Celsius to Fahrenheit Display

This article has been updated by technical service bulletin (TSB) 62 02 97 dated December 1999 (originally published in 1997).

ALLDATA Editor Note: Please verify that the temperature displayed is a setting, and not a readout of ambient temperature, as ambient temperature is a function of the Trip Computer (Accessory) or the On Board Computer (Optional Equipment). Please refer to Accessories and Optional Equipment / Trip Computer for more information. Trip Computer

E36 IHKA production dates and model year information.:

The E36 IHKA control panel/module includes additional programming that allows system diagnosis without the use of the DIS or MoDiC; sensor values and other inputs are shown on the LCD display. This function is found on systems produced from 12-95 through 3-97.


Temperatures are always shown in degrees Celsius, regardless of module coding. Blower speed cannot be adjusted during sensor display mode.






Control Panel/Module Coding

The IHKA control panel/module is coded with the central coding key (ZCS) using the OE Diagnostic Tool. The ZCS coding procedures is the same as on previous systems.

After coding a new or replacement control module, disconnect it from the battery completely (unplug the control module from the vehicle wiring harness) for a minimum of 10 seconds. This allows the new coding data to overwrite any previous coding data.







Coding Conversion Features




Coding conversions provide flexibility for various system functions and allow a vehicle owner to customize the car's climate control system.

The E36 IHKA is capable of the following conversions:

- Temperature C/F
- Blower enhancement - increase the blower default speed (only possible from software version 37, introduced September 1995)
- Air recirculation - retain the recirculate air function for use at restart.