2011 Nissan Frontier radio will not turn off when ignition is turned off and key is out. I have to turn the radio itself off.

SOURCE: 1998 nissan frontier 4x4

Well since the lights are controlled by the OBD (on board diagnostics), you'll have to reset it. You may be able to do this by simply disconnecting the battery for a few hours. However, a lot of newer vehicles have electronically locked radios which require the manual to be able to be re-enabled.

I'd check out the radio before disconnecting the battery.

The only other ways are to physically disconnect the lights in the dash or get someone with an OBD reader to clear the codes.

SOURCE: 2005 nissan frontier crew cab won't start

Make sure you have 12 volts from the positive side of the battery to the starter. Check the small wire on the starter solenoid and make sure you have 12 volts when cranking engine. If voltage is correct, the starter is bad

SOURCE: 2004 Nissan Xterra. Battery died and now the radio will not turn

Hi, check the fuse box for a blown fuse in the radio slot. sometimes during jumps, this fuse will blow.

SOURCE: 1999 nissan frontier is idling rough the truck

This can be your Idle control valve, when you turn the air on it puts the engine under load and your computer will increase the idle automatically to prevent the engine from cutting out.
When you are standing still and the car is shaking, by touching the accelerator very softly does the shaking stop? If so check the idle control valve.
I hope this will help.
Regards
Sam

SOURCE: 99 nissan altima 4dr. key will not turn ignition

sometimes if the steering wheel is in a bind the switch will not turn try turning the wheel a bit while at the same time turning the switch good luck