monitor sensors are installed behind the left and right sides of the  
rear bumper respectively. Observe the following to ensure the Blind Spot  
Monitor can function correctly.  
Keep the sensors and the surrounding  
areas on the rear bumper clean at all  
times.  
If a sensor or its surrounding area on  
the rear bumper is dirty or covered with  
snow, the Blind Spot Monitor may not  
operate and a warning message (P.  
271) will be displayed. In this situation,  
clear off the dirt or snow and drive the  
vehicle with the operation conditions of  
the Blind Spot Monitor (P. 275) satis-  
fied for approximately 10 minutes. If the  
warning message does not disappear,  
have the vehicle inspected by your Toy-  
ota dealer.  
Do not subject a sensor or its surrounding area on the rear bumper to a  
strong impact.  
If a sensor is moved even slightly off position, the system may malfunction  
and vehicles may not be detected correctly. In the following situations,  
have your vehicle inspected by your Toyota dealer.  
• A sensor or its surrounding area is subject to a strong impact.  
• If the surrounding area of a sensor is scratched or dented, or part of  
them has become disconnected.  
Do not disassemble the sensor.  
Do not attach stickers or install accessories to the sensor or surrounding  
area on the rear bumper.  
If a sensor or the rear bumper needs to be removed/installed or replaced,  
contact any authorized Toyota retailer or Toyota authorized repairer, or any  
reliable repairer.  
Do not modify the sensor or surrounding area on the rear bumper.  
Do not paint the rear bumper any color other than an official Toyota color.  
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Blind Spot Monitor operation  
Vehicles that can be detected by the Blind Spot Monitor  
The Blind Spot Monitor uses radar sensors to detect the following  
vehicles traveling in adjacent lanes and advises the driver of the  
presence of such vehicles via the indicators on the outside rear  
view mirrors.  
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2
Vehicles that are traveling in areas that are not visible using the  
outside rear view mirrors (the blind spots)  
Vehicles that are approaching rapidly from behind in areas that  
are not visible using the outside rear view mirrors (the blind  
spots)  
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Blind Spot Monitor detection areas  
The areas that vehicles can be detected in are outlined below.  
The range of each detection area is:  
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Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either side of  
the vehicle*  
*: The area between the side of the vehicle and 1.6 ft. (0.5 m) from the  
side of the vehicle cannot be detected.  
2
Approximately 3.3 ft. (1 m) forward of the rear bumper  
Approximately 9.8 ft. (3 m) from the rear bumper  
3
4
Approximately 9.8 ft. (3 m) to 197 ft. (60 m) from the rear  
bumper*  
*: The greater the difference in speed between your vehicle and the  
detected vehicle is, the farther away the vehicle will be detected, caus-  
ing the outside rear view mirror indicator to illuminate or flash.  
WARNING  
Cautions regarding the use of the system  
The driver is solely responsible for safe driving. Always drive safely, taking  
care to observe your surroundings.  
The Blind Spot Monitor is a supplementary function which alerts the driver  
that a vehicle is in a blind spot of the outside rear view mirrors or is  
approaching rapidly from behind into a blind spot. Do not overly rely on the  
Blind Spot Monitor.  
As the function cannot judge if it is safe to change lanes, over reliance could  
lead to an accident resulting in death or serious injury. As the system may  
not function correctly under certain conditions, the driver’s own visual confir-  
mation of safety is necessary.  
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The Blind Spot Monitor is operational when  
The Blind Spot Monitor is operational when all of the following conditions are  
met:  
The engine switch is in the IGNITION ON mode.  
The Blind Spot Monitor is on.  
The shift lever is in a position other than R.  
The vehicle speed is greater than approximately 10 mph (16 km/h).  
The Blind Spot Monitor will detect a vehicle when  
The Blind Spot Monitor will detect a vehicle present in the detection area in  
the following situations:  
A vehicle in an adjacent lane overtakes your vehicle.  
You overtake a vehicle in adjacent lane slowly.  
Another vehicle enters the detection area when it changes lanes.  
Conditions under which the system will not detect a vehicle  
The Blind Spot Monitor is not designed to detect the following types of vehi-  
cles and/or objects:  
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Small motorcycles, bicycles, pedestrians, etc.*  
Vehicles traveling in the opposite direction  
Guardrails, walls, signs, parked vehicles and similar stationary objects*  
Following vehicles that are in the same lane*  
Vehicles traveling 2 lanes away from your vehicle*  
Vehicles which are being overtaken rapidly by your vehicle.*  
*: Depending on the conditions, detection of a vehicle and/or object may  
occur.  
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Conditions under which the system may not function correctly  
The Blind Spot Monitor may not detect vehicles correctly in the following sit-  
uations:  
• When the sensor is misaligned due to a strong impact to the sensor or its  
surrounding area  
• When mud, snow, ice, a sticker, etc. is covering the sensor or surround-  
ing area on the rear bumper  
• When driving on a road surface that is wet with standing water during bad  
weather, such as heavy rain, snow, or fog  
• When multiple vehicles are approaching with only a small gap between  
each vehicle  
• When the distance between your vehicle and a following vehicle is short  
• When there is a significant difference in speed between your vehicle and  
the vehicle that enters the detection area  
• When the difference in speed between your vehicle and another vehicle  
is changing  
• When a vehicle enters a detection area traveling at about the same  
speed as your vehicle  
• As your vehicle starts from a stop, a vehicle remains in the detection area  
• When driving up and down consecutive steep inclines, such as hills, dips  
in the road, etc.  
• When driving on roads with sharp bends, consecutive curves, or uneven  
surfaces  
• When vehicle lanes are wide, or when driving on the edge of a lane, and  
the vehicle in an adjacent lane is far away from your vehicle  
• When an accessory (such as a bicycle carrier) or towing eyelet is  
installed to the rear of the vehicle  
• When there is a significant difference in height between your vehicle and  
the vehicle that enters the detection area  
• Immediately after the Blind Spot Monitor is turned on  
Instances of the Blind Spot Monitor unnecessarily detecting a vehicle and/or  
object may increase in the following situations:  
• When the sensor is misaligned due to a strong impact to the sensor or its  
surrounding area  
• When the distance between your vehicle and a guardrail, wall, etc. that  
enters the detection area is short  
• When driving up and down consecutive steep inclines, such as hills, dips  
in the road, etc.  
• When vehicle lanes are narrow, or when driving on the edge of a lane,  
and a vehicle traveling in a lane other than the adjacent lanes enters the  
detection area  
• When driving on roads with sharp bends, consecutive curves, or uneven  
surfaces  
• When the tires are slipping or spinning  
• When the distance between your vehicle and a following vehicle is short  
• When an accessory (such as a bicycle carrier) or towing eyelet is  
installed to the rear of the vehicle  
• When the vehicle throws up water or snow behind.  
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