Subaru Oil Light: Causes and Fixes

Have you ever been behind the wheel of your Subaru when suddenly the oil light starts to glow on your dashboard? If so, you’re not alone. 

In this article, I’ll explain why this warning light might illuminate, explore potential solutions, and equip you with the knowledge to keep your Subaru engine running smoothly. 

Let’s get started!

What Does It Mean When the Oil Light Comes on Subaru?

Oil Pressure Warning Light

If this light comes on while the engine is running, it indicates low engine oil pressure or a problem with the lubrication system.

When you see this light while driving or if it doesn’t turn off after starting the engine, you should:

• Safely pull over and stop the engine.
• Contact your nearest SUBARU dealer immediately. Do not continue driving as low oil pressure can lead to engine damage.

Engine Low Oil Level Warning Indicator

This indicator appears when the engine oil level drops to the lower limit.

If you see this warning indicator, you should:

• Check the engine oil level on a level surface. If the oil level is below the normal range, add engine oil to bring it within the recommended level.
• After adding the engine oil, let the engine warm up, and then restart.
• Confirm that the warning indicator turns off after the engine has started. If the warning indicator remains lit even after adding oil, have your vehicle checked by a Subaru dealer.

Learn More: AT Oil Temperature Subaru: 2 Common Causes and Fixes

Why Is My Oil Light On But My Oil Level Is Fine?

Common reasons for this issue include:

Faulty Sensors

The most common reason for this issue is a malfunctioning oil level or oil pressure sensor. These sensors can wear out or become less accurate over time. For example, a faulty sensor can give incorrect readings, causing the low oil level light to come on even when the oil level is adequate. In such cases, the sensor may need to be replaced.

Oil Viscosity

The oil level may be correct, but the oil’s viscosity might not be suitable for your engine’s operating conditions. Extremely thick or thin oil can affect the sensor readings and trigger the warning light. Ensure you use the correct grade and viscosity of oil recommended in your vehicle’s owner’s manual.

Oil Contamination

Sometimes, contaminants or debris in the oil can interfere with the sensor’s operation, causing it to give false readings. Regular oil changes and using high-quality oil can help prevent this.

Software or ECU Issues

In some cases, a software glitch or issue with the vehicle’s engine control unit (ECU) can cause false readings from the oil level sensor. Updating or reprogramming the software may resolve the problem.

Oil Pump Failure

While less common, problems with the oil pump can also cause the low oil level light to come on. If the pump is not circulating oil efficiently, it can create a situation where the sensor detects lower pressure than expected, even with enough oil in the engine.

What to Do If the Oil Light Comes on Subaru

Step 1: Check the oil level

Verify the oil level using the dipstick and add oil if it’s low. Refer to your owner’s manual for the correct oil type and viscosity. Also, replace the oil filter if needed.

Step 2: Inspect for oil leaks

Examine the engine and the ground beneath the vehicle for signs of oil leaks. Address any leaks promptly.

Step 3: Diagnose sensors and the electrical system

Use a diagnostic scanner to read sensor data and compare it to actual conditions. This can help identify potential issues with the oil pressure sensor or other components. 

Test the oil pressure sensor, oil level sensor, and associated electrical circuit to determine if it’s functioning correctly. If necessary, replace the sensor.

Step 4: Inspect the engine oil pump

If the engine oil pump is suspected as the cause, the engine oil pan may need to be removed for further inspection. Then, install a new oil pump, re-install the oil pan, and replace the oil and filter.

In case you cannot diagnose or address the issue, contact a Subaru dealership or a qualified mechanic for a comprehensive inspection and repair.

FAQs

How long can you drive with the oil light on Subaru?

When the oil pressure warning light is illuminated, continuing driving can cause significant damage to your engine. It’s best to pull over safely, turn off the engine immediately, and then have your vehicle inspected by a mechanic.

On the other hand, the engine low oil level warning indicator is a less urgent matter. You don’t need to stop immediately but plan to stop at the nearest repair shop or gas station to top it off. The exact duration you can drive with this warning indicator depends on the severity of the oil level drop and your driving conditions.

Does Subaru have an oil change light?

Yes, most modern Subarus are equipped with an oil change indicator light. It is actually a warning message including an engine oil icon and a “Time to change engine oil” message.

This light is a service reminder that comes on at specific intervals to remind you that it’s time for an oil change. It doesn’t indicate a problem with your oil pressure or level. 

When you see this light, it’s time to schedule an oil change with your mechanic or do it yourself if you’re comfortable with that.

How to reset the oil change light on Subaru?

Remember that the menu options and procedures may vary slightly depending on your Subaru model and year, so always refer to your owner’s manual for precise instructions tailored to your vehicle.

• Locate the “Info” button. Push and hold this button to access the maintenance settings menu.
• Within the maintenance settings menu, look for the option “Engine Oil” and set the reminder intervals for your oil changes in terms of mileage or time.
• Confirm your choices and save the settings.
• Turn the ignition off and then back on. You should see the oil change light turning green and its respective intervals on your dashboard.

Watch the video below to learn how to set maintenance reminders on your Subaru.

What’s Next? 

Addressing the oil light in your Subaru is crucial for maintaining your engine’s health. Whether it’s checking the oil level, inspecting for leaks, or diagnosing sensor issues, timely action is essential. 

Have you faced similar situations with your vehicle’s oil system? Feel free to share your experiences and questions in the comments below – we’re here to help!