Kia Sorento: Description - Blind Spot Detection System - Body Electrical System - Kia Sorento XM 2011-2024 Service ManualKia Sorento: Description

Second Generation XM (2011-2024) / Kia Sorento XM 2011-2024 Service Manual / Body Electrical System / Blind Spot Detection System / Description

BSD is a system that uses two magnetic wave radar sensors attached on the rear bumper to measure the distance from the following vehicles and provides the sensing and (visual and auditory) alarm of any vehicle coming into the blind spot.
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Blind Spot Detection (BSD) : Senses other high-speed access vehicles in the blind spot and then displays a BSD warning lamp on the side mirror for the driver.
Warning lamp and alarm is ON when driver turns on the turn signal lamp to enter the lane where another vehicle is.
-
Lane Change Assist (LCA) : Senses other vehicles in the blind spot and then displays a BSD warning lamp on the side mirror for the driver.
Warning lamp and alarm is ON when driver turns on the turn signal lamp without recognizing any sudden approaching vehicle from that direction.
System Operating Mode

1.
When starting the engine with the switch off, OFF mode is on.
2.
When pressing ON switch in OFF mode, Passive mode is on.
3.
If starting the engine with the switch ON, Passive mode is on.
※ When IGN is ON, the switch is in the initial state : The last position is kept.
A.
If IGN OFF → ON with the switch ON, the switch is ON.
B.
If IGN OFF → ON with the switch OFF, the switch is OFF.
4.
If you start the engine with BSD switch ON, or if you turn on BSD with BSD switch OFF, the warning lamp of the door mirror flickers for 2 to 3 seconds.
This is to inform the driver that the BSD system is ready. (provided that if the system is in Fail mode, there is no flickering.)
5.
If the activation conditions (speed and curvature radius) are met while driving, Active mode is on (warning issued).
6.
If the activation conditions (speed and curvature radius) are not met while driving, Passive mode is on (warning removed).
7.
If BSD & LCA operation fails in any mode, Fail mode is on.
8.
If BSD & LCA operation operates normally in Fail mode, OFF mode is on.
9.
If pressing OFF switch while BSD & LCA function is operating (Active/Passive), OFF mode is on.
Warning Condition
1.
Warning zone

2.
Conditions for BSD warning ON
The entire body of the target vehicle is located behind the line A.
Any part of the target vehicle pass the line B.
Any part of the target vehicle passes the line D and Hysteresis In.
The entire part of the target vehicle passes the line D and Hysteresis In.

3.
Conditions for BSD warning OFF
The entire body of the target vehicle moves before the line A.
The entire body of the target vehicle moves behind the line B.
The entire body of the target vehicle passes the line D and Hysteresis Out.
The entire part of the target vehicle passes the line E and Hysteresis Out.

4.
Conditions for LCA warning ON
The entire body of the target vehicle is located behind the line B.
Any part of the target vehicle pass the line C.
Any part of the target vehicle passes the line D and Hysteresis In.
The entire part of the target vehicle passes the line E and Hysteresis In.
In the all above condition, TTC(Time to Collision) is not less than 4.5 sec.

5.
Conditions for LCA warning OFF
The entire body of the target vehicle is located before the line B.
The entire body of the target vehicle pass the line C.
The entire body of the target vehicle passes the line D and Hysteresis Out.
The entire body of the target vehicle passes the line E and Hysteresis Out.
In the all above condition, TTC(Time to Collision) is not more than 4.5 sec.

6.
Sensor activation conditions
BSD & LCA switch (indicated by the switch LED) is on.
Vehicle Speed: 30 km/h or faster
Curvature radius: 170m or more
Relative car speed: -10 ~ 250㎞/h
("-" means overtaking the preceding vehicle)
7.
Sensor deactivation conditions
BSD & LCA switch (indicated by the switch LED) is off.
Vehicle Speed: 28 km/h or slower
Curvature radius: 150m or less
Relative car speed: All except -10 ~ 250㎞/h
("-" means overtaking the preceding vehicle)
8.
System control prohibition
The radar is covered by debris: System conditions - Blockage message is outputted
  
If the sensor on the rear bumper is contaminated by snow, mud or stickers, its detecting performance may be lowered.
The radar installation is damaged by an outside shock: Send the error code
BSD & LCA system fails: Send the error code
The radar is overheated: System conditions - Over Temperature message is outputted.
Components
1. Blind Spot Detection (BSD) Unit 2. BSD switch 3. Speaker (Built in the cluster) 4. BSD warning lamp (Built in the outside mirror) ...

Diagnosis With GDS
1. BSD system defects can be quickly diagnosed with the GDS. GDS operates actuator quickly to monitor, input/output value and self diagnosis. 2. ...

See also:

Circuit Diagram
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