If the 2011 Camry's radio display is not working, want is the problem?

There's a number of different reasons why the 2011 Toyota Camry's radio display would fail to work, but the most common is some type of power failure. If You're running a stock radio on Your car, You can typically look to the power input at the rear of the head unit -- if the unit isn't receiving power, then there will be no display. Alternatively, if the sound still works but You're not getting a display, Your radio may be cold. There are a few reports of the LCD display failing in subzero temperatures. Unfortunately, there's not much that can be done about this, aside from replacing the unit. If it seems a temporary problem or doesn't interfere with the operation of the radio, You may want to just wait it out.