rominl

iTrader: (4)

um..... are you sure that's the hid? i think it's the brake reservor, i have that all the time. first of all if your hid goes up and down all the time even during normal driving, that's very bad idea, something is wrong with the autoleveling computer. second of all, if you can hear the hid motor moving inside the cabin when driving, man, the motor needs some lube

Cadd

If it's not the HID motor, do you think it's the brake reservior? I hear it constantly (especially when I'm at a traffic light or driving really really slow where there is no wind noise).

Since you hear it too, I guess it's "normal"? I hear it almost EVERY SINGLE TIME I drive.

Cadd

Just realized something....I don't have auto-leveling

I went to lexus.com's CPO library and only the 2000+ GS4s have the HIDs with auto-level. My 99 doesn't. Oh well.

SeattleGS400

iTrader: (1)

Cadd:

Just a FYI, but ALL GS3/GS4 with HID headlights have autoleveling (so long as it came originally with the car). I have a 99 with HIDs, and I've been in 98's with HIDs, and they all do the autoleveling (down then up) diagnostic when you first start up the car w/ the lights on.

If you don't believe me, turn on the ignition to ON, but don't start up the car. Then turn on your HID headlights and leave the HID headlights to ON (by now, they won't move as it's already too late). Now turn the ignition to OFF, and take out the key, exit the car and push the lock button twice (once to lock the car, twice to shut off the lights). Next, unlock the car, get in, and turn the key ignition to ON (you don't have to start the car), and you'll see that the front HIDs will turn on automatically and do their down-up diagnostic.

Cadd

Cool!

I didn't go through that process. I just turned my headlights on and off and didn't see any movements. I didn't realize that I had to turn the car to the "ON" position.

Now, what would happen if you have the car in the "ON" position and THEN turn on your lights? An example would be you're driving around and you decide to turn on the lights. When you turn them on, would the auto-adjust?

I'll give it a shot tomorrow.

BTW, why doesn't the CPO library in the Lexus website show MY1999 have the auto adjustment?

But thanks for the info.

SeattleGS400

iTrader: (1)

If say you were driving, then turned on your HID headlights, your headlights will just fire forward and adjust to aim the beam parallel to the road as it's supposed to (FYI, at this time, it won't do it's initial down-up diagnostic). The only time it'll do its down-up diagnostic is when you first put your keys in and turn it to "ON" or to start up the car--even if you have the headlights to "OFF", it'll still do a down-up diagnostic to test the motor actuators. If somethign is wrong with your car's HID headlights, the dash HID warning light will light up and remain lit up.

Nice to know your car has the autolevelers eh?

PhantomZX

The autoleveling diagnostics are very noticeable at night - I'm surprised to see so many people who never saw it before.

One thing I noticed was that the autoleveling on my 99 GS4 was very slow to react compared to the RX330 I got as a loaner. When going up/down driveways, there would be a 1 second delay before the headlights re-aimed themselves, whereas on the RX330, it seems like the reaction was immediate.

PhantomZX

It's most probably this:

https://www.clublexus.com/forums/sho...=ABS+self+test

Cadd

Thx Phantom!

rgarjr

iTrader: (1)

Anybody know how many sensors the auto leveling system has? Anybody had any problems when they swapped out their OEM strut/springs with lowered ones?

rominl

iTrader: (4)

i believe two, one for front wheel and one for rear wheel. if you put on coilover and lower the rear really bad without the front going low, it could make the light comes on

SeattleGS400

iTrader: (1)

Romini has it right--2 tandem sets (front-rear for each side). The computers monitor the level difference between the front and rear units and modify the angle of the headlight on that side accordingly. That is, if you lower your car evenly, the drop will be the same and it won't affect your autoleveler function--but if you get an asymmetrical drop (i.e. back lower than the front) like romini suggested, then, yes, you'll have it constantly aim at a different angle to get it to shine parallel to the road.

sam430

iTrader: (10)

pretty much makes the autoleveler almost useless. So if I'm driving at night and hitting hills, the leveler will never react fast enough.

jjbenzo

The auto-leveling feature was only offered on cars equipped with HID headlights.

sakataj

iTrader: (182)

way to bump a 6 year old thread for nothing sam hahaha

dont follow him into this doom. lol jk