Arcturus

That's what I thought. Just checking as the two seemed to start up close together. For the wheel sensor, it seems to consistently be signalling that the left front wheel sensor has a problem. It starts the alarm when I accelerate up to highway speeds. Then after some driving it turns off. There is also a faint droning noise which I'm thinking maybe a bad wheel bearing. The part is on order. I'll replace it myself when it comes in.

For the headlight levelling I guess I'll have a look when I do the wheel hub. I know we get harsh winters - this one has been particularly bad - with lots of salt so the climate it probably the source. It sucks because these sensors seem to be fairly expensive and I would just assume do without them. I heard you can pull the fuse to disable it.

I'll update you with how I resolve these problems. Hopefully it can be a cheap solution.

Tom57

There is a FAQ on CL here if you've never done the wheel bearing. Here it is:

https://www.clublexus.com/forums/ls4...-06-ls430.html

A bad speed sensor will throw ABS and/or VSC codes. A bad wheel bearing you'll only hear it. Good luck with your repairs.

Arcturus

Hi Tom,

For the headlight levelling sensor, I came across this in a Toyota Prius chatroom:

http://www.sector13.org/jason/prius/...ghtsensor.html

The sensor assembly looks similar to that of the LS. I haven't seen the sensor yet, but I'm wondering if it's the same - or at least similar.

Think the Prius guys of 2004-2005 have a lot of trouble with these sensors as they aren't sealed well. Water leaks in and corrodes the springs.

When my parts come in, I'll check the linkage first and then if that's okay I'll open it up and see if I can see the same thing. I can do a walkthru for other interested people. Fun!

Tom57

The sensor looks similar to the Prius - same electro-mechanical function. I did not try to take my old one apart. As mentioned above, like the Prius thread, I did lube the new one to try and staunch the condition from recurring due to harsh weather conditions. Be sure you note/mark where the linkage arm is bolted since the arm on the sensor has an adjustable location which affects how the sensor aims the headlights.

Tom57

Check out this thread too ...

https://www.clublexus.com/forums/ls4...t-flicker.html

Arcturus

Nice link. Unfortunately it won't let me go to page 2. Grrrr

Tom57

PM Sojah for specific info ...