Can You Change Mileage with a BlueDriver OBD2 Scanner?

The thought of changing a vehicle’s mileage might conjure images of shady used car lots and deceptive practices. And you’d be right to be wary! Odometer tampering is illegal and unethical. But what about those OBD2 scanners, like BlueDriver, that seem to offer so much control over your car’s computer? Can they be used to alter mileage? Let’s dive into the world of OBD2 scanners, mileage correction, and the capabilities of the BlueDriver.

BlueDriver OBD2 Scanner connected to a car’s OBD2 port

Understanding OBD2 Scanners and Their Limitations

OBD2 scanners, like the popular BlueDriver, are powerful tools for car owners. They plug into your vehicle’s OBD2 port, acting as a window into your car’s computer system. With a BlueDriver, you can:

• Read and Clear Diagnostic Trouble Codes (DTCs): Identify those pesky “Check Engine” light triggers and understand the issue.
• View Live Data Streams: Monitor engine performance, fuel economy, and other real-time data.
• Conduct Emissions Readiness Tests: Check if your vehicle is ready for an emissions test.

However, and this is crucial, OBD2 scanners are primarily designed for reading and diagnosing information. They are not designed to make significant alterations to your car’s core systems, especially something as critical as mileage.

Car dashboard showing mileage

Mileage and Your Car’s Computer: It’s Complicated

Your car’s mileage isn’t stored in just one place. It’s often recorded in multiple modules within the vehicle’s computer system, including:

• Engine Control Module (ECM): This is the brain of your car’s engine, and it often logs mileage data.
• Instrument Cluster: The part of your dashboard that displays the mileage usually has its own memory.
• Other Modules: Body control modules and even transmission control modules might also store mileage information.

The way these modules communicate and store data is complex and varies between car manufacturers. Attempting to alter the mileage in one module without affecting the others can trigger errors, inconsistencies, and even potentially damage your vehicle’s electronics.

BlueDriver and Mileage: Setting the Record Straight

To be absolutely clear: you cannot change mileage with a BlueDriver OBD2 scanner. BlueDriver, along with most reputable OBD2 scanners on the market, lacks the functionality to access and modify the secure areas of your car’s computer system where mileage is stored.

Attempting to hack or use unauthorized software to change your car’s mileage is illegal, dangerous, and likely to cause more harm than good.

Why Would Someone Ask About Changing Mileage?

While some individuals might inquire about changing mileage for illegal purposes, there are legitimate reasons why someone might want to adjust the reading:

• Instrument Cluster Replacement: If your instrument cluster malfunctions and needs replacing, the new one might display an incorrect mileage. A qualified mechanic can often program the correct mileage onto the new cluster.
• Engine Replacement: When a new engine is installed, the mileage should technically reflect the vehicle’s chassis mileage, not the engine’s. This often requires professional intervention.
• Tire Size Changes: Significant changes in tire size can affect the accuracy of your odometer readings. While not a mileage “change” in the traditional sense, adjustments might be needed.

Mechanic using diagnostic equipment on a car

The Bottom Line: Honesty is the Best Policy

Tampering with your car’s mileage is never the answer. If you have legitimate reasons for needing a mileage correction, always consult with a qualified mechanic or dealership. They have the knowledge, tools, and ethical responsibility to make adjustments legally and safely.