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F20 driver side heating only and left side only cold air after trying to retrofit IHKA3 High 534
Hello, I have a problem with my 2018 118i F20 LCI. Originally, I had a basic IHKA system with manual, single-zone climate control. I wanted to perform a retrofit, only replacing the IHKA with a dual-zone system. So, I replaced it, coded option 534, and with e-sys, I performed all the coding to keep the system in single-zone mode. Since then, I only have heat on the driver's side, and the passenger side is cold. I then thought I would revert everything to the original settings, so I reinstalled my manual basic IHKA, removed option 534, and recoded everything as it was originally. Despite this, I still have no heat on the passenger side. I have, of course, tried recalibrating the flap motors with ISTA, which was successful, but the problem persists. If anyone has a solution or knows how to help me, I would be very grateful.
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