Hyundai Palisade: Rear Corner Radar System / Description and operation

Hyundai Palisade (LX2) 2020-2024 Service Manual / Advanced Driver Assistance System (ADAS) / Rear Corner Radar System / Description and operation

Description

Hyundai Palisade. Description and operation

Blind-Spot Radar is a system that measures the relative speed and distance from the following vehicles by using two electromagnetic wave radar sensors attached to the rear bumper, and detects any vehicle within the blind spot zone and gives off alarm (visual and auditory).
–
Blind-Spot Collision Warning (BCW) : Senses other vehicles in the BCW zone and turns on the BCW warning lamp for the driver. Warning lamp starts blinking when the driver turns on the turn signal lamp to enter the lane where another vehicle is driving.
–
RCCW (Rear Cross-Traffic Collision Warning) : When the vehicle is on the reverse, the RCCW generates alarm to alert another vehicle approaching from the rear and side.
–
RCCA (Rear Cross-Traffic Collision-Avoidance Assist) : When the vehicle is on the reverse, the RCCA take brake to avoid another vehicle approaching from the rear and side.
–
BCA-R(Blind-Spot Collision-Avoidance Assist - Rear) : When the lane departure, BCA-R generates avoidance for another vehicle within the blind spot zone.
–
SEA (Safe Exit Assist) : When getting off the vehicle, SEA generates alarm to alert another vehicle approaching from the rear.
System Operating Mode

Hyundai Palisade. Description and operation

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.
–
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 Blind-Spot switch ON, or if you turn on Blind-Spot Radar with Blind-Spot switch OFF, the warning lamp of the door mirror flickers for 2 to 3 seconds.
This is to inform the driver that the Blind-Spot Radar 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 BCW & LCA operation fails in any mode, Fail mode is on.
8.
If BCW & LCA operation operates normally in Fail mode, OFF mode is on.
9.
If pressing OFF switch while BCW & LCA function is operating (Active/Passive), OFF mode is on.
Warning Condition
1.
Warning zone

Hyundai Palisade. Description and operation
2.
Conditions for BCW warning ON
① The entire body of the target vehicle is located behind the line A.
② Any part of the target vehicle pass the line B.
③ Any part of the target vehicle passes the line D and Hysteresis In.
④ The entire part of the target vehicle passes the line E and Hysteresis In.

Hyundai Palisade. Description and operation
3.
Conditions for BCW warning OFF
① The entire body of the target vehicle moves before the line A.
② The entire body of the target vehicle moves behind the line B.
③ The entire body of the target vehicle passes the line D and Hysteresis Out.
④ The entire part of the target vehicle passes the line E and Hysteresis Out.

Hyundai Palisade. Description and operation
4.
Conditions for LCA warning ON
① The entire body of the target vehicle is located behind the line B.
② Any part of the target vehicle pass the line C.
③ Any part of the target vehicle passes the line D and Hysteresis In.
④ The entire part of the target vehicle passes the line E and Hysteresis In.
⑤ In the all above condition, TTC(Time to Collision) is not less than 4.5 sec.

Hyundai Palisade. Description and operation
5.
Conditions for LCA warning OFF
① The entire body of the target vehicle is located before the line B.
② The entire body of the target vehicle pass the line C.
③ The entire body of the target vehicle passes the line D and Hysteresis Out.
④ The entire body of the target vehicle passes the line E and Hysteresis Out.
⑤ In the all above condition, TTC(Time to Collision) is more than 4.5 sec.

Hyundai Palisade. Description and operation
6.
Sensor activation conditions
① BCW & LCA switch (indicated by the switch LED) is on.
② Vehicle Speed: 30 km/h or faster
③ Curvature radius: 100m or more
④ Relative car speed: -15 - 255km/h
("-" means overtaking the preceding vehicle)
7.
Sensor deactivation conditions
① BCW & LCA switch (indicated by the switch LED) is off.
② Vehicle Speed: 28 km/h or slower
③ Curvature radius: 70m or less
④ Relative car speed: All except -15 - 255km/h
("-" means overtaking the preceding vehicle)
8.
System control prohibition
① The radar is covered by debris: System conditions - Blockage message is outputted
Hyundai Palisade. Description and operation   
If the sensor on the rear bumper is contaminated by snow, mud or stickers, its detecting performance may be lowered.
② The radar installation is damaged by an outside shock: Send the error code
③ BCW & LCA system fails: Send the error code
④ The radar is overheated: System conditions - Over Temperature message is outputted.
9.
Rear Cross-Traffic Collision Warning System (RCCW)
Item
Control value
Remarks
Activation speed
 0 to -10 km/h (Reverse)
 Activate when the gear is shifted to R (Reverse) position
Time To Collision Value
 2 - 3.5 sec
 +: closing
Activation distance
 0.5m - 25m
 Vehicle basis

① Generates warning in case of collision risk with the vehicle approaching from left and right side of your vehicle while reversing out of the parking space.
② Based on the Time To Collision (TTC), the warning is generated for the vehicle that is possible to collide within 3.5 seconds.
Hyundai Palisade. Description and operation   
"Time To Collision (TTC): Time calculated using the relative distance/speed which is the time until the possible collision. (TTC is subject to change depending on the relative speed of the approaching vehicle)."
③ Warning zone is as follows:

Hyundai Palisade. Description and operation
10.
BCA-R (Blind-Spot Collision-Avoidance Assist System - Rear)
Item
Control value
Remarks
Activation speed
 60 - 180 km/h
Same front camera operation condition

11.
RCCA (Rear Cross-Traffic Collision-Avoidance Assist System )
Item
Control value
Remarks
Activation speed
 -1 to -10 km/h (Reverse)
 Activate when the gear is shifted to R (Reverse) position
Time To Collision Value
 2 - 3.5 sec
 + : closing
Activation distance
 0.5m - 25m
 Vehicle basis

① The brake is applied if the vehicle does not stop even the warning is generated due to the collision risk while reversing out of the parking space.
② Based on the Time To Collision brake is applied for the vehicle within 2 seconds.
Hyundai Palisade. Description and operation   
"Time To Collision (TTC): Time calculated using the relative distance/speed which is the time until the possible collision. (TTC is subject to change depending on the relative speed of the approaching vehicle)."

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