Lexus Troubleshooting Questions? Ask a Lexus Expert
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
Do the large amp fuses under the hood have battery voltage?
Check all the high amp fuses for battery voltage using a volt meter.
Let me approach this different.
Remove the IGSW 40amp fuse at the left kick panel. What voltage do you get there?
All vehicles use DC power.
Follow these steps.
This is my 1st answer, but does not have to be my only answer. You the website and myself expect you to have a ~~~5 STAR EXCELLENT~~~ experience with my help. Please let me know if you are pleased by selecting a star rating above or by replying and saying your pleased. Not rating or rating 1-2 stars does not benefit you nor me in any way. Follow up and reply as often and when needed, there is no extra charge to do so.
A battery can not have 17.5 volts. It would blow up. There is something wrong with your meter.
Are you sure your getting 17.5 at the fuse I had you remove, your not getting battery voltage there as well?
Okay, I will be on later.
Sorry I think its best I opt out. I am not able to teach how to use a DVOM then how to diagnose and fix the car. I am removing myself from this post now. best of luck.