Resetting the power trunk
In some circumstances resetting the power trunk operation may need to be performed. Some instances where resetting the power trunk may be required include:
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When the 12-volt battery is recharged
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When the 12-volt battery is reinstalled after removal or replacement
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When the related fuse is reinstalled after removal or replacement
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With the engine off or running, put the gear in P (Park).
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While Pressing the power trunk close inner button, press the power trunk open outer button for more than 3 seconds. A chime will sound.
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Slowly close the trunk manually.
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Press the power trunk open outer button. The trunk will open with a chime sound.
Wait until the trunk fully opens to complete resetting. If the trunk stops before it is fully open, resetting cannot be completed.

If the power trunk does not operate properly after the above procedure, have the system inspected by an authorized Kia dealer/service partner.