Does the 2005 Toyota Avalon have aux input?

The 2005 Toyota Avalon doesn't have an aux input. You will come into problems with the sound. This could be from the stereo's speakers or a phone that is connected to the vehicle. Whatever the source, You will need to have these issues solved quickly. If the issues are from the stereo's speakers, it might be static sounds, randomly turns off, a loose wire, or a blown fuse. If the issues are coming from the phone, it could mean that the software won't update, the device won't sync with the vehicle, the phone's battery is too low, or something is blocking the signal.