The stabilizer is likely to be creak (the rubber band is pressed to the body) of the transverse stability stabilizer. Rubber is worn out and, over time, begins to make a squeaky sound.
It is desirable to periodically smear the rubber with silicone grease. If the violin is left behind, you need to change the box or stabilizer.
Usually, the creaking in the Renault Fluency suspension is enhanced with a lower temperature.