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E46 Climate Control
Purpose of the system
Beginning M.Y. 2001, the 325i/it/Ci/Cic and M3 are fitted with IHKR as standard
equipment. The IHKA system is available as an option on these models.
IHKR is a semi-automatically regulated heating
and air-conditioning system, similar to the
IHKR introduced for the 2001 E39 and E53.
The purpose of the system is to allow the
vehicle occupants to select the desired
temperature, air outlet distribution and volume
manually.
The system then automatically regulates the
temperature of the cabin based on the manual settings.
The functions provided by the E46 IHKR are:
• Control of the blower.
• Air distribution control.
• Stratification flap controlled by a bowden cable
• Temperature Control
• Service Station feature
• Air conditioning request to DME
• Recirculation air
• Ram effect air compensation
• Rear window defroster
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