# 2000 Toyota Celica - Fast battery drain **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** toyota\ **Created:** [March 28, 2020, 10:26pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019 "2020-03-28T22:26:24Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![DouglasPLundy](https://avatars.discourse-cdn.com/v4/letter/d/ce7236/32.png) [@DouglasPLundy](https://community.cartalk.com/u/DouglasPLundy)\ **Post date:** [March 28, 2020, 10:26pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/1 "2020-03-28T22:26:24Z")
toyota celica GT, the battery has enough drain on it to die overnight, removed all fuses without any circuit showing the problem in that circuit…removed alternator leads as well, still has drain. ---
**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\ **Post date:** [March 29, 2020, 8:29pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/2 "2020-03-29T20:29:44Z")
What if you disconnect the battery? ---
**Author:** ![DouglasPLundy](https://avatars.discourse-cdn.com/v4/letter/d/ce7236/32.png) [@DouglasPLundy](https://community.cartalk.com/u/DouglasPLundy)\ **Post date:** [March 29, 2020, 8:35pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/3 "2020-03-29T20:35:17Z")
Of course if I just disconnect the battery it does not drain. But then one also disconnects the car clock the ECU the ABS and all the other components that require standby power. It’s not a good idea to cut off the battery between operation x with a car ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [March 29, 2020, 8:54pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/4 "2020-03-29T20:54:08Z")
> [@DouglasPLundy](#): > > ECU the ABS and all the other components that require standby power And ALL of those have fuses… which means you didn’t remove all the fuses. Also consider the alternator may have an internal regulator short draining the battery. > [@DouglasPLundy](#): > > It’s not a good idea to cut off the battery between operation x with a car So why do you think that? I’ll say it won’t hurt a thing to disconnect the battery. The ECU may need a couple of miles to re-learn the engine’s condition, the radio and clock will need resetting every time, but the ABS does not matter at all. ---
**Author:** ![DouglasPLundy](https://avatars.discourse-cdn.com/v4/letter/d/ce7236/32.png) [@DouglasPLundy](https://community.cartalk.com/u/DouglasPLundy)\ **Post date:** [March 29, 2020, 8:59pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/5 "2020-03-29T20:59:20Z")
I did remove all of the fuses every relay and I also disconnected the wires from the alternator. Nothing was able to stop the drain. I find there was an alarm system installed perhaps with a LoJack recovery system which cannot be disconnected for security reasons. Also an aftermarket radio which could be responsible. Heavily Amplified. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [March 29, 2020, 9:04pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/6 "2020-03-29T21:04:22Z")
> [@DouglasPLundy](#): > > I find there was an alarm system installed perhaps with a LoJack recovery system which cannot be disconnected for security reasons. Also an aftermarket radio which could be responsible. Heavily Amplified. And we have the **Tri-Fecta** of parasitic drains! The LoJack, the aftermarket radio and the subs are all **prime** candidates for drain. And ALL should be fused. If they aren’t, fuse them or the car could burn to the ground… but that would solve your drain problem! ---
**Author:** ![DouglasPLundy](https://avatars.discourse-cdn.com/v4/letter/d/ce7236/32.png) [@DouglasPLundy](https://community.cartalk.com/u/DouglasPLundy)\ **Post date:** [March 29, 2020, 9:06pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/7 "2020-03-29T21:06:27Z")
My suspicion is that the LoJack system which I would happily remove entirely it’s not fused for security reasons. So that the thief potentially would be unable to remove the fuse. I’m just researching how it might be wired in so I can disconnect. I did find some micro switches that might be part of the system. It’s definitely an Aftermarket Wiring issue. Thanks for your comments ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [March 29, 2020, 9:13pm UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/8 "2020-03-29T21:13:44Z")
> [@DouglasPLundy](#): > > it’s not fused for security reasons Bull Squat. EVERY electrical component needs to be fused, security or not. The thief can just as easily cut the wires as remove a fuse. In fact, it would be WAY quicker than searching for the fuse. Heck, you haven’t found the fuse and you’ve had lots of time to look for it. LoJack relies on the criminal not knowing it is on the car. Do you really need LoJack for a 20 year old car? ---
**Author:** ![jim45](https://avatars.discourse-cdn.com/v4/letter/j/c4cdca/32.png) [@jim45](https://community.cartalk.com/u/jim45)\ **Post date:** [March 30, 2020, 4:31am UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/10 "2020-03-30T04:31:33Z")
hi take it someplace that has a starter drain gauge to see if starter is draining it good luck jim ---
**Author:** ![DouglasPLundy](https://avatars.discourse-cdn.com/v4/letter/d/ce7236/32.png) [@DouglasPLundy](https://community.cartalk.com/u/DouglasPLundy)\ **Post date:** [March 30, 2020, 7:05am UTC](https://community.cartalk.com/t/2000-toyota-celica-fast-battery-drain/162019/11 "2020-03-30T07:05:49Z")
I found it the radio was very tricky to turn off. The owners of the car happened to be morons. I wish them well. Got it fixed.