# 2005 Toyota Highlander battery drain **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** toyota, highlander\ **Created:** [May 10, 2018, 5:32pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144 "2018-05-10T17:32:00Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![CarolAiken](https://avatars.discourse-cdn.com/v4/letter/c/ce7236/32.png) [@CarolAiken](https://community.cartalk.com/u/CarolAiken)\ **Post date:** [May 10, 2018, 5:32pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144/1 "2018-05-10T17:32:00Z")
2005 toyota highlander battery constantly draining – electrical short? How to fix? ---
**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\ **Post date:** [May 10, 2018, 10:26pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144/2 "2018-05-10T22:26:47Z")
> [@CarolAiken](#): > > 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? ---
**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\ **Post date:** [May 13, 2018, 9:17pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144/3 "2018-05-13T21:17:07Z")
Do you leave the dome light on? That will drain a battery in no time. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [May 13, 2018, 9:39pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144/4 "2018-05-13T21:39:20Z")
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. > **[Parasitic Battery Drains - AVI OnDemand](https://aviondemand.com/insider/parasitic-battery-drains/)** > > By Dave Hobbs. Para What? It’s amazing how many IATN posts I see with good techs struggling in the area of parasitic battery drains. How much is too much? How to test? I guess I shouldn’t be amazed. I literally grew up in the family auto electric... Tester ---
**Author:** ![CarolAiken](https://avatars.discourse-cdn.com/v4/letter/c/ce7236/32.png) [@CarolAiken](https://community.cartalk.com/u/CarolAiken)\ **Post date:** [May 14, 2018, 1:58pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144/5 "2018-05-14T13:58:58Z")
Thanks for the responses! We are going to have the battery tested…should have done that before I posted here. ---
**Author:** ![BillRussell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/billrussell/32/3179_2.png) [@BillRussell](https://community.cartalk.com/u/BillRussell)\ **Post date:** [May 14, 2018, 5:57pm UTC](https://community.cartalk.com/t/2005-toyota-highlander-battery-drain/117144/6 "2018-05-14T17:57:47Z")
> [@CarolAiken](#): > > We are going to have the battery tested you also want a test for parasitic drain. And have your charging system tested.