# 2015 Kia Optima trunk pops open

**URL:** <https://community.cartalk.com/t/2015-kia-optima-trunk-pops-open/118045>\
**Category:** Maintenance/Repairs\
**Tags:** optima, kia\
**Created:** [May 25, 2018, 12:28pm UTC](https://community.cartalk.com/t/2015-kia-optima-trunk-pops-open/118045 "2018-05-25T12:28:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ShannonMorse](https://avatars.discourse-cdn.com/v4/letter/s/58956e/32.png) [@ShannonMorse](https://community.cartalk.com/u/ShannonMorse)\
**Post date:** [May 25, 2018, 12:28pm UTC](https://community.cartalk.com/t/2015-kia-optima-trunk-pops-open/118045/1 "2018-05-25T12:28:02Z")

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how do you fix the trunk opening up on it’s own after being wet and then dry. Only time it doesn’t open is when it’s locked. Hard to drive… please help!

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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:** [May 25, 2018, 8:49pm UTC](https://community.cartalk.com/t/2015-kia-optima-trunk-pops-open/118045/2 "2018-05-25T20:49:40Z")

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Huh???

> [@ShannonMorse](#):
>
> trunk opening up on it’s own after being wet and then dry

What to you mean by that? Does the trunk pop open on its own after a rain-shower once it becomes dry? I’d say water is getting in and shorting the remote lock mechanism, cause it to trigger the remote truck actuator.

> [@ShannonMorse](#):
>
> Only time it doesn’t open is when it’s locked.

Soo… it is a trunk, with a remote opening feature. Are you saying it also has a secondary lock that defeats the remote opening feature? Is it mechanical - on the key lock itself? Or a switch you throw to “lock” it?

Need a little help here…

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**Author:** ![Lew-33](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/lew-33/32/20840_2.png) [@Lew-33](https://community.cartalk.com/u/Lew-33)\
**Post date:** [May 15, 2020, 9:22am UTC](https://community.cartalk.com/t/2015-kia-optima-trunk-pops-open/118045/3 "2020-05-15T09:22:03Z")

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my 2015 kia optima also has a randomly opening trunk issue. it just pps open whenever. its been in the shop for a month now without any fix. they replaced the latch and door switch. nothing worked yet.

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**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 15, 2020, 4:28pm UTC](https://community.cartalk.com/t/2015-kia-optima-trunk-pops-open/118045/4 "2020-05-15T16:28:08Z")

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The Smart Trunk on your KIA isn’t smart anymore.

The BCM controls the Smart Trunk.

> **[5 Common Symptoms of a Failing Body Control Module (BCM) - Module Experts](https://moduleexperts.com/5-common-symptoms-failing-body-control-module-bcm/)**
>
> If your BCM malfunctions, you will notice a negative effect on the operation of your vehicle. Watch out for these symptoms.

Tester