How to Change Kpa to Psi on a 2018 Subaru Crosstrek

Changing KPA to PSI on a 2018 Subaru Crosstrek is simple and ensures accurate tire pressure readings. This guide walks you through the dashboard menu settings so you can switch units quickly and safely.

If you’ve recently purchased a 2018 Subaru Crosstrek or are just getting familiar with its dashboard settings, you might have noticed something a little confusing: your tire pressure readings are showing up in kilopascals (KPA) instead of the more familiar pounds per square inch (PSI). Don’t worry—you’re not alone. Many drivers in the United States expect to see PSI on their dash, especially when checking tire pressure at gas stations or using a manual gauge. The good news? Switching from KPA to PSI on your 2018 Subaru Crosstrek is quick, easy, and doesn’t require any tools or a trip to the dealership.

The 2018 Subaru Crosstrek comes equipped with a user-friendly infotainment system and a multi-function display that lets you customize several vehicle settings—including units of measurement. Whether you’re preparing for a long road trip, doing routine maintenance, or just prefer the familiarity of PSI, knowing how to change this setting can make your driving experience smoother and more intuitive. In this guide, we’ll walk you through the entire process step by step, explain why the unit matters, and offer practical tips to keep your Crosstrek running safely and efficiently.

Understanding your vehicle’s dashboard settings might seem like a small detail, but it plays a big role in everyday usability. Imagine pulling up to a gas station with a tire pressure gauge marked only in PSI, only to see your car displaying KPA. Without knowing how to convert or change the units, you might second-guess whether your tires are properly inflated. That’s not just inconvenient—it could lead to underinflated tires, which reduce fuel economy, increase wear, and even pose a safety risk. By learning how to switch to PSI, you take control of your vehicle’s information display and ensure you’re always working with the most useful data.

Key Takeaways

• Access the Multi-Function Display: Use the steering wheel controls to navigate to the settings menu where unit preferences are stored.
• Understand KPA vs. PSI: KPA (kilopascals) and PSI (pounds per square inch) are both pressure units—PSI is more common in the U.S., while KPA is metric.
• Use the “Settings” Menu: The unit change option is located under the “Vehicle” or “Display” settings in the infotainment system.
• Confirm the Change: Always double-check that the display now shows PSI after making the switch to avoid confusion.
• Why It Matters: Correct units help you maintain proper tire pressure, improving safety, fuel efficiency, and tire life.
• No Tools Required: This is a software setting change—no physical tools or dealership visit needed.
• Works for Other Models: Similar steps apply to other Subaru models with comparable infotainment systems.

Understanding KPA and PSI: What’s the Difference?

Before diving into the steps to change the setting, it’s helpful to understand what KPA and PSI actually mean—and why your car might be showing one over the other. Both are units used to measure pressure, but they come from different measurement systems. PSI, or pounds per square inch, is part of the imperial system and is widely used in the United States. It tells you how many pounds of force are pressing on one square inch of area. This is the standard unit you’ll find on most tire pressure gauges, air compressors at gas stations, and vehicle manuals in the U.S.

KPA, or kilopascals, is part of the metric system and is commonly used in countries like Canada, Europe, and Australia. One KPA equals approximately 0.145 PSI. So, if your tire pressure reads 220 KPA, that’s roughly 32 PSI—a typical recommended pressure for many compact SUVs like the Crosstrek. While both units are scientifically valid, the choice often comes down to regional preference and familiarity.

The 2018 Subaru Crosstrek, like many modern vehicles, allows drivers to choose their preferred unit of measurement. This flexibility is great for international buyers or those who’ve moved from a country that uses metric units. However, if you’re in the U.S. and used to seeing PSI, having your dashboard show KPA can be confusing. It’s not that your car is malfunctioning—it’s simply set to a different default based on region or previous owner preferences.

Knowing the difference also helps you avoid mistakes. For example, if you see a reading of 200 KPA and think it’s low (because you’re used to seeing 30–35 PSI), you might overinflate your tires. That could lead to a harsher ride, reduced traction, and uneven tire wear. On the flip side, if you see 32 PSI and assume it’s too high (because you’re used to KPA), you might let air out unnecessarily. Either way, confusion over units can lead to improper tire maintenance.

Why You Should Switch to PSI on Your 2018 Subaru Crosstrek

There are several practical reasons why switching from KPA to PSI makes sense for most U.S. drivers. First and foremost, consistency is key when it comes to vehicle maintenance. Most tire pressure recommendations—whether from the manufacturer, tire placard on the door jamb, or your owner’s manual—are listed in PSI. The 2018 Subaru Crosstrek, for instance, typically recommends a tire pressure of around 32–35 PSI for normal driving conditions. If your dashboard is showing KPA, you’ll need to mentally convert that number every time you check your tires, which increases the chance of error.

