IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Question regarding AFS option on headlights

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Old 03-04-13, 07:50 PM
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jbone29
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Default Question regarding AFS option on headlights

How far is the lights supposed to move from left to right and right to left? Mine barely move at all to notice. I just went to my garage and made sure the afs mode was on and turned my steering wheel both ways and could barely notice. My wife has a G35 and her headlights rotate way more than mine. I also had the garage completely dark except for my headlights being on. Just your thoughts, thanks.
Old 03-04-13, 07:55 PM
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CalitriSC
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They do barely move on Lexus AFS. I think it's 15% if that. On Mercedes and other brands you actually notice is because their projector turns much more.
Old 03-04-13, 08:00 PM
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ScoobyLai
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If its super dark where you are driving, you will notice it. I didn't believe until I drove down to a street with no city lights.
Old 03-04-13, 08:01 PM
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supralative
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I notice mine move more turning left than turning right.
You have to really look for the movement when turning right to see it.
On my father's LS460 you can see the movement really easy.
Old 03-04-13, 08:10 PM
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Joshohoho
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I barely notice mine too, but I just leave it on.
Old 03-04-13, 08:28 PM
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212LeX
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The IS models are not easily noticeable as other cars, but they do move, and they move while in motion at a certain speed and how much of a turn is being make., the sensor, the computer figures this all out instantly
Old 03-04-13, 08:38 PM
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jbone29
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Thanks, I read somewhere that they move a lot more at 26mph and up. Kind of hard to notice at that speed compared to turning left or right.
Old 03-04-13, 10:34 PM
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davyjordi
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i don't even know how to turn the option on or off! ha! anyone care to explain what is probably ridiculously simple?
Old 03-04-13, 11:25 PM
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KillaIS250
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Yeah it's really not that much of a difference until you make a turn on streets that are literally pitch black. I went through a completely dark tunnel with a turn and it was pretty cool to see the AFS working around the turn!

Originally Posted by davyjordi
i don't even know how to turn the option on or off! ha! anyone care to explain what is probably ridiculously simple?
On the left side of the steering wheel, under the **** that adjusts the brightness of the gauges, you should have the buttons to change settings (circle button with a left and right arrow on both sides). If you have AFS, you can use the arrow keys to go to the AFS option and turn it on or off. Not all models came with AFS tho.
Old 03-05-13, 12:51 AM
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UpSideDown
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Originally Posted by jbone29
How far is the lights supposed to move from left to right and right to left? Mine barely move at all to notice. I just went to my garage and made sure the afs mode was on and turned my steering wheel both ways and could barely notice. My wife has a G35 and her headlights rotate way more than mine. I also had the garage completely dark except for my headlights being on. Just your thoughts, thanks.
Its activated when car is moving faster than 50km/h (had it on my last 09 IS). Also the AFS turns more to the left than right. It is quite noticeble in the night.
Old 03-05-13, 07:15 AM
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Jeff Lange
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You won't see anything when you're stopped. Lexus AFS is speed sensitive and will move significantly more the faster you are driving.

When making a right turn, the left headlight stays stationary, the right light turns up to 5° to the right.
When making a left turn, the right headlight stays stationary, the left light turns up to 15° to the left.

The minimum vehicle speed to change the swivel is 6 mph (10 km/h) if the steering angle is wide.
The minimum steering angle to change the swivel is 7.5° if the vehicle speed is high.

The AFS ECU calculates the target lighting angle of the LO/HI beam based on the steering angle and the vehicle speed. Then, it actuates the headlight swivel actuators in order to attain the target lighting angle.

Jeff
Old 03-05-13, 07:22 AM
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jbone29
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here is how to check...

Start your car, look to the left of the steering wheel on the dash, there is a group of buttons with a left and right arrow and a round circular button. click either left or right and watch your instrument panel. you will see it cycle through tire pressure, afs, tachometer, etc.
Old 03-05-13, 10:43 PM
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davyjordi
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Originally Posted by KillaIS250
On the left side of the steering wheel, under the **** that adjusts the brightness of the gauges, you should have the buttons to change settings (circle button with a left and right arrow on both sides). If you have AFS, you can use the arrow keys to go to the AFS option and turn it on or off. Not all models came with AFS tho.
Originally Posted by jbone29
here is how to check...

Start your car, look to the left of the steering wheel on the dash, there is a group of buttons with a left and right arrow and a round circular button. click either left or right and watch your instrument panel. you will see it cycle through tire pressure, afs, tachometer, etc.
oh, hah! i looked today and there it was and i never knew what it was for. or rather i never knew what it was for nor took the time to look it up. i'm a lazy baby.

thanks, guys!
Old 03-06-13, 10:05 AM
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lexuscrit
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The AFS sweep on my car is significantly more noticeable when turning left. The sweep on the right is probably less than 5 degrees and in my opinion useless. I wish there was a way to make the right sweep as far as the left. It would seem that the left side should sweep less because our cars are LHD and our lights sweep into oncoming traffic.
Old 03-06-13, 10:08 AM
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tex2670
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Originally Posted by jbone29
Thanks, I read somewhere that they move a lot more at 26mph and up. Kind of hard to notice at that speed compared to turning left or right.
IIRC 15* left; 5* right; no movement at low speed (10-15 mph). I thought they did away with AFS in later models--I had a '12 loaner with HID, but no AFS.


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