I would like to know where the location of the cabin air filter is on my sonata and how to change it.

 

It should be in your owners manual, or check out HMA Service.

 

If it's anything like the Accent's (04 and 07) it's behind the glovebox

 

I changed mine a few months ago. It's PITA to change though. You have to remove the whole glove box assembly and remove the plastic cover right behind it.

 

I thought it was behind the glove box, but I don't have an owners manual. I just don't know which screws to take out. Yea I know.... DUHHHH

 

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The section labeled OM has the owner's manual for your car. The SHOP section has the shop manual, also free. The ETM section has broken image links, so the Electronic Troubleshooting Manual section is pretty worthless.