2020 Mercedes GLS 450: Easy Oil Reset Guide

Keeping your 2020 Mercedes GLS 450 in tip-top shape means staying on top of regular maintenance, and that includes those all-important oil changes. But what happens after you've got that fresh oil in? Well, you need to reset the oil service indicator! Don't worry, it's not as intimidating as it sounds. This guide will walk you through the process step-by-step, making it a breeze to get your maintenance schedule back on track. So, grab your keys, and let's get started!

Why Reset the Oil Service Indicator?

You might be wondering, "Why do I even need to reset this thing?" Great question! Your Mercedes-Benz uses a sophisticated system to track your oil life. It doesn't just go by mileage; it also takes into account your driving habits, engine load, and other factors to determine when an oil change is truly needed. When you get your oil changed, the system needs to be reset so it can accurately begin monitoring the new oil's condition. If you don't reset it, your car might keep telling you that you need an oil change even after you've just had one! This could lead to unnecessary warnings, potential confusion, and even make it harder to keep track of your actual maintenance schedule. Beyond the warning lights, resetting the indicator ensures that your vehicle's computer has an accurate baseline for calculating future maintenance intervals. This is crucial for maintaining the performance and longevity of your engine. The system learns your driving style over time, adjusting its recommendations to fit your specific needs. Resetting the oil service indicator is a small step that contributes significantly to the overall health and efficiency of your GLS 450. Neglecting this simple procedure can lead to inaccurate service reminders, potentially causing you to miss important maintenance milestones or, conversely, prompting unnecessary service visits. It's all about keeping your car's internal clock synchronized with reality. Moreover, an accurate service indicator can also play a role in maintaining your vehicle's resale value. A well-documented and consistently maintained service history is a significant selling point. By ensuring your oil service indicator is properly reset after each oil change, you are contributing to a clear and reliable record of your car's upkeep. So, make it a habit – reset that indicator and keep your GLS 450 running smoothly for years to come. It’s a simple task that makes a big difference in the long run, ensuring your luxury SUV continues to deliver the performance and reliability you expect.

Step-by-Step Guide to Resetting Your 2020 GLS 450 Oil Service Indicator

Alright, guys, let's get down to the nitty-gritty. Here's how to reset that oil service indicator like a pro. Keep in mind that Mercedes-Benz systems can be a tad particular, so follow these steps closely:

Get in the Driver's Seat: Make sure your GLS 450 is parked safely on a level surface and turn off the engine. You'll need to have the key in the ignition, but don't start the engine.
Turn the Key to Position 1: Insert the key into the ignition and turn it to position 1. This is the position just before the engine starts. You should see the dashboard lights come on.
Use the Steering Wheel Controls: This is where things get a little tricky, but don't worry, you've got this! Use the left-hand side controls on your steering wheel to navigate the menus on the instrument cluster display. You're looking for the "Trip" or "Mileage" display.
Navigate to the Service Menu: Once you're on the "Trip" or "Mileage" display, press the "Home" button (it looks like a little house) on the steering wheel. This should bring up the main menu. Then, use the arrow keys to scroll through the options until you find "Service" or "Assyst Plus." The exact wording might vary slightly depending on your car's software version.
Confirm Service: Select "Service" or "Assyst Plus" by pressing the "OK" button on the steering wheel. This will take you to a submenu with various service options.
Scroll to "Service Reset" or "Oil Reset": Use the arrow keys again to scroll through the submenu until you find an option that says something like "Service Reset," "Oil Reset," or "Full Service."
Confirm the Reset: Select the "Service Reset" or "Oil Reset" option and press the "OK" button. The system will likely ask you to confirm that you want to reset the oil service indicator. Confirm your choice by selecting "Yes" or "Confirm" and pressing "OK" again.
Turn off the Ignition: Once the reset is complete, the display should show a confirmation message. Turn the ignition off completely and remove the key.
Start the Engine: Now, start the engine to verify that the oil service indicator has been successfully reset. The warning message should be gone, and the service interval display should show the new interval. If it doesn't reset properly, don't panic! Just repeat the steps carefully, making sure you're in the correct menus and confirming each step. Sometimes it takes a couple of tries to get it right. Remember to double-check that you are in Position 1 with the key and that you are using the steering wheel controls correctly. Patience is key!

