Mechanic Wiki: How to Reset Kia K4 Oil Light with LAUNCH X431 (2024+ Models)

Step-by-step guide to reset the oil service light on a 2024+ Kia K4 using a LAUNCH X431 scanner. Includes standard reset, troubleshooting for grayed-out options, manual override, and FAQs.

Last Updated: June 28, 2026

Quick Answer: How to Reset Kia K4 Oil Light

To reset the oil service light on a 2024+ Kia K4 using a LAUNCH X431 scanner, connect the tool to the OBD2 port, select Diagnosis > Kia > K4, then navigate to Oil Reset Service (or SRI Reset). Follow the on-screen prompts – the process takes about five minutes. If the option is grayed out, perform a DSL/ECU Coding reset or use the steering wheel manual override (see troubleshooting below).

Introduction

The Kia K4 is the brand’s newest compact sedan, replacing the Forte in many markets. It brings sharp styling, modern tech, and – like all newer Kias – an intelligent oil life monitoring system that tracks engine hours and driving conditions rather than just mileage. When the "Oil Change Required" message pops up on the dash, it’s not a suggestion; it’s the ECU telling you the service interval has been reached.

Why use a LAUNCH X431? Because generic OBD2 code readers can’t handle Kia’s proprietary SRI (Service Reminder Interval) system. The LAUNCH X431 series – especially the PAD VII, V, and PRO3 – offers full bi-directional control, supports CAN FD protocol for 2024+ models, and includes dedicated service functions that make the reset fast and reliable. I’ve personally used these tools on dozens of Kia models, and the K4 reset is straightforward once you know the right menu path.

Prerequisites & Safety

Before you start, check these three things – they’ll save you from a failed reset or a dead ECU.

Vehicle state: Key in the ACC/ON position (engine off). Do not start the engine.
Tool readiness: Your LAUNCH X431 must have the latest Kia software installed. Connect to Wi-Fi and run a full update before attempting the reset. Older software may not recognize the 2024+ K4.
Battery voltage: Confirm the battery is at 12.5V or higher. Low voltage can corrupt the ECU during a reset. If your battery is weak, hook up a charger.

Also, park the car in a well-lit area and have the OBD2 port accessible – it’s under the driver’s side dashboard, typically near the hood release lever.

Step-by-Step: Standard Reset via Special Functions

Let’s walk through the normal procedure. This works for 90% of Kia K4 units.

Step 1: Connection & Initial Setup

Plug the LAUNCH X431 cable into the OBD2 port. The scanner will power on automatically. From the home screen, tap “Diagnosis.”

Step 2: Vehicle Identification

Select “Kia” from the brand list. The scanner will show a list of models – choose “K4” or “Forte” depending on your market region. If the tool automatically detects the VIN, confirm it. If not, manually enter the VIN (this is common for CAN FD vehicles where automatic detection may fail).

Step 3: Navigate to Oil Reset Service

Once the system identification is complete, you’ll land on the main diagnostic menu. Scroll horizontally or down to find the “Service” or “Maintenance” tab. Inside, look for “Oil Reset Service” or “SRI (Service Reminder Interval) Reset.” Tap it.

Step 4: Execute the Reset

The scanner will communicate with the engine ECU and display current oil life data. You will see a button labeled “Reset Oil Service” or “Initiate SRI Reset.” Tap it. The tool takes 2–5 seconds to send the command, then shows “Service Reset Successful.”

Verify: Turn the ignition off, wait 30 seconds, then turn it back on. The oil light should be gone. If it’s still lit, repeat the process or check the troubleshooting section below.

Pro tip: After the reset, I always do a quick “Full Trip Reset” to clear the distance-to-service counter. In the LAUNCH menu, look for “Trip Reset” under the same service section.

Troubleshooting: If the LAUNCH Tool Can't Find "Oil Reset Service"

Sometimes the straightforward path doesn’t work. Here are the most common hiccups and how to fix them.

Problem A: "Oil Reset" Option Grayed Out

This happened to me on a 2025 K4 GT-Line. The option was visible but unclickable.

Cause: The K4’s ECU uses a specific reset algorithm tied to the engine type. The general “Oil Reset” function is locked until you perform a DSL (Diesel/Gasoline) reset.

Solution:

Exit the Oil Reset menu and go to “System Diagnosis.”
Select “Engine Control (ECM)” or “PCM.”
Look for a submenu called “Coding/Configuration.”
Inside, find “DSL Reset” – don’t worry if your K4 has a gasoline engine; this label applies to both.
Tap “Reset After Oil Service” and change the value from “No” to “Yes” or “Active.”
Confirm the change. The tool will write the new value to the ECU and exit.

Now go back to the Oil Reset Service menu – it should be fully active.

Problem B: "CAN FD Not Recognized" Error

The 2024+ K4 uses CAN FD (Flexible Data-rate) protocol. Older LAUNCH units or outdated software may not support it.

