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E46 Climate Control
Coding
Coding must be performed if the IHKR control unit is replaced. ZCS coding is found in the
Coding and Programming selection from the start screen or when pressing the Change
button. Follow on-screen instructions to remove KL 30 power to the IHKR control unit.
This step is necessary to complete the coding process.
Car and Key Memory
When troubleshooting complaints with the E46 IHKR it is important to note that because
the Car/Key Memory feature can change the operation of the system, a review of the set-
tings should be made prior to beginning troubleshooting.
Only Key Memory selections are possible for the E46 IHKR. The selections are:
• Set Blower Power (Raise, Normal, Lower)
• Correction Set Temperature (raise/lower)
• A/C on at key on (Automatic activation of the compressor control when the ignition is
switched on.)