Lexus Troubleshooting Questions? Ask a Lexus Expert
If you can see that the filament inside the fuse is in tact, then the fuse is good. If it were to be blown, you'd see a noticeable break in the filament, and many times a slight burn mark on the inside of the plastic housing. If you suspect the Alternator is the root of the no-charging problem (which it sounds like it is) there is a quick and easy test for this with the use of a volt meter. With the engine running, take a voltage reading at the battery terminals. If the voltage is not between 13.2-14.4v, or fluctuates in and out of this area, the Alternator will need to be replaced. If you do not have access to a voltage meter, most local "big chain" parts stores, like AutoZone, will run these tests for Free right in their parking lot (except in California). If my answer has helped you, please help me by leaving a rating or accepting my answer so I may be credited. Rating or accepting my answer does not cost you extra. It allows me to be credited for my work. Please rate or accept. You can ask follow-up questions after you rate or accept.
Hi! I noticed this thread was still open and wanted to check in and see how you made out. Was the alternator the problem? Did you have any other questions on this issue?