Bi-Xenon Headlight Question
02-18-2010, 11:09 AM
#16
Right. That's the way it's supposed to be. The beam pattern itself (shaped by the reflector or an internal shield) is lower on the side of oncoming traffic.
I've never heard of actually aiming the whole headlight bucket lower, though, which also affects the high beam.
And if that's true, then what effect should adjusting the height manually have? How would the self-adjuster know where the beam itself was pointed?
In the shop manual, the headlight aiming instructions specify that for Litronics, you should manually set the headlights to the same level, then turn the ignition off and on to allow the self-adjuster to move them, then set the level again. There's no indication that you should set them to different levels.
I've never heard of actually aiming the whole headlight bucket lower, though, which also affects the high beam.
And if that's true, then what effect should adjusting the height manually have? How would the self-adjuster know where the beam itself was pointed?
In the shop manual, the headlight aiming instructions specify that for Litronics, you should manually set the headlights to the same level, then turn the ignition off and on to allow the self-adjuster to move them, then set the level again. There's no indication that you should set them to different levels.
02-18-2010, 11:29 AM
#17
Weathergirl
Rennlist Member
Rennlist Member
For the scope of this topic, there is no difference. The adjustment procedures are the same.
I do have one idea in re the original poster's observation: how many people aim the headlights with a person sitting in the driver's seat? If you don't, the driver's side will definitely be lower once you get in.
I do have one idea in re the original poster's observation: how many people aim the headlights with a person sitting in the driver's seat? If you don't, the driver's side will definitely be lower once you get in.
02-18-2010, 12:00 PM
#18
Rennlist Member
Thread Starter
For the scope of this topic, there is no difference. The adjustment procedures are the same.
I do have one idea in re the original poster's observation: how many people aim the headlights with a person sitting in the driver's seat? If you don't, the driver's side will definitely be lower once you get in.
I do have one idea in re the original poster's observation: how many people aim the headlights with a person sitting in the driver's seat? If you don't, the driver's side will definitely be lower once you get in.
...of course, this lends credence to never allowing anyone to drive our P-cars! The headlights are as finely tuned as the rest of the car.
10-14-2014, 03:26 PM
#19
Try this: hop into the car, don't put the key in yet. Turn on the low beam (i.e., turn the light switch all the way), then stick your key in the ignition and turn it to ON without cranking the engine. Now, you should see and hear the headlights move. If not, you have a problem.
And yes, my driver side is a little lower than the pax side as well just like your dealer (and my dealer) explained.
And yes, my driver side is a little lower than the pax side as well just like your dealer (and my dealer) explained.
10-14-2014, 05:41 PM
#20
10-14-2014, 06:53 PM
#21
Rocky Mountain High
Rennlist Member
Rennlist Member
On my C4S, the headlights cycled up and down when I first turned on the ignition, not when I turned on the headlights.
10-15-2014, 04:59 AM
#23
any of the other lights (parking, fog, aux. HB) would have worked as a DRL and would not have been as expensive to replace like the $100 OE xenon bulbs!
