2005 Toyota Highlander battery drain

2005 toyota highlander battery constantly draining – electrical short? How to fix?

Original battery? How old is the current battery? Have you had your charging system tested?

Do you leave the dome light on? That will drain a battery in no time.

Finding a parasitic current draw is no easy task. Especially on new vehicles with all the computers/modules.

Here’s an article that describes what’s involved when doing so.


Thanks for the responses! We are going to have the battery tested…should have done that before I posted here.

you also want a test for parasitic drain. And have your charging system tested.