2008 Hid Lights - Adjustment/leave On?

1) It is safe to leave them on all of the time, but capsule life will be shortened. The capsules are fairly expensive to replace if you do it yourself. If the dealer does it, they are outrageous.

2) The downward aim is mostly a function of the brightness and sharp cutoff of HID lights. Most of us are used to normal headlamps, which spill a lot more light down the road and into the eyes of oncoming traffic. Good HIDs have a very sharp divide between the light and the dark. Yours are probably adjusted the way they should be. If you really need to adjust them, there is a screw adjuster on each lamp assembly.

Tom

 

The auto-leveler for the HID headlamps compensates for the attitude of the car. If you load weight in the back, so it sinks lower under the weight, the front of the car points upward and the HID lights could blind oncoming drivers. The screws on the back of the lights set where the lights point and the auto-leveler keeps them pointed at the same spot with a load.

Don't go blinding other drivers.

 

Hi Gene,

The more that you use the HID headlights, the more quickly the expensive bulbs will fail. However if you feel that having them on during the daytime is a helpful safety measure, then peace.

Regarding headlight aim, I assume your car is under warranty, so why not have your dealer check the aim and correct it if necessary. Maybe the auto-leveling mechanism is not working, which causes the aim to be too low.

 

as others have said, you will burn out the bulbs more quickly by having them on all the time. stick a couple bucks away every month into a bulb replacement fund and you'll be fine. as an unexpected expense, it's a bit of a shock.

since HIDs are so bright, a professional adjustment is safest. DH does not even give out instructions for adjusting these, because the cutoff line for blinding other drivers is so fine.

 

the stock ones light up more than the HIDs? If your daughters lights are anything like mine, then id say your HIDs ahve a problem. My Package 2 has such dim lights that you cant even tell they're on.

 

Standard lights often "light up the street" better than HIDs. That's because they throw light all over the place, even on low beam. HIDs are much brighter, but keep the light where it should be. Many driver's don't like this, as they feel they can't see far enough down the road. That's what high beams are for.

Take your car out at night onto an empty road, and switch between high and low beam. If the high beams give you good illumination down the road, then the lights are adjusted properly. Most likely it's just a matter of you not being used to the sharp contrast of bright and black caused by the sharp cutout of the HID low beams. That's the way they are supposed to work.

If, on the other hand, your high beams are pointing down, then take your car to the dealer to get the lights adjusted.

Tom

 

We drive with them on all the time for safety...does anybody know off hand how much they cost to replace?

 

I just changed BOTH headlights on my Prius 2007 even if only the driver side was failing , I read before that is better to change BOTH even if only was is not working, eventually the other one will go off too. I paid on Amazon $ 100 for both and guess what.. they identical to the ones ( D4R). TOYOTA sells you for $ 150 each (they "cut the price in half" after a lawsuit) even the kragen or auto zone sells them for $ 165 each.
After I changed the lights I noticed the lights were on the roofs or the trees...Does anybody knows how to adjust them? Does Prius 2007 have an automatic leveler? Can I adjust it by hand? where is the automatic leveler? where can I adjust them by hand?

 

After I changed the headlights on my Prius 2007 I noticed the lights were on the roofs or the trees...Does anybody knows how to adjust them? Does Prius 2007 have an automatic leveler? Can I adjust it by hand? where is the automatic leveler? where can I adjust them by hand?

 

If they are on the trees, you probably did not seat the base of the bulb properly. It should be close, but slightly different, to where they were before after you install the bulb. Then you slightly change the adjustment with the thumbnail screws on the bottom side of the headlights to raise the entire reflector portion up and down.