Hyundai Elantra AD (2016-2020) Service Manual: BJ Boot Repair procedures
Removal
1.
Remove the front driveshaft.
(Refer to Driveshaft Assembly - "Front Driveshaft")
2.
Remove the TJ joint assembly.
(Refer to Driveshaft Assembly - "TJ Joint")
3.
Remove the Dynamic damper.
(Refer to Driveshaft Assembly - "Dynamic Damper")
4.
Using a plier or flat-tip ...
Hyundai Elantra AD (2016-2020) Owners Manual: Good Driving Practices
Never move the shift lever from P (Park) or N (Neutral) to any other position
with the accelerator pedal depressed.
Never move the shift lever into P (Park) when the vehicle is in motion.
Be sure the vehicle is completely stopped before you attempt to shift into
R (Reverse) or D (Drive) ...