Kia K4: Opening and Closing / Fuel filler door

Kia K4 (CL4) 2025-2026 Owner's Manual / Opening and Closing / Fuel filler door

Contents:

The Kia K4 fuel filler door is designed to be opened and closed manually from outside the vehicle, ensuring reliable access to the fuel tank.

Opening the fuel filler door

Ensure the engine is turned completely OFF.

Pull up the fuel filler door release mechanism to unlatch the exterior door panel.

Mechanism for the fuel filler door release located on the driver door panel of a Kia K4

Pull the fuel filler door outward by its edge to fully open it.

Opening the exterior fuel filler door to access the gas cap on a Kia K4

To remove the fuel tank cap (1), rotate it counterclockwise. A brief hissing noise is normal as the tank pressure equalizes.
Safely place the cap in the designated holder on the inside of the fuel filler door.

NOTE

Before refueling your Kia K4, always verify the correct fuel type. Putting diesel or ethanol into a gasoline-powered vehicle will cause catastrophic failure to the fuel injection system and engine components.

TIP

If the fuel filler door on your Kia K4 is frozen shut due to ice, tap lightly or press firmly on the edge of the door to break the ice seal. Do not use excessive force or pry the door open. If necessary, use an approved de-icing spray, or move the vehicle to a heated environment until the ice melts naturally.

Closing the fuel filler door ➤

Wide sunroof:

Closing the fuel filler door

Other information:

Kia K4 (CL4) 2025-2026 Owner's Manual: Seat belt restraint system

To ensure maximum protection, occupants must wear their seat belts whenever the Kia K4 is in motion: The shoulder belt should be adjusted to rest midway over the shoulder and across the collarbone, never against the neck. For safety reasons, never allow children to ride in the front passenger seat. Please refer to the "Child Restraint System (CRS)" section of your Kia K4 owner's manual for detailed guidance on appropriate child seating.

Kia K4 (CL4) 2025-2026 Owner's Manual: Wide sunroof:

If your specific vehicle package is configured with the optional premium wide sunroof assembly, you can effortlessly slide open or tilt the glass panel using the multi-stage electronic sunroof switch located conveniently on the overhead console panel. To protect the battery state of charge, you can only actuate the panoramic or wide sunroof tracking system when the ENGINE START/STOP button is placed in the active ON or START power mode positions.