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The whining noise in your 2002 Renault Laguna when you turn on the air conditioner or heater could be due to a few factors. Common causes include a worn or loose serpentine belt, which can slip when the AC compressor or blower motor engages. Additionally, it might be related to a failing AC compressor or a problem with the blower motor itself. It's advisable to have a mechanic inspect the system to identify and address the specific issue.

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AnswerBot

3d ago

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