The driver must be cautious in the below situations because the system may not detect other vehicles or objects in certain circumstances:

[A] : Structure
• Driving where there is a vehicle or structure near
The system may not operate properly when driving where there is a vehicle or structure near.
In certain instances, the system may not detect the vehicle approaching from behind and the warning may not operate properly.
Always pay attention to your surrounding while driving.

• When the vehicle is in a complex parking environment
The system may not operate properly when the vehicle is in a complex parking environment.
In certain instances, the system may not be able to exactly determine the risk of collision for the vehicles which are parking or pulling out near your vehicle (e.g. a vehicle escaping beside your vehicle, a vehicle parking or pulling out in the rear area, a vehicle approaching your vehicle making a turn, etc.).
If this occurs, the warning may not operate properly.

[A] : Vehicle
• When the vehicle is parked diagonally
The system may not operate properly when the vehicle is parked diagonally.
In certain instances, when the diagonally parked vehicle is pulled out of the parking space, the system may not detect the vehicle approaching from the rear left/right of your vehicle. In this case, the warning may not operate properly.
Always pay attention to your surrounding while driving.

• When the vehicle is on/near a slope
The system may not operate properly when the vehicle is on/near a slope.
In certain instances, the system may not detect the vehicle approaching from the rear left/right and the warning may not operate properly.
Always pay attention to your surrounding while driving.

[A] : Structure, [B] :Wall
• Pulling into the parking space where there is a structure
The system may not operate properly when pulling in the vehicle to the parking space where there is a structure at the back or side of your vehicle.
In certain instances, when backing into the parking space, the system may not detect the vehicle moving in front of your vehicle. In this case, the warning may not operate properly.
Always pay attention to the parking space while driving.

• When the vehicle is parked rearward
If the vehicle is parked rearward and the sensor detects the another vehicle in the rear area of the parking space, the system warning may not work properly. Always pay attention to the parking space while driving.
Information
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired operation.
Detecting sensor
Forward Collision Avoidance (FCA) SystemHyundai Elantra AD (2016-2020) Owners Manual: Warning and system control
Rear Cross-Traffic Collision Warning (RCCW) system
If the vehicle detected by the sensors approaches from the rear left/right side
of your vehicle, the warning chime will sound, the warning light on the outside
rearview mirror will blink and a warning will appear on the LCD display. If the
...
Hyundai Elantra AD (2016-2020) Service Manual: Starter Specifications
Specification
ItemSpecificationRated voltage12 V, 1.2 kWThe number of pinion teeth13Performance[No-load, 11.5 V]AmpereMax. 105 ASpeedMin. 2,950 rpm
...