ES350 Problems with radio/bluetooth/rear camera.
I have had an intermittent problem with the radio, Bluetooth, rear camera for about 6 months. Occasionally the center display simply doesn't come on. Other times it comes on and the rear camera works but the radio and all Bluetooth functions do not. I have tried one backyard mechanic trick to turn and press the volume controller over and over to no avail. My question is what part is common to these three systems? Could it simply be a glitching computer component?