Main fuse
If the main fuse is blown, it must be removed as follows:
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Turn the ENGINE START/STOP button to the OFF position and all other switches off.
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Disconnect the negative battery cable.
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Remove the nuts shown in the picture above.
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Replace the fuse with a new one of the same rating.
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Reverse these steps to reinstall the multi fuse.
The electronic system may not function correctly even when the engine compartment and internal fuse box's individual fuses are not disconnected. In such case the cause of the problem may be disconnection of the main fuse (BFT type), which is located inside the positive battery terminal (+) cap.
Since the main fuse is designed more intricately than other parts, have the vehicle checked by an authorized Kia dealer.
Do not disassemble or assemble the multi fuse when it is secured with nuts and bolts. Incorrect or partial assembly torque may cause a fire. Have the vehicle checked by an authorized Kia dealer.