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E46 Climate Control
IHKR control unit with operating controls
The IHKR control unit is incorporated into the control panel. The control panel consists of
three buttons and three rotary dials. The control unit communicates over the K bus.
IHKR Case
The E46 IHKR case is similar in design to the E46 IHKA heating and A/C case.
1 2 3 4
5 6
5. Air conditioning request button
6. Rear window defroster button
X608 X610
6 pin 18 pin
X613 X18341
3 pin M-bus 6 pin
1. Blower control potentiometer
2. Recirculation button
3. Temperature control potentiometer
4. Air distribution potentiometer
1. Heater Core Temp.
Sensor
2. Heater core
3. Evaporator Temp
Sensor
4. Evaporator
5. Double Cage Blower
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