As vehicles become more technologically advanced, manufacturers are implementing sophisticated security measures to protect their systems. For Chrysler, Dodge, Jeep, and Ram vehicles built in 2018 and later, this comes in the form of a security gateway module. While this gateway is designed to prevent unauthorized access and potential hacking, it also restricts legitimate diagnostic and programming procedures. If you need to work on your newer FCA vehicle’s computer systems, an Obd2 Bypass is often necessary.
Understanding the Security Gateway Module
Modern FCA (Fiat Chrysler Automobiles, now Stellantis) vehicles incorporate a security gateway module to safeguard the vehicle’s control network from cyber threats. This module acts as a gatekeeper, controlling communication between the vehicle’s internal network and the outside world, including diagnostic tools connected via the OBD2 port.
While crucial for security, this gateway prevents direct communication with all vehicle modules using standard OBD2 scanners and programmers. This is where an OBD2 bypass, also known as a security gateway bypass, becomes an essential tool.
What is an OBD2 Bypass?
An OBD2 bypass device is a hardware solution designed to temporarily deactivate the security gateway module in compatible FCA vehicles. It essentially bridges the connection between the security gateway and the vehicle’s computer, allowing direct access for diagnostic and programming tools.
It’s important to understand that an OBD2 bypass does not perform any programming or software modifications itself. Its sole function is to enable communication with the vehicle’s systems that would otherwise be blocked by the security gateway. This allows automotive professionals and enthusiasts to:
- Perform advanced diagnostics
- Program new keys or modules
- Customize vehicle settings (depending on the tool used)
- Utilize various OBD2 programmers and scanning tools
Why You Need an OBD2 Bypass for 2018+ FCA Vehicles
If you own a Chrysler, Dodge, Jeep, or Ram vehicle manufactured in 2018 or later, you will likely encounter the security gateway when attempting any in-depth diagnostics or programming. Without an OBD2 bypass, many standard OBD2 tools will have limited functionality or be completely blocked from accessing critical vehicle systems, specifically beyond the Body Control Module (BCM).
This limitation is significant for tasks such as:
- Resetting or configuring electronic control units (ECUs)
- Performing advanced system calibrations
- Accessing certain diagnostic trouble codes (DTCs)
Therefore, for workshops and individuals needing comprehensive access to these newer FCA vehicles, an OBD2 bypass is not just a convenience, but a necessity.
OBD2 Bypass Compatibility
Our OBD2 bypass solutions are compatible with the following FCA vehicles:
- 2018-2023 Chrysler (various models)
- 2018-2023 Dodge (various models)
- 2018-2023 Jeep (various models)
- 2018-2023 RAM (various models)
Important Compatibility Notes:
- Two Bypass Module Types: We offer two types of bypass modules: C-MODBYP and C-INTBYP. The C-INTBYP, also known as a “pigtail” bypass, is particularly recommended for heavy-duty (HD) vehicles, offering easier installation in some applications.
- Multi-Vehicle Use: Our OBD2 bypass modules are not VIN-locked. This means a single device can be used on multiple compatible FCA vehicles, making it a cost-effective solution for workshops or owners of multiple FCA vehicles.
- Third-Party Tool Compatibility: While designed to work seamlessly with OBD Genie programmers, our OBD2 bypass is also compatible with a wide range of third-party OBD2 scanning and diagnostic tools. However, when using with an OBD Genie programmer, it is recommended to remove any other third-party devices from the vehicle temporarily during the programming process to avoid potential conflicts.
Key Considerations Before Using an OBD2 Bypass
- Non-Returnable Product: Due to the nature of this product as a simple bypass device without software, it is non-returnable. Please ensure compatibility with your vehicle before purchase.
- International Vehicles: OBD Genie products, including this OBD2 bypass, are primarily designed for vehicles manufactured to US specifications. If your vehicle was manufactured outside of the United States, please contact our support team at [email protected] to confirm compatibility before ordering.
- Not a Repair Tool: An OBD2 bypass is not a maintenance or repair item. It will not fix existing mechanical or electrical issues within your vehicle. If your vehicle has a malfunction, it is essential to address the underlying problem through proper diagnosis and repair procedures at a qualified mechanic or dealership.
- BCM Access Only: It is crucial to note that, according to the original article, this specific OBD2 bypass may only grant communication with the Body Control Module (BCM) and not directly with the Engine Control Unit (ECU) in all scenarios. Verify the capabilities with your specific diagnostic tools and vehicle needs.
OBD2 Bypass Installation Guide
Installing an OBD2 bypass is generally a straightforward process:
- Locate the Security Gateway Module: The location of the security gateway module varies depending on the specific FCA vehicle model. Consult your vehicle’s service manual or online resources for the exact location.
- