The Dodge Challenger, known for its muscle and performance, presents a unique challenge when it comes to using OBD2 scan tools. Starting in 2018, Dodge implemented a “secure gateway” in its vehicles, including the Challenger. This security measure, while intended to protect the car’s systems, can prevent some scan tools from performing certain functions, such as clearing diagnostic trouble codes (DTCs) or making changes to the vehicle’s settings. This article explores the challenges and solutions for using a scan tool with a Challenger.
Understanding the Challenger’s Secure Gateway
The secure gateway acts as a firewall for the Challenger’s onboard computer, preventing unauthorized access and modifications. While standard OBD2 scan tools can still read diagnostic information, they are often blocked from writing data, which is necessary for tasks like clearing codes. This can be frustrating for owners who want to diagnose and resolve issues themselves.
For example, a common scenario might involve using a Bluetooth OBD2 adapter like the BlueDriver with a smartphone app. While the BlueDriver can successfully connect and read data from the Challenger (engine running is crucial for connection!), it may not be able to clear codes due to the secure gateway. This limitation applies to many other scan tools on the market. Even essential functions like smog test readiness checks, valuable for ensuring your vehicle passes emissions tests, might be affected.
Bypassing the Secure Gateway for Full Functionality
Fortunately, solutions exist for Challenger owners who need full scan tool functionality. Companies like Z Automotive offer bypass harnesses specifically designed to circumvent the secure gateway. These harnesses provide an alternative connection point that allows unrestricted access to the vehicle’s systems.
Two popular options from Z Automotive include:
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Double Bypass: This custom wiring harness installs in the rear of the Challenger, under the trunk floor, and provides a separate OBD2 port that bypasses the secure gateway entirely.
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T-Harness: This Y-splitter harness adds a second OBD2 port that is not subject to the security restrictions. This provides an easy way to connect a scan tool without modifying the vehicle’s existing wiring.
These bypass harnesses enable full functionality for scan tools, allowing users to clear codes, perform advanced diagnostics, and even access certain programming features.
Choosing the Right Challenger Can Scan Tool
When selecting a scan tool for a Challenger, consider the following:
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Compatibility: Ensure the scan tool is compatible with the Challenger’s year and model.
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Functionality: Determine the desired functions, such as reading codes, clearing codes, live data streaming, and bi-directional control.
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Secure Gateway Bypass: If full functionality is required, a bypass harness from a reputable provider like Z Automotive is recommended.
The secure gateway in the Dodge Challenger presents a hurdle for using scan tools, but with the right knowledge and tools, it’s easily overcome. Solutions like bypass harnesses allow Challenger owners to utilize the full potential of their scan tools for diagnostics and maintenance.
