2000 BMW 328i (E46) Technical Service Bulletin # 640100 Date: 000501
A/C - IHKA Module LED in A/C Button FLASHES
GROUP 64
Heating and Air Conditioning
Bulletin Number
64 01 00
Woodcliff Lake, NJ
May 2000
Service Engineering
SUBJECT:
E46 IHKA Control Panel: LED in A/C Button Flashes
MODEL:
E46
Situation:
After installation of a new IHKA control module, the LED in the A/C button (snow flake button) flashes.
Cause:
Flashing A/C LED indicates that the IHKA module is in the A/C compressor protection mode (function designed to ensure adequate refrigerant
distribution during the initial operation of the Air Conditioning system).
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Correction:
After replacement of the IHKA module, the A/C system should be operated for more than 90 seconds at an engine speed below 1500 rpm to disable
the compressor protection feature (until the A/C LED stops flashing).
Warranty Information: For information only.
