Hyundai Azera: Filter inspection
If the vehicle is operated in the severely air-polluted cities or on dusty rough roads for a long period, it should be inspected more frequently and replaced earlier. When you, the owner, replace the climate control air filter, replace it performing the following procedure, and be careful to avoid damaging other components.
Replace the filter according to the maintenance Schedule.

Filter replacementBody Control Module (BCM) Components and Components Location
Components
...
Body Control Module (BCM) Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Remove the Reinforcing panel after loosening the ...
Rear Door Curtain Assembly Repair procedures
Replacement
1.
Remove the rear door trim.
(Refer to Rear Door - "Rear Door Trim")
2.
After loosening the mounting screws, then remove the rear door curtain (A).
3.
Installation is the re ...