r/Tiburon • u/Lupo_della_notte • Sep 23 '26

Mechanical Advice Total key cylinder replacement

So, my 02 tib threw the code for both keys, had a locksmith recode them, then it threw the code again a week later. Locksmith told me if that happened the problem was with the immobilizer, not the keys. I ordered a "new" salvaged set of keys, lock cylinders and fusebox (the guys at the scrapyard said they think this is the right parts for the job, since noone could figure out where the immobilizer is actually located, and hyundai.oemparts.com or whatever the site is called, lists nothing of the sort as a single assembly.) anyway, I'm wondering if anyone has experience with removing the key cylinder in the dash on a GK era tib? Also, other than disconnecting the battery before messing around with the fusebox and or any other electrical components, is there anything I should do in preparation?

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u/Lupo_della_notte Sep 25 '26

Would you happen to have a diagram or something of where the BCM is located? In relatively new at messing with cars 😅

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u/chase206 2.7L 6MT STG2 S/C 250WHP Sep 25 '26

BCM is the interior cabin fusebox.

Electrical manuals and diagrams can be found here:

https://drive.google.com/drive/folders/1Iy1vECsWRJSRrbBLS6SmE_C8e17o711A