Hyundai Elantra: Rear Corner Radar System / Troubleshooting
Diagnosis with Diagnostic tool
1. | In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool). The diagnostic system (Diagnostic tool) provides the following information. (1) | Fault Code Searching : Checking failure and code number (DTC) |
(2) | Data Analysis : Checking the system input/output data state |
(3) | Actuation test : Checking the system operation condition |
(4) | S/W Management : Controlling other features including system option setting and zero point adjustment |
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2. | Connect the cable of Diagnostic tool to the data link connector in driver side crash pad lower panel, and turn on the Diagnostic tool. |
3. | If diagnose the vehicle by Diagnostic tool, select "DTC Analysis" and "Vehicle". 
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4. | If check current status, select the "Data Analysis" . 
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5. | Select "BCW", if you want to check current data of BCW system. 

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6. | If you want to check each module operation forcefully, select "Actuation test". 
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DescriptionRear Corner 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...
Components1. Rear corner radar unit2. Speaker3. Warning indicator..
Other information:
The system assists you with steering the
vehicle. If the vehicle is turned off or
if the power steering system becomes
inoperative, you may still steer the
vehicle, but it will require increased
steering effort.
Also, the steering effort becomes heavier
as the vehicle’s speed increases and
becomes lighter as the vehicle’s speed
decreases for better control of the
steering wheel.
Shoul..
Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system..