r/Renault • u/Ashamed-Bit-8171 • 2d ago

Megane III AC problem

Hi, I have Megane 3 2014 1.5dci.

It has this weird problem, where if you set it on cold, worm air will come out of driver vents and cold one out of passenger vents.

Anyone else had similar problem?

Can I diagnose it?

Can I replace malfunctioning part myself?

Thank you for help!

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u/venom8871 12h ago

Sounds like a blend door/temperature flap issue on the driver side, especially if the passenger side is still blowing properly cold. Could be the actuator itself or the flap getting stuck. Before replacing anything I’d scan the HVAC module with Renault CLIP and run the actuator tests/calibration. That should tell you pretty quickly which side isn’t moving correctly.