Volkswagen Passat Gamma 5 Radio Issue: Red Buttons Stay Lit After Turning Off & Removing Key

Hello. I have a problem with connecting the Gamma 5 radio. Well, I have the connection - the radio turns on receives everything right, but when I turn it off or remove the key from the ignition switch, the blue display goes out, the radio turns off, but the red buttons remain lit and do not go out. I don't understand why this is happening. I thought maybe after some time it would go out but not. This is a Gamma V radio from Passat with the option of removing the numeric keypad. Maybe it is somehow controlled by the wall? And my Passat has no cana. Adds a diagram according to which I have connected. Please help.

I just thought about it. I just don't understand why this is happening. Is installation done differently in passat fl? How do I do this power consumption should not be at a standstill then what? Because recently because of this backlighting of the buttons, it has fallen to me. A steel car for two days.

In that case, I suggest to connect the backlight and the battery after the ignition switch. It won't fall for sure