Light bulbs If any exterior light does not turn on, have it replaced by your Toyota dealer. Note: LED lights The lights consist of a number of LEDs. If any of the LEDs burn out, take your vehicle to your Toyota dealer to have the light replaced. Condensation build-up on the inside of the lens Temporary condensation build-up on the inside of the headlight lens does not indicate a malfunction. Contact your Toyota dealer for more information in the following situations: Large drops of water have built up on the inside of the lens. Water has built up inside the headlight. When replacing an electronic component, such as a lights, etc. When replacing an electronic component, such as a lights, etc.