If you’ve just had an oil change and noticed that your maintenance required light is still on, you’re not alone. Many car owners encounter this issue and wonder why the light persists even after performing the necessary maintenance. While the oil change might seem like a simple fix, the maintenance light could indicate other underlying problems. This article will explore common reasons why your maintenance required light remains on after an oil change and provide solutions to resolve the issue.
Why Is My Maintenance Required Light On After Oil Change?
1. Resetting the Maintenance Light
The most common reason for the maintenance required light staying on after an oil change is the failure to reset it. Many vehicles have a reset procedure that needs to be manually completed. After the oil change, the car’s computer system still thinks that a maintenance service is required unless this reset is done. Here’s how to do it:
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Turn off the car.
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Press and hold the trip meter button (or similar button) on your dashboard.
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Turn the ignition to the “On” position without starting the engine.
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Hold the trip meter button until the light blinks and turns off.
If this doesn’t work, check your vehicle’s owner manual for specific instructions based on the make and model.
2. Faulty Oil Change Sensor
Another reason why the maintenance light stays on after an oil change could be a malfunctioning oil change sensor. These sensors are designed to track the health of the oil, and if they become faulty, they may continue to signal that a change is needed, even if you’ve just completed one. Replacing the faulty sensor should resolve this issue.
3. Not Changing the Oil Filter
Sometimes, the oil filter may not have been replaced during the oil change. A clogged or dirty oil filter could affect the performance of your engine and might cause the maintenance light to remain on. Double-check with your mechanic to ensure the oil filter was properly replaced.
4. Engine Oil Quality or Level
If the oil was changed, but the oil level is too low or the oil quality is poor, the maintenance light could stay on. This could happen if the mechanic didn’t fill the engine with the correct amount of oil or used a low-quality oil. Ensure that the oil level is properly checked and topped off, and verify that the right oil was used for your vehicle.
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Check the oil level: Use the dipstick to ensure the oil level is adequate.
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Check oil quality: If the oil appears too dark or gritty, it may need to be replaced again.
5. Other Maintenance Needs
The maintenance required light may be signaling that there’s another maintenance need, even though the oil change has been performed. Some vehicles have a more comprehensive system that tracks other factors, such as air filters, spark plugs, or fluid levels. If any of these components need attention, the light may remain on.
Resetting the Maintenance Light After an Oil Change
After an oil change, if the maintenance required light stays on, the first step is to ensure that it has been properly reset. This can typically be done through a specific sequence of button presses or via the car’s infotainment system. Every vehicle is different, so make sure to consult your owner’s manual.
Why Resetting is Important
Resetting the maintenance light tells the car’s system that the oil change has been completed, and the car is good to go for the next scheduled maintenance.
Common Resetting Procedures by Vehicle Make
Some common makes and models have unique steps for resetting the maintenance light. For example, Toyota and Honda vehicles often require the ignition to be turned on without starting the engine while pressing certain buttons. Be sure to refer to your vehicle’s manual for precise instructions.
Why the Maintenance Light May Stay On Despite an Oil Change
There are a number of reasons why the maintenance required light could stay illuminated even after you’ve changed your oil:
Faulty Oil Change Sensor
The sensor that tracks oil changes can sometimes malfunction, especially in older vehicles. When this happens, it may send a false signal to the car’s system, telling it that a change is still required. Replacing the sensor should resolve the issue.
The Oil Filter
Failing to replace the oil filter during an oil change is another common reason why the maintenance light may stay on. A clogged or dirty filter could affect engine performance and trigger the maintenance light to stay on.
Other Maintenance Indicators
In some cases, the maintenance light is part of a larger system that tracks various components of the vehicle, including filters, fluid levels, and other wear-and-tear parts. If something else is due for replacement or maintenance, the light may remain on.
FAQs
How do I reset my maintenance required light?
Follow the instructions in your vehicle’s manual, which usually involves holding down a button while turning on the ignition.
Can a faulty oil change sensor cause the maintenance light to stay on?
Yes, a malfunctioning oil change sensor can continue signaling the need for an oil change, even after it’s been done.
Why is it important to replace the oil filter during an oil change?
Replacing the oil filter ensures the engine stays clean and properly lubricated, preventing issues with performance.
Can low oil levels cause the maintenance light to stay on?
Yes, if the oil level is low after an oil change, the maintenance light may remain illuminated.
Does the maintenance light indicate other issues besides oil changes?
Sometimes the light indicates other maintenance tasks are required, such as replacing air filters or checking fluid levels.
Conclusion
If your maintenance required light is on after an oil change, it’s often due to simple factors such as a failure to reset the light, an oil sensor malfunction, or even the oil filter needing replacement. While it can be frustrating, the problem is usually easy to diagnose and fix. Always ensure that your oil change is complete, and take the time to reset the light to avoid confusion. If the light persists, consult with your mechanic to rule out any more serious issues.
