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      10-30-2019, 05:23 AM   #1
zeljko
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Drives: Bmw e87 116i
Join Date: Oct 2019
Location: Norway, Kristiansand

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BMW 116i 2005 air comes out only from defrost

Winter is really near and today was like 1 C and air comes out only from defrost.

I have ihkr manual ac control panel Name:  ac panel.jpg
Views: 14
Size:  11.7 KB Changing position with left knob doesn't do anything. Blower works just fine, i can set blower speed to any value but it blows hot just from deftrost. I can start AC, can hear that ac motor is engaged and can hear fan running. Air recirculation also doesn't work. Button emits green light but flap is not moving. Heated seats also doesn't work, but no light on them.
I have tried:
  • checked all fuses,
  • checked cables,
  • run diagnostic scan with ista+ got codes (A6CF - AUC sensor, 9C48 - Mixing flap motor, 9C4A - Fresh/Recirculated air flap motor, 9C4D - Air distribution flap motor) (check attachment)
  • removing errors doesn't help, they show up on next scan
  • AUC sensor is nowhere to be found, or installation for it

Tried also to run module functions for ihkr and i get reading on position of mixing flap but it doesn't move. Also footwell temp/ventilation vent is a little bit off. (check attachment)

Ill try to remove servomotors and somehow test them, and try to test sensors if possible.

Can it be control panel is defected somehow (but like i said i can see when knobs are moving and its angle position)? Any ideas what to look, touch, punch to make it work?? Is it possible that wrong input data from sensors put ihkr to some kind of limp mode?
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