Another reason to switch is compatibility with external tools. When you stop at a gas station to check your tire pressure, the air pump gauges are almost always calibrated in PSI. If your car is displaying KPA, you’ll have to either convert the numbers in your head or use a separate conversion tool. That’s not only inconvenient—it’s also easy to get wrong under pressure (no pun intended). By setting your Crosstrek to display PSI, you create a seamless experience between your vehicle and the tools you use to maintain it.

Safety is another important factor. Proper tire inflation is critical for handling, braking, and overall vehicle stability. Underinflated tires can overheat, increase stopping distances, and even blow out at high speeds. Overinflated tires reduce the contact patch with the road, leading to less grip and a bumpier ride. When you’re working with familiar units, you’re more likely to catch issues early and maintain your tires correctly.

Fuel efficiency also plays a role. Tires that are properly inflated reduce rolling resistance, which means your engine doesn’t have to work as hard. Studies show that underinflated tires can reduce fuel economy by up to 3%. Over time, that adds up—especially for daily commuters or road-trippers. By using PSI, you make it easier to stay on top of tire maintenance and keep your Crosstrek running efficiently.

Finally, peace of mind matters. When you know your dashboard is showing the same units as your tire gauge, you can trust the information you’re seeing. There’s no guesswork, no mental math, and no second-guessing. That confidence makes driving safer and more enjoyable, whether you’re navigating city streets or exploring backroads.

Step-by-Step Guide: How to Change KPA to PSI on a 2018 Subaru Crosstrek

Now that you understand why switching to PSI is beneficial, let’s get into the actual process. Changing the unit of measurement on your 2018 Subaru Crosstrek is straightforward and takes less than two minutes. You don’t need any special tools, apps, or technical knowledge—just your hands and a few seconds of attention. The setting is controlled through the multi-function display on your dashboard, which is accessed using the buttons on your steering wheel.

Here’s exactly what you need to do:

Step 1: Turn on the Ignition

Start by turning the ignition to the “ON” position. You don’t need to start the engine—just make sure the dashboard lights up and the infotainment system is active. This gives you access to all the vehicle settings. If your car is already running, that’s fine too. The key is that the electronics are powered and the display is visible.

Step 2: Access the Multi-Function Display

Look at your instrument cluster, just behind the steering wheel. You’ll see a small screen that shows information like fuel level, trip odometer, and—importantly—tire pressure. To navigate this display, use the arrow buttons on the left side of your steering wheel. These buttons let you scroll through different menus and options.

Press the “INFO” or “DISP” (Display) button repeatedly until you see the main menu screen. You should see options like “Trip Meter,” “Fuel Economy,” “Vehicle Settings,” and “Maintenance.” Use the up and down arrows to highlight “Vehicle Settings” or “Settings,” then press the “Enter” or “OK” button (usually the center button or a checkmark icon).

Step 3: Navigate to the Unit Settings

Once you’re in the Settings menu, scroll down using the arrow buttons until you find an option labeled “Units,” “Measurement Units,” or something similar. On some 2018 Crosstrek models, this might be under a submenu like “Display” or “General.” Don’t worry if the exact wording is slightly different—look for anything related to units of measurement.

Select this option by pressing “Enter” or “OK.” You should now see a list of units that can be changed, such as distance (miles vs. kilometers), temperature (Fahrenheit vs. Celsius), and pressure (PSI vs. KPA).

Step 4: Change Pressure Units from KPA to PSI

Highlight the “Pressure” or “Tire Pressure” option. You’ll likely see it currently set to “KPA.” Use the left or right arrow buttons to switch it to “PSI.” As you toggle, you should see the unit change instantly on the screen.

Once you’ve selected PSI, press “Enter” or “OK” to confirm your choice. Some models may ask for confirmation—if so, select “Yes” or “Confirm.”

Step 5: Exit the Menu and Verify the Change

Press the “Back” or “Exit” button to return to the main display. Now, check your tire pressure screen. It should now show readings in PSI instead of KPA. For example, instead of “220 KPA,” you’ll see “32 PSI.”

Take a moment to verify that the change has taken effect. If you’re near a gas station, you can even compare the dashboard reading with a manual tire pressure gauge to ensure accuracy.

Pro Tips for a Smooth Experience

– If you can’t find the “Units” option, consult your owner’s manual. The exact menu path can vary slightly depending on the trim level and infotainment system version.
– Some Crosstrek models have a “Reset” option in the settings. Avoid selecting this unless you want to restore factory defaults.
– If the change doesn’t stick, try turning the ignition off and on again. Sometimes the system needs a quick reboot to apply new settings.
– Make sure no one else is driving the car and changing the settings back—especially if you share the vehicle with family members who prefer metric units.

Troubleshooting Common Issues

Even though changing from KPA to PSI is usually a smooth process, you might run into a few hiccups. Don’t panic—most issues are easy to resolve with a little patience.

