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2013 Kia Optima
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562 Posts
Discussion Starter · #1 ·
Got a real head-scratcher for you all:

Is it possible to upgrade the base HVA/C system in the 3rd Gen LX to the higher trim EX system?
Is the vehicle wiring basically the same, and attaching the higher grade controls merely a case of plug-and-play?
Or, do you need to purchase some additional components to make it work?
 

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2011 Kia Optima
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3,575 Posts
Without going into all the differences, the main differences is that the AC/Heater assembly, evap case, blower assembly is different with the ATC.
 
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