Automatic Dimming High Beams
Thread Starter
Rookie
Joined: Dec 2004
Posts: 65
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From: NY
Automatic Dimming High Beams
I just leased a 2010 Rx-450h. The saleman stated it come with the auto dimming high beam, but it was not listed on the sticker. The manual states, the regular light icon, has auto underneath. Is the auto dimming high beams an option or is it standard.
Thanks for any help
Thanks for any help
CL Community Team
Joined: Aug 2006
Posts: 12,519
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From: San Francisco, CA
it was removed from the bi xenons and is only available for the LEDs
I think people were complaining about how they were too sensitive to reflective road signs and road lights, so it was removed mid cycle.
I think people were complaining about how they were too sensitive to reflective road signs and road lights, so it was removed mid cycle.
Pole Position
Joined: May 2009
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From: GA
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Rookie
Joined: Jul 2010
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From: Texas
Take a look on the back side of your rear view mirror. (the side with no mirror) If you have the option there will be a small camera window. This little camera senses the light as it approaches the car. This technology is over 60 years old.
Cadillac is the first to use it. It was in all my cars in the 70's & 80' on the high end cars Cadillac made.
Cadillac is the first to use it. It was in all my cars in the 70's & 80' on the high end cars Cadillac made.
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No, I don't play soccer!
Joined: Jul 2009
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From: NJ
Another pretentious 450h here 
thedon, here is a picture of what bluesurf is talking about. You can see the camera lens through the front windshield. I have mine off because high beams are a bit too bright since I changed out the DRL/high beam bulbs. Now they turn off quickly enough but I don't want to blind anyone. It's also congested by me.
thedon, here is a picture of what bluesurf is talking about. You can see the camera lens through the front windshield. I have mine off because high beams are a bit too bright since I changed out the DRL/high beam bulbs. Now they turn off quickly enough but I don't want to blind anyone. It's also congested by me.
Thread Starter
Rookie
Joined: Dec 2004
Posts: 65
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From: NY
Looking at my reaview mirror from the outside, there is a small square lens on the right side of the mirrior looking in. Is that waht you are talking about. Also, the car was bulit in 1/10
Thanks
Bobby
Thanks
Bobby
Lexus Test Driver
Joined: Dec 2009
Posts: 1,146
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From: AZ
I was referring to the 2011's didn't realize there were tired 2010's still floating around.
2011 450h with the LED headlights does have the auto dimming. The Lexus website is not consistent with it's info.
2011 450h with the LED headlights does have the auto dimming. The Lexus website is not consistent with it's info.
Last edited by MEP7557; Oct 17, 2010 at 03:57 PM.
Pole Position
Joined: Mar 2007
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From: Sakon Nakhon
I used this system for a 4-hour night highway drive yesterday, and kept the Auto system active the whole way. The system worked flawlessly, and reacted instantly to either oncoming headlights, or when it spotted the red lights of cars in front.
A poster above mentioned this technology has been around for 60 years. I drove a Lincoln in the Seventies, and remember cars in the Sixties, like Caddies, Olds Toronado & Lincolns equipped with this feature. However, the Lexus implementation which uses a CMOS camera, is much more advanced and much more responsive than the old electric eyes. Back then, you were given a dial-type switch to adjust the sensitivity to-and-fro. The old version did not react to red tail lights, and was fickle overall at best, but it was innovative for its time.
I've tried to use it in and around town, but it flashes on and off much too often (as it should), so I would only recommend using it in rural areas or highways.
From Wikipedia:
Automatic Beam Switching
Early systems like Cadillac's Autronic Eye appeared in 1952 with an electric eye atop the dashboard (later behind the radiator grill) which was supposed to switch between low and high beam in response to oncoming traffic. These systems could not accurately discern headlamps from non-vehicular light sources such as streetlights, they did not switch to low beam when the driver approached a vehicle from behind, and they spuriously switched to low beam in response to road sign reflections of the vehicle's own headlamps. Present systems based on imaging CMOS cameras can detect and respond appropriately to leading and oncoming vehicles while disregarding streetlights, road signs, and other spurious signals. Camera-based beam selection was first released in 2005 on the Jeep Grand Cherokee, and has since then been incorporated into comprehensive driver assistance systems by automakers worldwide.
Early systems like Cadillac's Autronic Eye appeared in 1952 with an electric eye atop the dashboard (later behind the radiator grill) which was supposed to switch between low and high beam in response to oncoming traffic. These systems could not accurately discern headlamps from non-vehicular light sources such as streetlights, they did not switch to low beam when the driver approached a vehicle from behind, and they spuriously switched to low beam in response to road sign reflections of the vehicle's own headlamps. Present systems based on imaging CMOS cameras can detect and respond appropriately to leading and oncoming vehicles while disregarding streetlights, road signs, and other spurious signals. Camera-based beam selection was first released in 2005 on the Jeep Grand Cherokee, and has since then been incorporated into comprehensive driver assistance systems by automakers worldwide.
