Operation CHARM
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BMW
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1990
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535i (E34) L6-3430cc 3.4L SOHC (M30)
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Repair and Diagnosis
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Heating and Air Conditioning
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Description and Operation
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Climate Control Systems, System Specific
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IHKR (Integrated Heating and Air Conditioning Regulation)
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IHKR2
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IPO
IPO
IHKR2 IPO (as introduced)