# 2014 Toyota Sienna - Battery drain overnight **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** batteries, toyota\ **Created:** [March 18, 2024, 7:55pm UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556 "2024-03-18T19:55:22Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Buzz20](https://avatars.discourse-cdn.com/v4/letter/b/f17d59/32.png) [@Buzz20](https://community.cartalk.com/u/Buzz20)\ **Post date:** [March 18, 2024, 7:55pm UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/1 "2024-03-18T19:55:22Z")
battery discharges over night ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [March 18, 2024, 8:40pm UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/2 "2024-03-18T20:40:22Z")
Ask your shop to measure the parasitic current draw on the battery. If you’ll post the number here (in mA units), I expect you’ll get some more ideas. Good idea for the shop to perform a battery/alternator test. Things an owner could check during the overnight. - Brake lights off. - Interior lights , including “hidden” lights, such as the glove compartment, engine compartment, cargo area. - Dashboard lights off. If the “door open” dashboard light remains lit, suspect a problem with the door switch, usually in the pillar area of the door’s latch mechanism. The driver’s door is usually the first door switch to fail. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [March 20, 2024, 1:42am UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/3 "2024-03-20T01:42:03Z")
Or a battery jus5 too old and frail to hold a charge. I had a one year old battery in a car that sat most of the time. Had a charger on it for 24 hours and not enough charge to start the car. ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [March 20, 2024, 1:25pm UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/4 "2024-03-20T13:25:47Z")
When was the last time the battery was replaced? Batteries should last at least 3 years in a hot climate. I live in Maryland and get 3 years from my batteries. Your Sienna’s battery is under the hood so engine heat plus general environment heat reduces battery life the most. You can get your battery tested at a parts store. I get mine tested at a local Advance Auto while the battery is still in the car and they always provided an honest assessment. Any store like Advance should have a tester too. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [March 20, 2024, 9:24pm UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/5 "2024-03-20T21:24:16Z")
> [@bing](#): > > I had a one year old battery in a car that sat most of the time. Had a charger on it for 24 hours and not enough charge to start the car. Just a heads-up. I’ve had pretty good luck rejuvenating a fairly new but very discharged battery by just keep trying. Recharge on low 2A rate overnight. Wait a day, recharge overnight 2A again, etc. Sometimes it takes 3 or 4 cycles, but a new-ish battery will usually begin to take a charge. This won’t work if battery is old & heat damaged. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [March 21, 2024, 1:44am UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/6 "2024-03-21T01:44:11Z")
Didn’t have another day. Car was sold for $50. Got a Walmart replacement and filled the tank. Can’t mention the ancestry of the buyer in need or I’ll get flagged. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [March 21, 2024, 1:54am UTC](https://community.cartalk.com/t/2014-toyota-sienna-battery-drain-overnight/194556/7 "2024-03-21T01:54:27Z")
> [@bing](#): > > Can’t mention the ancestry of the buyer in need or I’ll get flagged. If you feel that information will help Buzz20 recharge the battery in the Sienna, send a private message.