LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
BMW
>>
2012
>>
740Li
>>
Repair and Diagnosis
>>
Heating, Ventilation & A/C (HVAC)
>>
HVAC Control Systems
>>
Climate Control - Overview
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Climate Control - Overview
Expand All (for easy ctrl-f)
Collapse All
Introduction
IHKA (4 zone)
System Overview
System Air Flow
Notes
IHKA Blower Fan
Fresh Air Intake
Recirculated Air Intake
Air Ionizer
IHKA Components
Notes
Coolant Circuit of the Heating System
Refrigerant Circuit
Main AC Components
A/C Compressor
AUC Sensor
IHKA Front Control Unit Panel
Front Center Air Vent
Left/right Side Air Vent
Left/right B-pillar Air Vent
FKA Rear Control Unit Panel
Rear Center Air Vent
IHKA Stepper Motors
Service Information