When the wipers no longer clean adequately, the blades may be worn or cracked, and require replacement.
NOTICE
To prevent damage to the wiper arms or other components, do not attempt to move the wipers manually.
NOTICE
The use of a non-specified wiper blade could result in wiper malfunction and failure.

1. Raise the wiper arm.
CAUTION
Do not allow the wiper arm to fall against the windshield, since it may chip or crack the windshield.

2. Lift up the wiper blade clip. Then pull down the blade assembly and remove it.

3. Install the new blade assembly in the reverse order of removal.
4. Return the wiper arm on the windshield.
CAUTION
To prevent damage to the wiper arms or other components, have an authorized HYUNDAI dealer replace the wiper blade.
Wiper Blades
BatteryHyundai Elantra AD (2016-2020) Owners Manual: Rear Cross-traffic Collision Warning (RCCW) System
   System Description
Rear Cross-Traffic Collision Warning (RCCW) system
The Rear Cross-Traffic Collision Warning (RCCW) system uses radar sensors to 
monitor the approaching cross traffic from the left and right side of the vehicle 
when your vehicle is in reverse.
The blind spot detection rang ...
   
Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
   General Inspection
After or before servicing the EPS system, perform the 
troubleshooting and test procedure as follows. Compare the system 
condition with normal condition in the table below and if abnormal 
symptom is detected, perform necessary remedy and inspection.
Test Conditions	Symp ...