LOL..

I've been wondering about this lately too. I know it's an auto-dimming feature but it seems awfully dark at night. I'd like it a couple notches higher.

 

The answer is simple: increase your beta-carotene intake!

 

I really don't like the auto-dimming feature. It really doesn't make sense to have a **** to control how bright your gauges that are set to high but still is low. My sister has an LS and I love how bright her gauges are at night. Oh well.

 

I also had this problem on both my 98 and 99 GS400.I disconnected the battery and cleaned the terminals and battery cables.On the 98 it made a huge difference.It is very bright now.On the 99 it made no difference whatsoever.The wierd part is that the 99 had some corrosion and i thought it would be the one to work better.

 

Mine only gets brighter when I am on the hill on the driveway right before I enter the garage.

 

Sorry to bring this back from the grave, but figured it'd be better than to start a new thread.

Has anyone found a way for us to change the auto dimming feature from auto > manual on the dash lights? (Without having to take it to a Lexus stealership.) It took me forever to realize that those 2 sensors I had wondered so much about on the dash are what's causing it.

EDIT: Found a little more info, it sounds like the C-Best settings the dealership does is really the only way.

 

Yup it needs changed by the dealer to light 2 for maximum brightness, I'm calling them Monday I can't take it anymore....
Edit: just came from the dealer theirs no difference c settings suck