Car Stereos: Car stereo Fiat Bravo 2007, fiat bravo 2007, constant power

Question
I find answer about auto switching off car stereo in FIAT Bravo but I don't understand.

Please, I have a FIAT BRAVO 2007 year, when I switch off vehicle and pull out a key the Car stereo is still active. I must switch off stereo by press button for volume.

Stereo system is original by FIAT, vehicle is in Dynamic equipment.

Please help me to find solution for auto switching off my stereo when I leave my vehicle. Greetings

Answer
Someone has messed with the wiring to the radio.  The switched power wire has been replaced/switched with a constant power wire.  If so, repair the wiring and it should work properly.  Otherwise, the radio may be malfunctioning and not working properly.  Then, the radio must be replaced.  Hope this helps, Scott