Kia K4: Lighting / Light switch settings
Contents:
| Setting | Result |
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Front position lamp, taillights, and license plate lamp are ON. TIP The Kia K4 must be in the ON position to turn on these headlights. |
 
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Low beam headlight, taillight, and license plate lamp are ON. |
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Taillights and headlights turn on or off automatically depending on the amount of ambient light. |
NOTE
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For optimal AUTO light performance in your Kia K4, please ensure no objects are placed over the light sensor (1) located on the dashboard instrument panel.
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Avoid using window cleaners directly on the sensor, as a chemical film can interfere with the light detection accuracy.
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If your Kia K4 has a dark window tint or metallic windshield coating, the AUTO light system may experience reduced performance.
Turn and lane change signal operation
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To ensure proper operation of the turn signals, your Kia K4 must be in the ON position. The signaling system is essential for communicating your driving intentions to other road users.
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To engage a full turn signal, move the lever firmly up or down (position 1).
The green arrow indicators on the Kia K4 instrument cluster will blink, confirming which signal is currently active. These signals are designed to self-cancel once your turn is complete. Should an indicator continue to flash after straightening the steering wheel, simply move the lever manually back to the OFF position.
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To signal a lane change, gently move the turn signal lever slightly and hold it in place (position 2).
The lever will automatically return to the neutral OFF position the moment you release it, providing a convenient way to signal short maneuvers in your Kia K4.
If an indicator on the dashboard remains illuminated without flashing, or if it blinks at an irregular rate, this often signifies that one of the external turn signal bulbs may be burned out and requires immediate replacement to maintain safety.
One-touch lane change function
For high-speed driving or highway merging, the Kia K4 offers a one-touch lane change function. By lightly tapping the turn signal lever and releasing it, the signal will automatically blink 3, 5, or 7 times, depending on your customized settings.
You can manage this feature by navigating the Kia K4 infotainment system: select Settings > Vehicle > Lights > One Touch Turn Signal. Here, you can toggle the function on or off and set the preferred blink cycle frequency.
NOTE
If the signal indicator flashes at an abnormally quick or slow rate, it indicates a potential electrical circuit fault or a failed bulb. Inspect your Kia K4 exterior lights periodically to ensure all signals are functioning correctly.
Front fog light operation
The front fog lights on your Kia K4 are precision-engineered to enhance illumination and visibility during inclement weather conditions, such as dense fog, heavy rain, or falling snow.
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- To activate, ensure your headlamps are turned on, then rotate the dedicated fog light switch (1) to the ON position.
- To turn off the fog lights, rotate the switch (1) back to the OFF position.
NOTE
Fog lights place an increased demand on the electrical system of the Kia K4. For energy efficiency and to prevent glare for other drivers, please utilize these lights only when visibility is significantly reduced.
Other information:
Kia K4 (CL4) 2025-2026 Owner's Manual: How to use the Digital Key 2 (Smartphone)
Proximity and Smartphone Touch Control Operating your vehicle with the cutting-edge Kia Digital Key 2 framework brings maximum flexibility to your daily routine. You can lock and unlock the entry doors seamlessly without even needing to manually launch or activate the Kia Access App on your mobile device. By simply bringing your compatible smartphone into close proximity or tapping it against the integrated sensor plate on the exterior handle, the vehicle executes your command instantly.These advanced assistance functions in the Kia K4 may experience abnormal operation or unexpected deactivation under certain circumstances, including: The ambient temperature surrounding the front or rear-side radar sensors is outside of the safe operating range (too high or too low). You have installed a trailer, aftermarket rack, or carrier in close proximity to the rear corner radar sensors, potentially blocking their field of view.
