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June 13, 2013 Service bulletin

Infiniti: while the compressor for the air conditioner is running, a whinnying or humming noise or low...

Infiniti technical service bulletin ITB-13-021 for 2011-2012 Infiniti M37 and 2011-2012 Infiniti M56.

Bulletin number
ITB-13-021
Component
Equipment: appliance: air conditioner
Summary
Infiniti: while the compressor for the air conditioner is running, a whinnying or humming noise or low pitch moan sound, is heard inside of vehicle, model 2011-12 m37, m56.

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