# 2001 Lexus LX 470 - Battery issues after deep water

**URL:** <https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609>\
**Category:** Maintenance/Repairs\
**Tags:** lexus\
**Created:** [July 17, 2019, 6:24pm UTC](https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609 "2019-07-17T18:24:24Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Bryan23](https://avatars.discourse-cdn.com/v4/letter/b/8e7dd6/32.png) [@Bryan23](https://community.cartalk.com/u/Bryan23)\
**Post date:** [July 17, 2019, 6:24pm UTC](https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609/1 "2019-07-17T18:24:24Z")

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After traveling in deep water it ran and restarted. Next day battery was dead, jumped off and started up, charged the battery and battery tested good. The next morning it started and ran fine and that evening the battery was down again.

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**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:** [July 17, 2019, 7:11pm UTC](https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609/2 "2019-07-17T19:11:24Z")

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The alternator is mounted low on the right side of the engine, sounds like it didn’t survive the bath.

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**Author:** ![Bryan23](https://avatars.discourse-cdn.com/v4/letter/b/8e7dd6/32.png) [@Bryan23](https://community.cartalk.com/u/Bryan23)\
**Post date:** [July 17, 2019, 7:24pm UTC](https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609/3 "2019-07-17T19:24:28Z")

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the alternator putts out 14.7 volts.

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**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:** [July 17, 2019, 11:09pm UTC](https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609/4 "2019-07-17T23:09:00Z")

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Then something else has shorted out. You need to run a parasitic draw test.

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [July 18, 2019, 11:13am UTC](https://community.cartalk.com/t/2001-lexus-lx-470-battery-issues-after-deep-water/144609/5 "2019-07-18T11:13:54Z")

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Check for a popped fusible link between the alternator and battery.