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Why can't the Kia K4 start with one-key start?

1 Answers

MacClaire

07/30/25 3:02am

Kia K4 one-key start not responding is usually caused by a dead smart key battery, insufficient battery voltage, or not shifting to the P/S gear when parking. Below are the relevant reasons for one-key start failure: 1. Dead smart key battery: This situation is most likely due to a dead smart key battery, causing the start system to fail to detect the weak signal from the smart key. It is recommended to place the smart key on the start button and then press the button to start. 2. Insufficient battery voltage, dead battery, or damage: Failure to start may be caused by a dead battery due to leaving headlights on for a long time or the battery reaching the end of its lifespan. Generally, replace the battery according to the maintenance manual. If the battery is dead, you can use another battery to jump-start or use the universal push-start method with a few people.

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