Hi, i have a problem with the headlight warning showing up on the car everything i start it is annoying sometimes all headlights work only problem is when it does to auto one side will not work unless i switch it to on on the headlight control i also replaced the ballast on that side which did get it to work but still have a problem with it not turning on with auto mode i also hear a buzzing noise from the other side when there on if i put my ear close enough to the headlight anyone know what could be the problem
Well, if you hear a buzzing sound, see if you have a bad relay anywhere. Just realize those are extremely complex systems and without a Lexus dealer level scan tool, you'll never be able to totally analyze the system. But you could check for relay and loose a corroded wiring yourself then pray it's not a computer module failure
ya i suspect its the mpx body fr controlling piece as the buzzing is coming from there other relays seemed good looked it up and it has like integrated relays i ordered the part hopefully it works