The seatback pocket is provided on the back of the front seatbacks.
WARNING
To prevent the Occupant Classification System from malfunctioning:
Do not hang onto the front passenger's seatback.
CAUTION
Do not put heavy or sharp objects in the seatback pockets. In an accident they could come loose from the pocket and injure occupants.
Hyundai Sonata LF 2014-2019 Service Manual: Rear Seat Belt Retractor Repair procedures
Replacement
•
When installing the belt, make sure not to damage the retractor.
1.
Remove the rear package tray trim.
(Refer to Interior Trim - "Rear Package Tray Trim")
2.
After loosening the mounting bolt, then remove the rear seat belt lower anchor (A).
...
Hyundai Sonata LF 2014-2019 Service Manual: Drive Belt Tensioner Repair procedures
Removal and Installation
1.
Remove the drive belt.
(Refer to Timing System - "Dreve Belt")
2.
Remove the alternator.
(Refer to Engine Electrical System - "Alternator")
3.
Remove the alternator bracket (belt tunsioner) (A).
Tightening torque :
19.6 ~ 26.5 N.m (2.0 ~ 2.7 kgf.m, 14.5 ...