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Servicing PHEVs vs. Hybrids

Posted on May 20, 2025

Servicing PHEVs vs. Hybrids: What KW Mitsubishi Drivers Need to Know

 

As more drivers embrace electrified vehicles, understanding how to properly maintain them has never been more important. At KW Mitsubishi, we’ve seen a growing number of owners choosing between Hybrid Electric Vehicles (HEVs) and Plug-In Hybrid Electric Vehicles (PHEVs)—particularly the popular Mitsubishi Outlander PHEV. While both technologies improve fuel efficiency and reduce emissions, they have different service needs.

 

In this article, we’ll explore the key differences in maintaining HEVs and PHEVs, provide a maintenance comparison chart, and explain why choosing a dealership with hybrid expertise—like KW Mitsubishi—makes all the difference.

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What Is a Hybrid (HEV) and How Is It Maintained?

 

Hybrid Electric Vehicles (HEVs) like the Mitsubishi Eclipse Cross PHEV running in hybrid mode use a combination of a gasoline engine and an electric motor. The vehicle charges its battery through regenerative braking and engine power, meaning it doesn’t require an external charger.

 

From a maintenance standpoint, HEVs are generally low-maintenance compared to traditional gasoline vehicles, but they do come with some unique needs:

 

Battery System Checks are critical for ensuring the health of the high-voltage battery pack. While Mitsubishi designs its hybrid batteries to last for years, they still require periodic diagnostics to monitor performance, charge retention, and system efficiency.

 

Brake System Maintenance is a bit different in hybrids due to regenerative braking. This feature uses the electric motor to slow the car and recharge the battery, meaning the traditional friction brakes experience less wear. However, it’s still important to check the pads, rotors, and brake fluid regularly to ensure everything is working properly.

 

Cooling System Inspections are also a must. Hybrids include an inverter and other electronic components that generate heat, requiring dedicated cooling systems. These systems should be inspected regularly to ensure proper coolant levels and prevent overheating of critical parts.

 

Software Updates are more frequent in hybrid vehicles than in traditional ones. Mitsubishi often releases updates that improve fuel economy, drivability, or battery management. Our technicians at KW Mitsubishi ensure your vehicle is always running on the latest software version for optimal performance.

 

In addition to these hybrid-specific tasks, you’ll still need to keep up with conventional services like oil changes, filter replacements, and tire rotations.

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Servicing Plug-In Hybrids (PHEVs): What’s Different?

 

Plug-In Hybrid Electric Vehicles (PHEVs), such as the Mitsubishi Outlander PHEV, offer the flexibility of electric-only driving with the reassurance of a gasoline engine. The addition of a larger high-voltage battery and an external charging system means there are extra components to maintain—and more opportunities for cost savings through efficient electric operation.

 

Charging System Inspection is one of the most important service items unique to PHEVs. This includes checking the condition of the charging port, cables, and onboard charger. Wear, corrosion, or malfunction in these systems can lead to slow or failed charging, reducing your ability to drive on electric power.

 

High-Voltage Battery Maintenance is more extensive than in an HEV, simply because PHEVs rely on a larger battery to support full electric driving. Routine diagnostics are essential to monitor capacity, health, and charging behavior. If issues arise, early detection can help avoid costly battery replacements down the road.

 

Thermal Management System Checks are vital because PHEV batteries generate more heat during charging and electric driving. Our technicians inspect coolant levels, pump performance, and heat exchangers to ensure your vehicle's thermal systems are regulating temperatures properly and preventing battery degradation.

 

Transmission Fluid Checks are also more nuanced in PHEVs. Many plug-in hybrids use unique transmission setups to manage the interaction between the electric and gasoline powertrains. These systems may have different fluid requirements or intervals than standard vehicles. At KW Mitsubishi, we follow factory recommendations to ensure long-term durability.

 

The increased complexity of PHEVs means they benefit from more frequent inspections—particularly in the first few years of ownership or if you’re maximizing electric-only driving.

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Side-by-Side Comparison: HEV vs. PHEV Maintenance

 

To help clarify how the maintenance of these vehicles differs, here’s a general overview comparing common service intervals. Please note that specific requirements may vary by model and driving habits:

 

 

These intervals are general estimates—your Mitsubishi’s service manual offers the most accurate guidance. When in doubt, our service team is always happy to advise.

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Why KW Mitsubishi Is the Right Place for Hybrid and PHEV Maintenance

 

Your Mitsubishi hybrid or plug-in hybrid is a precision-engineered machine. Maintaining it properly requires more than just routine care—it demands the attention of specialists who are trained specifically on electrified vehicles.

 

At KW Mitsubishi, we’ve invested in the tools, training, and expertise to become a leading service destination for HEVs and PHEVs in Kitchener-Waterloo and the surrounding area.

 

Our expert technicians are factory-certified and receive continuous training to stay current on Mitsubishi’s evolving hybrid technologies. Whether it's an advanced battery scan or a software update, we know exactly what your vehicle needs and how to deliver it.

 

We also use genuine Mitsubishi parts for all repairs and replacements. These OEM components are designed specifically for your vehicle and ensure compatibility, performance, and safety.

 

Customer experience is just as important. Our service advisors take the time to explain maintenance recommendations clearly, helping you make informed decisions. With a comfortable waiting lounge, easy online booking, and transparent pricing, servicing your hybrid has never been easier.

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Ready to Give Your Hybrid or PHEV the Service It Deserves?

 

Proper maintenance is key to enjoying the full benefits of your Mitsubishi Hybrid or Plug-In Hybrid. Whether you're due for a battery check, a software update, or a complete diagnostic, KW Mitsubishi is your go-to source for specialized hybrid service in the Kitchener-Waterloo region.

 

👉 Schedule Your Service Appointment Now

 

We’re here to make sure your Mitsubishi stays efficient, reliable, and ready for wherever the road takes you.