
Tail light (Type A)
1. Open the trunk.
2. Loosen the retaining screw of the trunk lid cover and then remove the cover.

3. Disconnect the connector and then remove the nuts by turning the nuts counter clockwise.

4. Take the light assembly out.

5. Remove the socket from the assembly by turning the socket counterclockwise until the tabs on the socket align with the slots on the assembly.
6. Remove the bulb by pulling it out.
7. Insert a new bulb by inserting it into the socket.
8. Install the light assembly to the trunk.
9. Reinstall the nuts and connector and then the trunk lid cover by pushing in the screw.
Stop/Tail light (Type B)
Your vehicle is equipped with LED lamps. LED lamps do not have replaceable bulbs. If the LED lamp does not operate, have the vehicle checked by an authorized HYUNDAI dealer.
Backup lamp (Type A/Type B)
If the light bulb does not operate, have the vehicle checked by an authorized HYUNDAI dealer.
Rear Combination Light Bulb Replacement
High Mounted Stop Light ReplacementHyundai Elantra AD (2016-2020) Service Manual: Crankshaft Position Sensor (CKPS) Repair procedures
   Inspection
1.
Check signal waveform of CKPS and CMPS using a scan tool.
Specification : Refer to "Waveform"
Removal 
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable. 
2.
Disconnect the crankshaft position sensor connector (A) and remove the sensor af ...
   
Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
   Description
Back view camera will activate when the backup light is ON with the ignition switch ON and the shift lever in the R position.
This system is a supplemental system that shows behind the vehicle through the AV monitor while backing-up.
    
 • 
This system is a sup ...