Newly Installed HiD won’t Dim!

Howdy, Foax!

Just replaced the HiD bulbs in our 2005 Prius for the first time. Unhappily, though both bulbs operate, the driver’s side bulb has no “low beam.” Could this be a defect in my installation? (Of course, I realize that I can resort to the old bulb-swapping routine, and I will do this if necessary, but given the effort required to perform that trick I thought it best to ask here first!)

Thanx & best regards, Walt

 

Great idea, nh7o! (Sorry for the late response: I was sidelined by two funerals and a week-long illness; ain’t Life just full of little surprises?) I saw the “mirror” as I inserted and aligned the HiD bulb – it’s seems to be a paper-thin foil with a number of “fingers,” but the Bentley manual’s exploded drawing (p. 10-14) does not clearly identify this. Am I correct in assuming that the HiD Headlight Control Module (aka “ballast” and/or “mini-computer”) controls this mirror? If so, am I also correct in supposing that the only way to pursue this repair is by removing the entire headlight assembly?