Solution: Update your X431 via Wi-Fi. If the update doesn’t fix it, try “Manual Input” and search by model year (2024 or 2025) instead of letting the tool auto-detect. This forces the scanner to use the correct protocol.

Problem C: Manual Override (Steering Wheel Buttons)

If your LAUNCH tool is unavailable or the reset still fails, you can reset the oil light manually:

Turn the ignition ON (engine off).
Press and hold the “Mode” button on the steering wheel for 5 seconds.
While holding “Mode,” press the “OK” button three times.
A menu appears on the dashboard screen – use the steering wheel controls to highlight “Oil Service Reset” and select “Yes.”

This method works on most 2024+ Kia models with a digital cluster.

What Happens If You Ignore the Reset?

Leaving the oil light on isn’t just an annoyance. Here’s what you risk:

Persistent warning: The “Oil Change Required” message stays on the dash and cannot be dismissed by normal driving.
ECU trouble codes: The vehicle may log a “Service Due” DTC (typically a manufacturer-specific code) that can interfere with future diagnostics.
Warranty implications: Kia’s dealer network may flag missed services if the reset isn’t recorded properly. During warranty claims, they can check the ECU’s service history.

Always reset the oil light immediately after an oil change to keep your maintenance record clean.

K4 Model Specifics vs Other Kia Models

Don’t assume the K4 reset works like older Kias – it has quirks.

K4 vs K5: The K4 (2024+) requires CAN FD support, while the K5 (2020–2023) uses standard CAN. If you’re switching between these cars, update your LAUNCH tool beforehand.
K4 vs Forte: In markets where the K4 replaces the Forte, the reset logic is identical. However, the menu language may differ – e.g., “Forte” might appear instead of “K4” in the US market. Just select the name that matches your vehicle’s badging.

Frequently Asked Questions (FAQ)

Does the LAUNCH X431 require internet to reset the K4?

Yes, for the initial software download and updates. Once installed, the scanner works offline for standard reset procedures. If you update regularly, you’ll rarely encounter protocol errors.

Can I use a generic OBD2 scanner for a K4 oil reset?

No. The K4 (2024+) uses Kia’s proprietary SRI system. Only bi-directional scan tools like the LAUNCH X431, Autel, or dealer-level equipment can reset the service reminder.

The oil light came back on after 10 miles. What went wrong?

You likely used the “Read Oil Life” function without actually performing the reset. Go back into the menu and select “Reset After Service” – not just “Read.” Some users tap the wrong button and think the reset is done.

What is the oil change interval for a Kia K4?

Under normal conditions, Kia recommends 7,500 miles (12,000 km) or 12 months, whichever comes first. For severe driving (short trips, extreme temperatures, towing), change at 3,000–5,000 miles (5,000–8,000 km). Always confirm the reset on your dashboard after service.

My LAUNCH X431 says "Service Not Supported." What do I do?

First, update the X431 software to the latest version (look for a 2024+ patch). If the issue persists, perform the manual reset via steering wheel buttons (see Problem C above). If neither works, contact LAUNCH support – your tool may need a firmware update.

Conclusion & Next Steps

Resetting the oil service light on a Kia K4 with a LAUNCH X431 is a quick task once you know the correct menu path. The key is having the latest software and, if the standard reset fails, knowing the DSL/Coding workaround or the steering wheel manual method.

Pro tip: After every oil change, perform a Full Trip Reset to clear the distance-to-service counter. This ensures your next service reminder will be accurate.

If you run into an error code like “Invalid Security Key,” check the LAUNCH X431 user manual or reach out to technical support. For more tips on using your LAUNCH tool, check out our guide on [link to related guide on using LAUNCH X431 for other Kia service resets].

Need the right equipment? For inquiries and purchases, visit [link to internal equipment page].

About the Author: Erwin Salarda is an Automotive Service Equipment Technician based in the Philippines, specializing in computerized automotive diagnostic equipment such as OBD scanners and wheel alignment systems. Since 2012, he has been actively providing technical support, equipment installation, troubleshooting, after-sales service, and hands-on training for automotive service equipment used by workshops and automotive professionals.

He has received specialized training from international suppliers and manufacturers, including Launch X431 in Shenzhen, China, Lawrence Engineering Company in Guangzhou, China, and 3Excel Wheel Alignment Company in Shenzhen, China. Through these trainings, he developed advanced expertise in automotive diagnostics, calibration, wheel alignment systems, and computerized automotive service technologies.

Erwin Salarda provides professional after-sales support and technical training for automotive diagnostic and wheel alignment equipment, helping clients maximize the performance and proper use of their tools and systems. His experience covers equipment setup, software updates, calibration procedures, troubleshooting, and operational guidance for automotive workshops and service centers.

With more than a decade of experience in the automotive equipment industry, Erwin Salarda continues to support automotive businesses by delivering reliable technical expertise and practical training solutions.

For inquiries and equipment purchases, please visit https://carlifterph.com/