If you’re a 2011 Jeep Patriot owner looking to use an OBD scanner for diagnostics or modifications, it’s essential to choose the right tool. Many owners are turning to OBD2 scanners for tasks ranging from reading trouble codes to customizing vehicle settings. However, experiences can vary, and compatibility is key. This article delves into one user’s experience with the JScan app on a 2011 Jeep Patriot, highlighting potential issues and considerations when selecting an OBD scanner for this vehicle.
JScan App and 2011 Jeep Patriot: A Case of Limited Compatibility
One Jeep Patriot owner recently shared their experience using the JScan app, a popular choice for Jeep diagnostics and customization. The user attempted to make two specific modifications: adjusting the tire size setting and altering the Daytime Running Lights (DRLs) to utilize low beams and sidelights instead of the factory high beam DRLs. Unfortunately, these changes led to unexpected problems.
The day after making these adjustments with JScan, the owner encountered a Check Engine Light and their 2011 Jeep Patriot entered limp mode. The diagnostic code reader revealed a P0610 TRANS CONTROL code, indicating an issue with the transmission control system. Resolving this issue and exiting limp mode proved to be a time-consuming process, taking two days to rectify.
Troubleshooting Limp Mode and Error Codes
To address the limp mode and engine light, the Jeep Patriot owner undertook a series of troubleshooting steps. This involved disconnecting the battery and draining the electrical circuit by connecting the disconnected battery cables together (grounding the circuit). After approximately 30 minutes, the battery was reconnected. The owner then cycled the ignition switch several times without starting the engine to allow the system to reset. Finally, the engine was started and allowed to idle until it reached a stable RPM of around 800, suggesting the engine control unit (ECU) was relearning its settings.
Following this reset procedure, the owner re-engaged with the JScan app. Navigating to the settings menu, they reviewed their previous adjustments, specifically focusing on tire size and DRL configurations. They meticulously reverted all settings back to their original factory values. Subsequently, an advanced scan was performed using JScan, and all stored trouble codes were cleared.
Another advanced scan was conducted to confirm the error codes status. The P0610 code, which triggered limp mode, was successfully cleared. However, three new codes emerged: B1634, B1630, and B1638. These codes were related to the high beam control circuit and front control module, indicating potential issues within the headlight system.
Despite these remaining headlight-related codes, a test drive revealed that the Check Engine Light had extinguished, and the Jeep Patriot was no longer in limp mode. The vehicle was running normally, albeit with the persistent headlight codes.
Manufacturer Confirmation and Lingering Issues
Seeking clarification, the Jeep Patriot owner contacted the JScan manufacturer regarding the issues encountered. The manufacturer confirmed that the JScan app “does not do well with the Patriot tire size changes,” acknowledging a known limitation in compatibility with this specific vehicle model and modification.
Currently, the Jeep Patriot exhibits three active codes (B1633, B1634, and B1638), all associated with high and low beam headlight circuits. As long as the owner refrains from attempting to alter the DRL settings or tire size using JScan, the vehicle operates without entering limp mode. However, minor issues persist, including a slight speedometer inaccuracy due to the tire size discrepancy and the high beams activating when low beams are selected.
Further experimentation with JScan, such as attempting to enable HID headlights and other settings, also resulted in the reappearance of the engine light and limp mode, reinforcing the incompatibility issues. These recurring problems were consistently challenging to resolve.
It’s important to note that the owner’s Jeep Patriot is equipped with aftermarket HID projector headlights installed with relays. The relay coils are wired to the original headlight circuits, using the headlight wiring to trigger the relays and supply 12V power to the HID system. It is speculated that the vehicle’s computer system might be detecting this modification, contributing to the error codes and potential conflicts with the JScan app when DRL or headlight settings are altered.
Exploring Alternatives: Appcar Diagfca?
Considering the limitations encountered with JScan, the Jeep Patriot owner is now contemplating exploring alternative OBD scanner software, specifically Appcar Diagfca. The question remains whether Appcar Diagfca will offer improved compatibility and successfully handle tire size adjustments and DRL modifications on a 2011 Jeep Patriot without triggering similar error codes and limp mode scenarios. Further research and user experiences with Appcar Diagfca on this specific Jeep model would be valuable in making an informed decision.
Choosing the Right OBD Scanner for Your 2011 Jeep Patriot
This real-world experience underscores the importance of verifying OBD scanner compatibility, especially when considering making modifications to your 2011 Jeep Patriot. While JScan is a capable tool for many Jeep models, it appears to have limitations regarding tire size adjustments and DRL programming on the Patriot. For owners looking to perform these specific customizations, exploring alternative OBD scanners like Appcar Diagfca or conducting thorough research on tool compatibility with the 2011 Jeep Patriot is highly recommended. Always prioritize tools known for reliable performance and compatibility with your specific vehicle to avoid potential issues and ensure a smooth diagnostic and modification experience.
