The Mystery of the Subaru Temp Gauge ‘i’ – What Every Driver Needs to Know!

Subaru has always been known for its reliable engine performance and advanced features. However, if you’re a Subaru car owner, you may have noticed the small letter "i" after the temperature gauge. This symbol may seem insignificant, but it actually holds great importance to the overall health of your vehicle. In this article, we will discuss what the "i" stands for, where to find it, what it indicates, and why it’s crucial to monitor it.

What is the "i" on the Subaru Temperature Gauge?

The "i" on the Subaru temperature gauge indicates the car’s performance and diagnostics feature. It’s a small notification that alerts the driver to possible engine troubles or other performance issues. The "i" symbol is included in newer Subaru models such as Forester, Outback, Legacy, and Impreza, among others.

Where to Find the "i" on the Subaru Dashboard

Subaru’s dashboard symbols are designed to be easy to locate and understand. The "i" symbol is located on the temperature gauge below the blue cold line. It is a small, illuminated symbol that appears when there is a performance issue or diagnostic fault in the vehicle.

What Does the "i" Indicate?

The "i" indicates a diagnostic trouble code. When the vehicle’s computer system identifies a problem, it generates a code that is stored in its memory. The "i" symbol appears when there is an active code stored, indicating a problem with the vehicle’s emissions, engine performance, or transmission. There are numerous codes that can trigger the "i" warning, ranging from simple engine misfires to more complex electrical issues.

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Why is it Important to Keep an Eye on the "i"?

The "i" warning symbol is a crucial indicator of potential engine issues or other performance problems. Ignoring the "i" may cause the problem to escalate, leading to further damage and costly repairs. It’s crucial to address these issues promptly as they could affect the safety of your vehicle and passengers. If the "i" remains on, it’s essential to take the vehicle to an authorized Subaru dealer or a qualified mechanic for repair.


Q: Will the "i" warning appear all the time if there’s a problem in the vehicle?

A: No, the "i" will only appear when the computer system identifies an active diagnostic trouble code. If the problem is intermittent, the "i" may come and go, or it may stay illuminated until the problem has been resolved.

Q: Can I clear the "i" code myself?

A: Technically, you can clear the "i" code yourself by disconnecting the vehicle’s battery. However, this isn’t a recommended solution as it won’t fix the underlying problem. In some cases, the light may return shortly after the battery is reconnected, and it may cause further damage.

Q: How much will it cost to repair an issue indicated by the "i" symbol?

A: The cost of repairs will depend on the nature of the problem. Some issues may be minor and easy to fix, while others may require more extensive repairs. It’s best to take the vehicle to a qualified mechanic or an authorized Subaru dealer for an accurate diagnosis and repair estimate.

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The Bottom Line

The "i" symbol on the Subaru temperature gauge is a valuable feature that alerts drivers to potential engine problems that require immediate attention. By monitoring the "i" and addressing problems promptly, drivers can ensure their vehicle’s safety, performance, and longevity. Remember to take your Subaru vehicle to an authorized dealer or a qualified mechanic if the "i" warning remains illuminated.

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Davis Bellew

As a Subaru owner and enthusiast, Davis has a deep understanding of the needs and concerns of Subaru drivers. He specializes in writing informative and engaging content about Subaru maintenance and repair, and his articles are always well-researched and easy to understand. When he's not writing, he enjoys hiking and photography.

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