By following these steps meticulously, you'll be able to reset the oil service indicator on your 2020 Mercedes GLS 450 with confidence. Remember, this is a crucial part of maintaining your vehicle's health and ensuring accurate service reminders. So, take your time, follow the instructions, and enjoy the peace of mind knowing that your GLS 450 is properly calibrated and ready for the road ahead. And if you ever get stuck, don't hesitate to consult your owner's manual or reach out to your local Mercedes-Benz dealership for assistance. They're always happy to help!

Troubleshooting Common Issues

Even with the clearest instructions, sometimes things just don't go as planned. If you're running into snags while trying to reset your oil service indicator, don't sweat it. Here are a few common issues and how to tackle them:

Can't Find the "Service" Menu: First, double-check that you are in Position 1 with the key in the ignition (but the engine off). If you're in the right position and still can't find the "Service" menu, try navigating through the different display options using the steering wheel controls. Sometimes the menu layout can vary slightly depending on the software version of your car. Also, make sure you are starting from the "Trip" or "Mileage" display before pressing the "Home" button.
Reset Not Confirmed: If you go through all the steps and the system doesn't confirm the reset, try repeating the process. Make sure you are confirming each step by pressing the "OK" button firmly. Sometimes a weak button press can cause the system to miss the confirmation. If it still doesn't work, try turning the ignition off completely, waiting a few minutes, and then trying again.
Warning Message Still Appears: After resetting the indicator, if the warning message still pops up, it could indicate a different issue. It's possible that there's another service item that needs attention, or that the oil level sensor is malfunctioning. In this case, it's best to consult with a qualified Mercedes-Benz technician to diagnose the problem.
Low Battery: A low car battery can sometimes interfere with the reset process. If you've been having trouble starting your car lately, or if the battery is more than a few years old, it might be worth checking the battery voltage. A weak battery can cause all sorts of strange electrical issues, including preventing the oil service indicator from resetting properly.
Software Glitches: Occasionally, software glitches can occur that prevent the reset from working. In this case, the dealership may need to perform a software update to resolve the issue. This is a less common problem, but it's worth considering if you've tried everything else.

Remember, patience is key when troubleshooting these issues. Take your time, double-check each step, and don't be afraid to consult your owner's manual or seek professional help if needed. Keeping your GLS 450 properly maintained is essential for its longevity and performance, so it's worth the effort to resolve any issues that arise.

When to Seek Professional Help

While resetting your oil service indicator is usually a straightforward process, there are times when it's best to call in the experts. If you've tried all the troubleshooting steps and you're still unable to reset the indicator, or if you notice any other warning lights or unusual symptoms, it's time to seek professional help from a qualified Mercedes-Benz technician. They have the specialized tools and knowledge to diagnose and resolve any underlying issues that may be preventing the reset from working properly.

Here are some specific situations where professional help is recommended:

Persistent Warning Lights: If the oil service warning light is accompanied by other warning lights, such as the check engine light or the transmission warning light, it's important to have your car diagnosed by a professional. These lights could indicate a more serious problem that needs immediate attention.
Unusual Engine Noises: If you notice any unusual noises coming from the engine, such as knocking, ticking, or rattling, it's best to have your car inspected by a technician. These noises could indicate engine damage or other mechanical problems.
Loss of Engine Performance: If you experience a sudden loss of engine power, or if your car is not accelerating as quickly as it used to, it's important to have it checked by a professional. This could be a sign of a serious engine problem.
Suspect a Sensor Malfunction: If you suspect that a sensor is malfunctioning, such as the oil level sensor or the oil pressure sensor, it's best to have it diagnosed by a technician. They can use specialized tools to test the sensors and determine if they need to be replaced.
Unsure About the Procedure: If you're simply not comfortable performing the reset procedure yourself, or if you're unsure about any of the steps, it's always best to err on the side of caution and seek professional help. A qualified technician can perform the reset for you and ensure that everything is working properly.

Remember, your Mercedes-Benz GLS 450 is a sophisticated machine, and it's important to take care of it properly. By seeking professional help when needed, you can ensure that your car stays in top condition and continues to provide you with years of reliable service. Don't hesitate to reach out to your local Mercedes-Benz dealership or a trusted independent mechanic for assistance. They're always happy to help you keep your car running smoothly.

Conclusion

So there you have it! Resetting the oil service indicator on your 2020 Mercedes GLS 450 is a task you can definitely handle with a little know-how and patience. By following this guide, you'll be able to keep your maintenance schedule accurate and your car running smoothly. Remember to pay attention to any warning signs and don't hesitate to seek professional help when needed. Keep your GLS 450 in top shape, and it will continue to provide you with a luxurious and reliable driving experience for years to come!