Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2001330CI CONVERTIBLE (E46) L6-3.0L (M54)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGTECHNICAL SERVICE BULLETINSBY SYMPTOMCUSTOMER INTERESTA/C - IHKA MODULE LED IN A/C BUTTON FLASHES
2001 BMW 330Ci Convertible (E46) L6-3.0L (M54)
A/C - IHKA Module LED in A/C Button FLASHES
2001 BMW 330Ci Convertible (E46) L6-3.0L (M54)SECTION 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).
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.
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).
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.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.