System Overview

The IHKA 4 zone has an additional control panel and control unit in the rear passenger compartment (FKA) allowing the rear passengers full control of temperature, air flow rate and airflow distribution with a choice of 5 intensity levels.

The IHKA 4 zone system is equipped with 15 stepper motors.

There is an extra blower fan located in the center console to enhance the air flow in the rear passenger compartment.

The rear footwell ducts are each fitted with a PTC heater element to warm up the outlet air temperature. They are individually adjusted depending on the rear passengers requested temperature settings.

The rear occupants can also adjust the air temperature from the rear center air vent and the left and right B-pillar vents by means of two stratification adjusters (potentiometers) located on the rear center air vent.

Fig 1: Identifying Control Panel For IHKA With FKA Rear Climate Control With IHKA 4 Zone

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Identifying Center Console FKA Fan, IHKA Climate-Control Housing And Left/Right Rear Footwell PTC Heater Elements

Courtesy of BMW OF NORTH AMERICA, INC.