My car radio is not turn off when the car is turn
This could be an issue with the ignition wiring. Most radios have 2 feeds. A 12v permanent live (often a red cable) and a switched 12v from the ignition (often a yellow cable). If the switched 12v is wired the wrong way round or linked to a permanent 12v then the radio won't switch off when you remove the key. Could be the ignition switch itself stuck on all the time also.
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