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 replacementCatalytic Converter Description and Operation
Description
The catalytic converter of the gasoline engine is a three way
catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and
separates oxygen from the oxides of nitrogen (NOx). ...
Assist Handle Repair procedures
Replacement
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Use a plastic panel removal tool to remove interior trim pieces to protect from marring the surface.
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Put on gloves to protect your hands.
1. ...
Self-diagnosis
When you shift the gear to the R (Reverse) position and if one or more of the
below occurs you may have a malfunction in the rear parking assist system.
You do not hear an audible warning sound o ...