ANANDROY

I am sole owner of 2007 lexus rx400h, never had problem until for last year my battery almost dies to lst two purple lines in slow bumper to bumper traffic. Once i am out driving less than half mile, battery is fully charged. I had checked out my battery and is okay nothing wrong.
But it is scary. What if my battery dies in middle of city heavy traffic?
What is then wrong.
Alternator? No,then i think battery will not charge.
Electrical, driving almost like this for over six month?
Computer or any sensor
why battery do not go dead over such long time?
Headlight i had changed due to damage and could be faulty wiring. My headlight bulbs goes on or off, sometime do not light right.

takeshi74

Which battery are you referring to? "Purple lines" would seem to indicate the traction battery. The traction battery isn't dying if it's low. It can run low in conditions such as stop and go and/or crawling traffic or any other situation where it is under heavy use.

What changed a year ago or when this started?

thomas1

Maybe you need a diagnosis on Traction battery. You might have a problem with water in the traction battery tray as a few others have had this issue, But generally you get a check engine and code for that problem.