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BMW TSB #640114
2014 BMW 428
TSB Document:
Affected Component: EQUIPMENT:APPLIANCE:AIR CONDITIONER
- Summary
- Noise from Heating and Air Conditioner. There is an intermittent whirring noise from the IHKA system when the engine is under load between 2,000 and 3,000 rpm, and sometimes at approximately 5,000 rpm. CAUSE Vibrations from the A/C low-pressure hose are resonating into the heating and air conditioning system.
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