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Old 07-27-2014, 01:10 PM
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Default How to code IHKA - replaced heater control unit

hi all

I have a 2005 E90 320d. I have swapped out the old AC heater control unit for a newer one that has the silver rings on the max and rest buttons. They both look virtually the same.

However, it doesn't work as my old unit. Fan speed definately does not reach the speed it did on the other one and the 'snowflake' cooling button doesn't actually cool the air.

I take it I have to code the unit to the car? How can I do this.

I have a working v57 DIS, INPA, NCSExpert and maybe SSS works too (haven't tried). I cannot access the function in INPA that apparently allows you to possibly reset the IHKA - it comes up with a 'klima' error.

Also, when I read the error memory on the car, KLIMA gives these two -

9c53

and

E72E

both with '24' next to them. I don't know if this is related.

Any help would be appreciated, cheers


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  #2  
Old 08-04-2014, 07:18 PM
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What is the description of the fault codes?
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Old 08-15-2014, 02:55 AM
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You can take it to your dealer to read DTCs from the unit, or you can do it yourself using a bmw scanner.
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Old 08-17-2014, 05:11 PM
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Cheers both but I got it fixed - after a long drawn out process of getting my datens up-to-date, I restored to factory settings the IHK module and boom - ice cold air now coming out with the snowflake button! Fans on the max setting seem to be on tornado mode now as well which is nice when I need me air quickly.
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Old 08-18-2014, 03:53 AM
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Glad you got it fixed
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Old 12-05-2014, 06:00 PM
sia sia is offline
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How can I restore IHK to factory settings?
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