The Setting Won’t Save

If you change the unit to PSI but it reverts back to KPA after turning the car off, there could be a few reasons. First, make sure you’re pressing “Enter” or “OK” to confirm the change—some menus require an extra step to save. Second, check if your car has a “Guest” or “Valet” mode enabled, which can restrict certain settings. Finally, a weak battery or software glitch could cause settings to reset. Try disconnecting the battery for 10 minutes (if you’re comfortable doing so) to reset the system.

Can’t Find the Units Menu

Menu layouts can vary between trims and model years. If you don’t see “Units” right away, look under “Display,” “General,” or “Vehicle Info.” Some systems group all measurement units together, while others separate them by category. If you’re still stuck, refer to your owner’s manual or search online for a PDF version specific to your 2018 Crosstrek.

Dashboard Still Shows KPA After Change

This could mean the change didn’t apply correctly. Try repeating the steps slowly, making sure each selection is confirmed. Also, ensure the ignition is fully on—some settings won’t save if the car is in accessory mode.

Touchscreen vs. Button Navigation

The 2018 Crosstrek uses physical buttons on the steering wheel for menu navigation, not a touchscreen. If you’re used to tapping a screen, this might feel unfamiliar at first. Take your time and use the arrows to move precisely.

Software Updates

Subaru occasionally releases software updates for the infotainment system. If you’re experiencing persistent issues, visit a dealership or check Subaru’s website to see if an update is available. These updates can improve menu functionality and fix bugs.

Maintaining Proper Tire Pressure: Tips for Long-Term Care

Now that your Crosstrek is displaying PSI, it’s the perfect time to talk about tire maintenance. Proper tire pressure isn’t just about units—it’s about safety, performance, and longevity. Here are some practical tips to keep your tires in top shape:

Check Tire Pressure Monthly

Even with a TPMS (Tire Pressure Monitoring System), it’s smart to manually check your tires once a month. TPMS alerts you when pressure is significantly low, but it won’t catch small changes. Use a reliable digital tire gauge to get accurate readings.

Check When Tires Are Cold

Always check tire pressure when the tires are cold—meaning the car hasn’t been driven for at least three hours. Driving heats up the tires, increasing pressure and giving a false reading.

Use the Recommended PSI

Look for the tire pressure placard on the driver’s side door jamb. It lists the recommended PSI for your specific tires and load. Don’t rely on the number printed on the tire sidewall—that’s the maximum pressure, not the recommended one.

Adjust for Load and Conditions

If you’re carrying heavy cargo or driving in extreme temperatures, you may need to adjust tire pressure slightly. Cold weather can drop pressure by 1 PSI for every 10°F decrease in temperature.

Rotate Tires Regularly

Rotating your tires every 6,000 to 8,000 miles helps ensure even wear. This extends tire life and maintains consistent performance.

Don’t Ignore the Spare

If your Crosstrek comes with a full-size spare, check its pressure too. A flat spare is no help in an emergency.

Conclusion

Changing KPA to PSI on your 2018 Subaru Crosstrek is a small adjustment that makes a big difference in daily driving. It simplifies tire maintenance, improves safety, and ensures you’re always working with familiar, accurate information. With just a few button presses on your steering wheel, you can switch from metric to imperial units and enjoy a more intuitive dashboard experience.

This guide has walked you through the entire process—from understanding the difference between KPA and PSI to navigating the settings menu and troubleshooting common issues. We’ve also shared tips for maintaining proper tire pressure, because knowing the right unit is only half the battle. The other half is using that information to keep your Crosstrek running smoothly.

Remember, this setting change is permanent until you decide to switch it back. So once you’ve made the switch to PSI, you can forget about conversions and focus on the road ahead. Whether you’re commuting to work, heading out on a weekend adventure, or just running errands around town, having the right information at your fingertips makes all the difference.

So go ahead—take two minutes, follow the steps, and enjoy the clarity of PSI on your dashboard. Your tires (and your peace of mind) will thank you.

Frequently Asked Questions

Can I change KPA to PSI on other Subaru models?

Yes, most modern Subaru models with similar infotainment systems allow you to change pressure units. The steps are nearly identical for models like the Outback, Forester, and Impreza.

Will changing to PSI affect my tire pressure monitoring system (TPMS)?

No, switching units only changes how the pressure is displayed. The TPMS continues to monitor tire pressure accurately regardless of the unit shown.

What if my 2018 Crosstrek doesn’t have a “Units” menu?

Some base trims or older software versions may have limited settings. Check your owner’s manual or visit a Subaru dealer to confirm if your model supports unit changes.

Is it safe to drive with KPA readings?

Yes, it’s safe as long as you understand the values. However, using PSI is more convenient in the U.S. and reduces the risk of misreading pressure levels.

Do I need to reset the TPMS after changing units?

No, you don’t need to reset the TPMS. The system automatically adjusts to display the correct unit without any additional steps.

Can I switch back to KPA if I change my mind?

Absolutely. Simply follow the same steps and select KPA instead of PSI. You can switch between units as often as you like.