A car scanner diagnostic tool, often referred to as a code reader, can help you understand why your check engine light is on. It reads live data and diagnostic trouble codes (DTCs) from your car’s computer, providing valuable insights into potential issues. This FAQ addresses common questions about using a car scanner for diagnostics.
Understanding Car Scanner Capabilities
Does a Diagnostic App Come With the Scanner?
While a companion app can enhance the functionality of a car diagnostic scanner, it’s usually optional. Many scanners offer standalone functionality, allowing you to read and clear codes without an app. However, apps often provide additional features like repair recommendations, data logging, and technical service bulletins.
Are Software Updates Free?
Typically, software updates for car scanners are free. Manufacturers understand the importance of keeping the device’s software current to ensure compatibility with newer vehicle models and to provide access to the latest features. Subscription fees are rare for basic code readers.
Can I Use the Scanner Internationally?
Most car scanners are designed to work with North American OBD (On-Board Diagnostics) protocols. Therefore, functionality outside the United States and Canada isn’t guaranteed. While the device might connect to some international vehicles, it might not be able to read all systems or provide accurate data.
Will the Scanner Work on My Specific Car?
Compatibility depends on your vehicle’s year, make, and model. Most scanners support OBD2-compliant vehicles manufactured after 1996. However, specific features might vary. Always check the manufacturer’s compatibility chart or coverage checker before purchasing to ensure it works with your vehicle.
Does the Scanner Support FCA Vehicles?
Scanners can typically diagnose most systems on FCA (Fiat Chrysler Automobiles) vehicles made before 2018. For newer FCA models (2018 onwards), functionality might be limited due to AutoAuth security. Basic functions like reading live data and TPMS (Tire Pressure Monitoring System) relearn might work, but advanced functions like code erasure and oil resets might require a scanner with AutoAuth access.
Can the Scanner Reprogram My Car’s Computer?
No, standard car diagnostic scanners cannot reprogram a vehicle’s computer or program key fobs. These tasks require specialized equipment and software typically used by professional mechanics and dealerships.
Can I Use the Scanner on a Car That Won’t Start?
No, OBD2 scanners require the vehicle’s engine to crank or start to establish communication with the car’s computer (ECU). If the engine doesn’t crank, the scanner won’t be able to power on or establish a connection, preventing it from retrieving diagnostic information.
Conclusion
A car scanner with live data and code reading capabilities empowers you to understand your car’s health. Choosing the right scanner depends on your specific needs and vehicle compatibility. Always consult the manufacturer’s documentation to ensure the scanner meets your requirements.
