Workshop Hints

Workshop Hints

Transport Mode
To preserve the vehicle battery during vehicle transport, IHKA is deactivated. Transport mode is set during vehicle production and must be disabled prior to vehicle delivery. Transport mode is deactivated with the DlSplus/GT1 under Service Function "Disable transport mode."

AUC Test Mode
Differing from the E46, there is no button combination provided on the control panel that enables a test mode for AUC.

Compressor Run-In Protection
Compressor run-in protection is started automatically after installing a new control panel/control module (important for initial assembly at the factory). The switch on conditions for the compressor, e.g. the outside temperature, are disregarded.

Note: This function has a duration of 90 seconds (with engine running at idle speed). The function light in the A/C button flashes during this period.

Vehicle & Key Memory (VKM)





The following table shows the vehicle & key memory functions for (E85) Z4 IHKA.





The following table shows the vehicle & key memory functions for (E85) Z4 INKS.

Coding
Tropics coding IHKA - The recirculating air function is retained after a new start. In addition, a previously selected recirculating air function is reactivated when the defrost function is switched off. In both cases, the tropics coding prevents moist warm air from the outside flowing into the vehicle interior.
Hot country coding IHKA - In the hot country coding, the increased cooling capacity is achieved by increasing the blower output.
Control panel/control unit coding - The function light on the button for the rear window defogger flashes if the control panel/control unit is not encoded. For instance, right-hand drive or left-hand drive must be coded for activation of the stepper motors to ensure the correct bus addresses are used.

Control Panel/Control Module Mounting





The island design requires a different mounting concept. The control panel/control module is mounted from the rear in the instrument panel. 3 trim rings can be individually replaced from the front. The control panel/control module is secured by 2 side clips and 2 screws at the top.
The IHKS control panel/control module can only be replaced as a complete unit. Individual parts such as rotary knobs cannot be replaced. To remove this, it is first necessary to remove the center fresh air grille outlet and the radio. The control panel/control module can then be removed by pulling down through the service opening in the instrument panel.

Note: Particular care must be taken when removing the control panel/control module to avoid scratches on the front of the unit.

Heater/Air Conditioner Mounting





The heater/air conditioner is mounted by 4 mounting domes on the support tube between the A pillars.
The heater/air conditioner is secured by 4 plastic screws. The plastic screws can be reused several times. Repair kits for the mounting domes are available.

Receiver/Dryer Mounting





The receiver/dryer is mounted with a plastic bracket to the right wheel arch behind the strut tower.
The refrigerant pressure sensor is installed on the refrigerant line leading to the receiver/dryer.

Microfilter
The microfilter is located in the heater/air conditioner unit and is accessed via the footwell on the passengers side below the glove box.