The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance.
In most cases, you will not need to have your wheels aligned again. However, if you notice unusual tire wear or your vehicle pulling one way or the other, the alignment may need to be reset.
If you notice your vehicle vibrating when driving on a smooth road, your wheels may need to be rebalanced.
NOTICE
Improper wheel weights can damage your vehicle’s aluminum wheels. Use only approved wheel weights.
Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Adjustment
Glass Adjustment
•
Check the glass run channel for damage or deterioration, and replace them if necessary.
1.
Remove the rear door trim.
(Refer to Rear Door - "Rear Door Trim")
2.
Remove the rear door window glass mounting hole plug (A).
3.
...
Hyundai Sonata LF 2014-2019 Service Manual: Seat Belt Pretensioner (BPT) Description and Operation
Description
The Seat Belt Pretensioners (BPT) are installed inside Center
Pillar (LH & RH). When a vehicle crashes with a certain degree of
frontal impact, the pretensioner seat belt helps to reduce the severity
of injury to the front seat occupants by retracting the seat belt
webbing ...