Kia Sedona: Description and Operation

Third generation YP (2014-2024) / Kia Sedona YP Service Manual / Body Electrical System / Blind Spot Detection System / Description and Operation

Description

BSD system uses two magnetic wave radar sensors attached on the rear panel to measure the distance from the following vehicles and provide sensing and (visual and auditory) alarms for any vehicle that enters the blind spot.

–	Blind Spot Detection (BSD) : Senses other vehicles in the BSD zone and displays the BSD warning lamp on the side mirror to inform the driver. Warning lamp blinks ON when driver turns on the turn signal lamp to enter the lane where another vehicle is.

–	Lane Change Assist (LCA) : Senses other high-speed vehicles entering the LCA zone and displays the BSD warning lamp on the side mirror to inform the driver. Warning lamp blinks ON when driver turns on the turn signal lamp without recognizing any sudden approaching vehicle from the same direction.

–	Rear Cross Traffic Alert (RCTA) : On detecting an approaching vehicle from the rear while reversing, it generates alarm to inform the driver.

System Operating Mode

1.	When starting the engine with the switch OFF, OFF mode is ON. ※ The systems can be separately controlled based on each activation conditions. For example, BSD & LCA system is ON by BSD switch button and RCTA system is ON by RCTA USM switch.

2.	When pressing ON switch in OFF mode, Passive mode is ON.

If starting the engine with the switch OFF, Passive mode is ON.

※ When IGN is ON, the switch is in the initial state: The last position is kept.

–	If IGN OFF -> ON with the switch ON, the switch is ON.

–	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 & LCA with BSD switch off, the warning lamp of the door mirror turned on for 3 seconds.

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 or curvature radius) are not met while driving, Passive mode is ON(warning suppressed).

7.	Depending on the detected errors, BSD & LCA system (including RCTA system) becomes Fail mode.

8.	If the detected error is removed, BSD & LCA system (including RCTA system) changes to the last mode before Fail mode.

9.	If pressing OFF switch while the system is running, the system becomes OFF mode. ※ Since the systems controlled separately, only BSD & LCA system becomes OFF mode when pressing BSD switch OFF. And only RCTA system becomes OFF mode when choosing RCTA USM OFF.

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 E and Hysteresis In.

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.

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.

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 conditions, 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: 30km/h or faster Curvature radius: 100m or more Relative car speed: All except -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: 70m or less Relative car speed: All except -10 ~ 250㎞/h ("-" means overtaking the preceding vehicle)

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.

Rear Cross Traffic Alert (RCTA)

Item	Control Value	Notes
Operating vehicle Speed	0 - - 10 km/h	Operating in reverse gear
Relative Speed	4 - 36 km/h	+ : closing
Operating Distance	0.5 - 20 m	Vehicles: 20 m Motorcycles: 15 m Shopping Carts: 10 m

This function helps the driver to detect an approaching vehicle from the rear that cannot be visually identified when the driver reverses to pull the vehicle out from a parking spot.

A warning is generated for the target vehicle if it is within two seconds based on TTC (Time to Collision). Pedestrians are not considered as approaching targets when warning the driver. (Warning may not be generated.)

Time to Collision (TTC) : This represents the expected elapsed time the target will impact the driver''s vehicle calculated by considering the relative distance and speed of the approaching vehicle. If it is less than 2.0 seconds, a warning is generated.

Warning zone

Components and Components Location

Components 1. BSD unit2. BSD switch3. BSD warning lamp (Built in the outside mirror)4. Cluster ...

Repair procedures

Diagnosis With GDS 1. BSD system defects can be quickly diagnosed by the GDS. GDS quickly operates actuator to monitor input/output values and to self-diagnose. 2. Connect the cable of GDS ...

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Kia Sedona: Description and Operation

Components and Components Location

Repair procedures

Other Information:

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