after dropping the car on RSR downs, the headlight beam distance was noticeably reduced.

before going in there and just turning the ***** behind the headlights, i wanted to throw it out there if anyone here knows if the 3IS is equip with the Adaptive Front-Lighting Systems that came on the 2IS?

i ran across this article on CL.

i couldn't find anything in the manual, and i was hoping someone here could chime in before i just go and manually adjust the headlights

 

I'm not sure about the LED headlights, but I'm 99% sure the xenon ones don't have AFS. I've never seen mine move.

 

i have a 15' f-sport and i believe they all come with LED's. i've also never seen mine move

 

The '14 manual does call out auto leveling headlights, but doesn't specify if it applies to the LEDs, the HIDs, or both. It's on page 174 for reference:

 

AFS is for LEFT and RIGHT movement. I do not think any 3IS had this.

Now Auto-Leveling Up and Down, this to me is a mystery. I have never seen mines move up and down that I can recall, BUT there is a sensor that I have found on rear suspension arm Driver side only.

I have not been able to find any other sensor in the front when looking for it like i've seen from other Lexus vehicles with Auto Leveling lights....


For your problem, I would just adjust the **** on headlights and call it a day as that is what i've done also after lowering.

 

sweet. now i just gotta find the ****... and figure out which direction to turn to bring the headlights up.

 

Very useful, thanks!

 

I can confirm that they auto level, I have seen it with my own eyes and can replicate it quite easily if you guys want proof.

 

Can you share more info?

 

They move up and down, on slight gradients they adjust to give you the most light. Say you are going up a positive gradient they will point down a little to compensate and vise versa

 

SYSTEM CONTROL

(a) The headlight leveling ECU assembly receives vehicle height change signals sent from the rear height control sensor sub-assembly LH and calculates the changes in the pitch angle of the vehicle. The headlight leveling ECU assembly drives the headlight leveling motor LH/RH in accordance with the change.

CONTROL MODE - While Stopped

If the vehicle attitude is stable for approximately 3 seconds with the headlights on while stopped, the headlight leveling ECU assembly operates the headlight leveling motor LH/RH in accordance with the detected change in vehicle attitude.

FUNCTION

(a) The rear height control sensor sub-assembly LH detects the changes in vehicles rear ride height due to cargo loads etc., and operates the headlight leveling motor RH/LH in accordance with the changes, keeping the headlight axes at a constant angle.

 

Pretty sure there's no AFS but I've seen it auto-level.

 

As stated above, they do auto-level. I have the 16 F-sport with LEDs. I notice it sometimes when I start the car, it will adjust very slowly but not too far up or down. I do want to point out that it doesn't do a self check start up sequence where it goes all the way up down, the quickly back up as the GS and RX does. In addition, they don't move left to right as the 2IS does in which that is called AFS.

 

please replicate!

 

Will do as soon as it's dark out