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So our HID only has one bulb. How does it switch Hi/Lo beams?

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Old 12-06-2005, 01:04 PM
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So our HID only has one bulb. How does it switch Hi/Lo beams?

by moving the bulb, or reflector, or the projector lens?
Old 12-06-2005, 01:09 PM
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Old 12-06-2005, 01:23 PM
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They move the reflector.
Old 12-06-2005, 01:26 PM
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pretty sure its a blocking mechanism. maybe its called a reflector plate? if you look closely at the beam pattern you can see a direct cutoff in the beam pattern. Kinda looks like this.

XXXXX/
XXXX /
____/

Basically a plate moves over and blocks some of the light so you dont blind oncoming traffic. the plate causes the backwards L shaped cutoff point. If you put your high beams on, you can actually hear the popping noise as the plate moves...i'm guessing it probably flips up and allows the full beam to project out.
Old 12-06-2005, 01:30 PM
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# months ago, some ppl talked about flickering the HID may impair its lifetime.

So now we know it is safe to do so?
Old 12-06-2005, 01:36 PM
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Originally Posted by Warren803
pretty sure its a blocking mechanism. maybe its called a reflector plate? if you look closely at the beam pattern you can see a direct cutoff in the beam pattern. Kinda looks like this.

XXXXX/
XXXX /
____/

Basically a plate moves over and blocks some of the light so you dont blind oncoming traffic. the plate causes the backwards L shaped cutoff point. If you put your high beams on, you can actually hear the popping noise as the plate moves...i'm guessing it probably flips up and allows the full beam to project out.
Yes, there is a solenoid that moves the plate out of the way, when you flip the brights on. I know this, because I was working on a bi-xenon retrofit for my other car, so I got to study the projectors....
Old 12-06-2005, 02:04 PM
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Originally Posted by gainful
# months ago, some ppl talked about flickering the HID may impair its lifetime.

So now we know it is safe to do so?
Depends on if your HID's are already on or not. If they are on, flickering would probably not harm the HID's because only the plate is moving. Maybe it would shorten the life of the solenoid moving the plate?...dunno But, if your're driving around during the day and your beams are off, flickering the HID's probably would impair its lifetime since you have to cut the beams on and off for them to flicker. I think the most stress on electrical components is generated from constant switching of on/off.
Old 12-06-2005, 02:29 PM
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check this link out

http://www.acuraoemparts.com/delray/...All&vinsrch=no
Old 12-06-2005, 02:41 PM
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about the beam pattern. I noticed on highway I can see farther on passenger side even though both lights are aimed at same height. Is this normal or am I not aiming it right?
Old 12-06-2005, 02:47 PM
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it has a seperate highbeam bulb
Old 12-06-2005, 03:02 PM
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In the garage section, under acura tech news is a section that lists all the really nice high tech stuff the TL has built in.
it describes the shuttle for the high low beams, and all sorts of things like the special hardened steel used on the doors to prevent dings, the exhaust manifolds cast into the head (ever wonder why the car warms up so fast?), and all sorts of other stuff.....good reading...
Brett
Old 12-06-2005, 04:04 PM
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Originally Posted by Actuary
about the beam pattern. I noticed on highway I can see farther on passenger side even though both lights are aimed at same height. Is this normal or am I not aiming it right?
This is normal. DOT allows the passenger side light to aim a bit higher because the opposite traffic is closer to your driver side light and you aren't likely to blind them. Also, most street signs are on the passenger side so you can light them up a bit.
Old 12-06-2005, 04:11 PM
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Originally Posted by Warren803
Depends on if your HID's are already on or not. If they are on, flickering would probably not harm the HID's because only the plate is moving. Maybe it would shorten the life of the solenoid moving the plate?...dunno But, if your're driving around during the day and your beams are off, flickering the HID's probably would impair its lifetime since you have to cut the beams on and off for them to flicker. I think the most stress on electrical components is generated from constant switching of on/off.
Correct.. regarding turning your headlamps on and off rapidly, as in flashing them. You will wear down the ballasts much quicker doing this.

Actually, this is not good for any lamp type, by it HID, flourescent, or incandescent. With filament-type (resistance) lamps, you'll have an increase in tunsten boil-off. This will significantly shorten the life of the filament.
Old 12-06-2005, 04:13 PM
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Originally Posted by fsttyms1
it has a seperate highbeam bulb
No, the TL HID headlamp system utilizes a single HID lamp for each side and a solenoid control shroud that raises or lowers, depending upon whether you are using your high beams of you low beams.

Just one HID lamp per side.
Old 12-06-2005, 04:22 PM
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Originally Posted by SouthernBoy
No, the TL HID headlamp system utilizes a single HID lamp for each side and a solenoid control shroud that raises or lowers, depending upon whether you are using your high beams of you low beams.

Just one HID lamp per side.
Perfectly described SouthernBoy !
Old 12-06-2005, 04:29 PM
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Originally Posted by Adobeman
Perfectly described SouthernBoy !
Thank you, sir.
Old 12-06-2005, 05:43 PM
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Originally Posted by fsttyms1
it has a seperate highbeam bulb
You're in the 3G section, Kris.
Old 12-06-2005, 05:47 PM
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Originally Posted by fsttyms1
it has a seperate highbeam bulb

Did you even read the thread?
Old 12-06-2005, 07:22 PM
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Originally Posted by Brettg
In the garage section, under acura tech news is a section that lists all the really nice high tech stuff the TL has built in.
it describes the shuttle for the high low beams, and all sorts of things like the special hardened steel used on the doors to prevent dings, the exhaust manifolds cast into the head (ever wonder why the car warms up so fast?), and all sorts of other stuff.....good reading...
Brett
You have a thread for this?
Old 12-07-2005, 04:53 AM
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Originally Posted by Brettg
In the garage section, under acura tech news is a section that lists all the really nice high tech stuff the TL has built in.
it describes the shuttle for the high low beams, and all sorts of things like the special hardened steel used on the doors to prevent dings, the exhaust manifolds cast into the head (ever wonder why the car warms up so fast?), and all sorts of other stuff.....good reading...
Brett
Yeah, where is this? I'd like to check this out, too.
Old 12-07-2005, 07:16 AM
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First you click on the >>> 3G TL Garage - Newbies & Return Members Please Read <<< sticky. Then you scroll down to VIII. Acura TL Technical info from Acuranews and click on that, and you have found it.
Old 12-07-2005, 07:30 AM
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Fluid filled electronic controlled engine mounts!

There is a lot of high tech under the surface on the TL.

Brett
Old 12-07-2005, 08:02 AM
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Try this, on a quiet area (maybe in ur garage), sit inside the car, with the door open, and flick the high beam on and off, you'll be able to hear something shifting or moving in the bulb area.
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