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: Rear occupant alert (ROA) system

The advanced Rear Occupant Alert (ROA) system integrated into your vehicle is a vital driver assistance feature configured to monitor the rear passenger cabin. This sub-system actively reduces the risk of a child, infant, vulnerable passenger, or family pet being inadvertently left behind in the vehicle when the driver exits. Environmental Sensor Optimization Protocol: To ensure the underlying ultrasonic interior sensors function with maximum accuracy, make sure that all side passenger windows and the sunroof assembly are completely closed whenever the ROA framework is operational.

Kia K4 (CL4) 2025-2026 Owner's Manual: Winter driving

Severe winter weather conditions significantly increase the risk of road hazards, accelerate tire wear, and demand proactive maintenance. To ensure your Kia K4 remains reliable and safe throughout the colder months, please follow these professional recommendations for winter operation. Snowy or icy conditions Navigating through deep snow or on packed ice often requires specialized equipment, such as dedicated winter tires or appropriate tire chains, to maintain adequate grip.