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.