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Lexus GS 300/GS 430

3068 messages,  Last post on Sep 18, 2009 at 6:41 AM

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What is this discussion about? Lexus GS 300, Lexus GS 430, Sedan


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#2999 of 3068
Re: Poor Low Beam Illumination [bmwconvert] by wwest
Dec 09, 2006 (7:23 am)
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Replying to: bmwconvert (Dec 07, 2006 7:11 pm)

The low beams must be aimed such that at 25 feet the beam "center" is just below the vertical height of the light beam source. So of course the RX series will have better low beam coverage than your GS series and my 996 C4.
 
The problem arises from the comparison of the older incandescent lamps and the new HID lamps. The incandescent lamps were not very BRIGHT in comparison to the HIDs so the FEDs have mandated a much sharper cutoff point for HIDs so they do not interfere with the forward vision of oncoming drivers.
 
Regrettably the earlier HID implementations did not have these more severe restrictions nor does all those aftermarket HID kits to which some of us would like to take a hammer and SMASH each and every one.
 
Seems to me that a good solution would be to have one HID headlamp and one incandescent headlamp.
 
Or instead of the "sharp", definitive, low beam "high" cutoff "shade" how about a "progressive" cutoff, allow some level of beam "penetration" progressively less and less upward beam coverage?
 
"Fuzzy" low beam HID cutoff...?
#3000 of 3068
Re: Poor Low Beam Illumination [wwest] by bmwconvert
Dec 12, 2006 (10:44 am)
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Replying to: wwest (Dec 09, 2006 7:23 am)

wwest, thanks for the insights. One question though: how can vehicle height effect low beam performance? I thought that all vehicles have to have the lighting within a certain bounds. When I've gone through the motor vehicle dept checks, I thought they only compare the light beam to a fixed mark, not adjusting for the vehicle height. My assumption was taller vehicles pointed their lights down at an appropriate angle to be legal.
 
Your comment about earlier HID implementations makes sense. My 2001 BMW 530's low beams were far superior to the GS -- more on par with how the RX looked.
 
We've all been on the opposite side of these lights, so surely they should be set to blinding. However I'm troubled by how mine work where I am regularly looking beyond the lights, even at below highway speeds.
 
My hope is that there's something wrong with my particular HID's, but after two checks at the dealer, I'm afraid not.
 
My last recourse is a specialist from Lexus who is following up on the problem. I'll post the outcome when I find out.
#3001 of 3068
Re: Poor Low Beam Illumination [bmwconvert] by wwest
Dec 13, 2006 (7:45 am)
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Replying to: bmwconvert (Dec 12, 2006 10:44 am)

The low beam "range" adjustment, at least everywhere I have seen it documented, does not compensate for above ground distance, just degrees of declination. That makes sense to me since in order to get the "range" of an over the road tractor/trailer rig my Porsche's low beams would have to be slanted upward, right into oncoming driver's eyes.
#3002 of 3068
Re: Poor Low Beam Illumination [bmwconvert] by chucko3
Dec 18, 2006 (2:47 pm)
Reply

Replying to: bmwconvert (Dec 12, 2006 10:44 am)

Got my 2007 GS350 last week. I noticed the same problem.
And I thought the HIDs are correctly aligned.
Then I found other people complained about this issue.
 
It's a potential problem if one drives on a dark street and
there is a parked car on the street. If one's speeding, he/she may not have enough time to avoid it.
 
In the manual, it says you can adjust the low beam
vertically or horizontally. But I am not going to do it since it's a brand new car. I will give my dealer service
a call next week to see what they say. In the mean time, I
will turn on my high beam on when I am on a dark road & no other cars around.
 
If they can raise my GS HIDs' beam higher, it may blind
the oncoming drivers. Then I will be seeing a lot of
their flashing headlights. That might be why Lexus keeps their HIDs low. But I think it's too low.
 
Please post the outcome when you have it.
Thanks.
#3003 of 3068
Re: Check with Sewell Lexus. [janeg2] by janeg2
Jan 07, 2007 (1:17 pm)
Reply

Replying to: janeg2 (Dec 04, 2006 7:55 am)

vcheng-
 
We have had the local stereo shop install XM radio with the device from vais technology as suggested. The shop insisted that it had to run through the DVD system and use the multidisc screen to operate it.(this is the first of its kind they have installed in a GS300). We activated XM today but cannot get the interface to work except for skipping ten channels at a time. Also, curiously, all FM stations and the XM stations have intermittent skips during the music since the installation.
 
Any ideas that might help us address these problems?
#3004 of 3068
Re: Poor Low Beam Illumination [chucko3] by bmwconvert
Jan 09, 2007 (9:59 am)
Reply

Replying to: chucko3 (Dec 18, 2006 2:47 pm)

Glad to see I'm not alone with this. I am following up with Lexus because I think this problem qualifies as a defect that should result in a recall and repair.
I've been in numerous other vehicles with HID's, including Lexus RX's and LS's, and none of them have the problem. Their lights are all bright, wide, and appropriately far without blinding oncoming drivers.
I encourage other owners who are experiencing this problem to complain to Lexus at 800-25-LEXUS (Araceli Salceda is the representative who's handling my case, although there's been no response as of yet).
#3005 of 3068
Re: Poor Low Beam Illumination [bmwconvert] by chucko3
Jan 09, 2007 (8:42 pm)
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Replying to: bmwconvert (Jan 09, 2007 9:59 am)

Does anyone know if the GS300 uses the same HID lenses?
If it does, Lexus should have numerous complains by now.
#3006 of 3068
Pre-Owned 2006 GS by sst2
Jan 10, 2007 (12:36 pm)
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I just purchsed a pre-owned with less than 5,000 miles. At the moment no owners manual. Not sure everythings works because I don't know how to use most options - i.e., rear window shade. Any idea where I can get a manual cheap? Also, is it possible to buy a ML system from a salvage yard?
#3007 of 3068
Re: Pre-Owned 2006 GS [sst2] by newgs
Jan 10, 2007 (8:49 pm)
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Replying to: sst2 (Jan 10, 2007 12:36 pm)

sst2,
     Can you share how much you paid for your pre-owned 06 GS and what options are in the car? Did you get it from a dealer and is it dealer-certified? Or did you buy from a private seller? Thanks......
#3008 of 3068
Re: Pre-Owned 2006 GS [newgs] by sst2
Jan 10, 2007 (9:05 pm)
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Replying to: newgs (Jan 10, 2007 8:49 pm)

Paid under $37,000. Has nav, spoiler, rear shade. Purchased from an MBZ dealer who took on trade. It's perfect, in and out. I will never buy a used car from a dealer again. Horrible experience. Not certified.

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