Ihka BMW X5 2003 E53 Workshop Manual

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Hood/Front Grille
The hood on the X5 is distinctive, with two IHKA air intake hood scopes in the center lead-
ing down to the traditional BMW twin grilles.
The grilles are integrated into the hood with
the secondary hood latch springing out from
the grille when the hood is opened.
The four round headlights complete the front
end with Xenon low beans as an option for
the X5. The fog lights as well as the headlight
washers are integrated into the bumper.
Hood Scoops
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Rear Seats
The rear seating area on the X5 offers 1472mm width and 977mm of head room for com-
fortable seating for the rear passengers. Rear cup holders are installed in the center con-
sole below the IHKA outlet grilles which incorporates a separate blower fan for the rear
seating area.
The rear seats have a 60/40 split with the fold down center arm rest on the left seat back.
The center arm rest also includes the optional folding ski bag.
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40 Split
60 Split52530016
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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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Climate Control System (IHKA)
The IHKA is standard equipment on the X5 with the M62 engine and optional equipment
on the M54 version. The IHKA system is taken from the E39 sedan and includes all func-
tions and features of the IHKA currently installed in the E39.
Features of the IHKA system include:
• Integrated control panel/module.
• Separate temperature control for the driver and front passenger.
• Air flap control through the use of bussed stepper motors.
• Automatic Recirculation Control (AUC).
• Recirculation air flap control from the MFL.
• “REST” function for residual heat when vehicle is stopped.
• Service station feature that closes the water valves when stopped to prevent hot water
circulating into the heater cores.
• A/C compressor clutch activation through a final stage control.
• Center face vent stratification control through a bowden cable.
• Separate blower motor for rear passenger compartment
The rear blower motor is located below the center storage box behind the center air outlet
grilles. The blower speed control is mounted in the panel below the outlets. Cool or strati-
fied air is available at the center outlets.
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IHKA Air Flow
The micro filter for the IHKA system is installed in the engine compartment in the center of
the fire wall.
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Warm Air Flow
Stratified Air Flow
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