2001 BMW X5 Evaporator

Climate Control Systems (IHKR/IHKA)
Two climate control systems are offered on the X5, the manual IHKR system is standard
equipment on the 3 liter X5 and the IHKA system is available as an option. The IHKR is a
new system for US production and the IHKA is taken from the E39 vehicles.
Condenser/Receiver Dryer
The X5 incorporates a new design air conditioning condenser/receiver dryer for both the
manual (IHKR) and the automatic (IHKA) systems. The dryer cartridge and condenser are
one component with the dryer integrated on the left side. The dryer cartridge contains a
replaceable filter screen and dryer unit.
The condenser is partitioned which divides the condenser into cooling sections. The hot
refrigerant flows across the condenser and into the dryer through inlet holes at the lower
1/3 section of the cooling fins. After the refrigerant passes through the dryer it returns to
the evaporator through the outlet hole and bottom 1/3 section of the condenser.
Condenser Side View
Receiver Dryer
Filter
Screen
Bottom View
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17
IHKR Control Unit
• Integrated control module with oper-
ating panel.
• IHKR heater/air conditioner unit with
- 1 heat exchanger temperature sensor
- 1 evaporator temperature sensor
- 1 footwell temperature sensor
- Blower motor
- 1 stepper motor (high speed fresh/rcirc air)
45
80 72
TEMP
0
64530003

19
45
80 72
TE MP
M
+
+
+
½
P
1
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6
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10 15 20 40+
DME
M
KL31
KL30
KL15
Fan Speed
Request
A/C Compressor
Recirculation
Rear Defrost
Temperature
Control
Evaporator
Temperature SensorWasher Jet Heater
Blower Relay
Blower
Blower Motor Ouput Stage
M
Rear Window Defoger Relay
Aux. Fan Speed Relay Control
Water Valve
Fresh Air Flap Motor
IKE
DME
Compressor Control
Aux. Fan
IHKR
K-Bus
Refrigerant Pressure Sensor
C
A
N
DIS & Modic
IHKR IPO
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