IHKA Stepper Motors

The IHKA 4 zone has a total of 15 stepper motors for automatic airflow distribution.

Fig 1: Identifying IHKA Stepper Motor Locations

Courtesy of BMW OF NORTH AMERICA, INC.

INDEX EXPLANATION CHART

Index	Explanation
1	Stepper motor for defroster
2	Stepper motor for left outer air vent
3	Stepper motor for left center air vent
4	Stepper motor for right center air vent
5	Stepper motor for right outer air vent
6	Stepper motor for left front footwell
7	Stepper motor for right front footwell
8	Stepper motor for left rear footwell
9	Stepper motor for right rear footwell
10	Stepper motor for left front stratified airflow
11	Stepper motor for right front stratified airflow
12	Stepper motor for left rear stratified airflow
13	Stepper motor for right rear stratified airflow
14	Stepper motor for recirculated air (on fan motor housing)
15	Stepper motor for fresh/ram air (on fan motor housing)

Fig 2: IHKA (4 Zone) Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

INDEX EXPLANATION CHART

Index	Explanation
1	Double solenoid valves for coolant supply to heater matrix, left/right
2	Electric auxiliary water pump (ZWP)
3	IHKA 4 zone: rain/light/solar/condensation sensor (RLBSS)
4	Not for US
5	Roof Function Center (FZD)
6	Servo motor for fresh air/ram air on air fan in engine compartment
7	Servo motor for recirculated air on air fan in engine compartment
8	Fresh air/recirculated air fan motor
9	Output stage for fresh air/recirculated air fan motor
10	AUC sensor for automatic recirculated air control
11	High-pressure sensor for air conditioner refrigerant circuit
12	Air-conditioning compressor with magnetic clutch and control valve
13	Outside temperature sensor
14	Junction Box electronics (JB)
15	Central Gateway Module (ZGM)
16	Footwell module (FRM), Terminal 58g
17	Central Information Display (CID)
18	IHKA 4 zone: left side vent limit switch and illumination
19	IHKA front center air vent, left/right airflow stratification potentiometer, left/right limit switch and illumination
20	IHKA 4 zone: right side vent limit switch and illumination
21	Left B-pillar vent illumination
22	Heating and air conditioning system/audio control panel IHKA control panel and control unit with interior temperature sensor
23	Front power distribution box
24	Right B-pillar vent illumination
25	Air ionizer on climate-control unit
26	Not for US
27	Stepper motors for automatic airflow distribution on climate-control unit IHKA 4 zone: fifteen stepper motors
28	Air temperature sensor, front center left
29	Air temperature sensor, front center right
30	Left heater matrix temperature sensor
31	Right heater matrix temperature sensor
32	Evaporator temperature sensor
33	Controller
34	Not for US
35	Rear right power distribution box with HHS relay
36	IHKA FKA control panel and control unit with interior temperature sensor
37	IHKA 4 zone: output stage for FKA center-console fan
38	IHKA 4 zone: FKA center-console fan
39	IHKA rear center air vent, left/right airflow stratification potentiometer, left/right temperature sensor and adjuster illumination
40	IHKA w/FKA: PTC heater element in rear left footwell vent duct
41	IHKA w/FKA: PTC heater element in rear right footwell vent duct
42	IHKA w/FKA: temperature sensor in rear left footwell vent duct
43	IHKA w/FKA: temperature sensor in rear right footwell vent duct

The F01/F02 introduces the interactive vehicle owner's manual.

It provides extensive information on system operation, function, configuration and performance.

The information can be accessed via the main menu.

Main menu > (1)
- Vehicle info > (2)
  - Owner's Manual > (3)
    - Keyword search > (4)
      - Climate Control > (5)

Fig 3: Display - Interactive Owner's Manual, F01/F02

Courtesy of BMW OF NORTH AMERICA, INC.

Extensive information is provided on the subject of air conditioning/climate control.

Keyword search > (1)
- Climate control (2)
  - Automatic climate control > (3)
    - Climate control functions in detail > (4)

Fig 4: Display - Interactive Owner's Manual, F01/F02 Climate Control Functions

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 5: Display - Interactive Owner's Manual, F01/F02 Climate Control Functions

Courtesy of BMW OF NORTH AMERICA, INC.

INDEX EXPLANATION CHART

Index	Explanation
1	Climate control functions in detail
2	AUTO program
3	ALL program

Fig 6: Display - Interactive Owner's Manual, F01/F02 Climate Control Functions

Courtesy of BMW OF NORTH AMERICA, INC.

INDEX EXPLANATION CHART

Index	Explanation
1	Climate control functions in detail
2	Temperature
3	Adjusting temperature

Main menu > (1)
- Settings > (2)
  - Air conditioning > (3)
    - Rear air conditioning > (4)

Fig 7: Display - Accessing Air Conditioning Settings From Main Menu

Courtesy of BMW OF NORTH AMERICA, INC.