Kia Sedona won't stay started due to burnt fuse in junction block on Kia Sedona

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Kia Sedona owners report experiencing issues with their vehicle not staying started due to a burnt fuse in the junction block. These problems may stem from faulty cables or connections that prevent power from flowing through the electrical system. Additionally, some owners have encountered power relay issues, where temporarily banging on the fuse box appears to resolve the starting problem. If the engine fails to crank or the starter does not engage, it may indicate issues with the battery cables. A weak or dead 12v battery is often a common reason for the engine not cranking or cranking slowly, making battery condition checks essential. Owners are also advised to inspect the IG2 40 amp fuse in the underhood fuse panel for power supply issues to the ignition switch. Furthermore, ensuring the engine cooling fan operates correctly when the engine is at temperature can help prevent overheating that might lead to the engine cutting off. Addressing these concerns promptly is crucial for effective diagnosis and resolution.

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