Control module with operating unit

The IHKA control module records the signals of the IHKA components and controls/regulates the heating and air conditioning process. The control module is at the same time the operating unit of the IHKA.

Fig 1: Identifying Automatic Heating/Air Conditioning System Components

Courtesy of BMW OF NORTH AMERICA, INC.

Index	Explanation
1	Display
2	Air distribution button, bottom
3	Air distribution button, top
4	Air distribution button, center
5	Temperature dial
6	Defrost button
7	A/C button
8	Seat heating switch, passenger's side
9	Power-window switches, passenger's side
10	Rear fog lamp switch
11	Centerlock button
12	Front fog lamp switch
13	Power-window switches, driver's side
14	Seat heating switch, driver's side
15	Rear window heater button
16	Windscreen heater button
17	Air-volume control wheel
18	Recirculated-air button
19	AUTO button
20	MAX button

The IHKA control module also contains the bank of switches. The bank of switches can be used to operate the seat heating (if installed), the heated windscreen and heated rear window, as well as the electrical power windows. The centerlock button as well as the switches for the fog lamps and rear fog lamp are also built in.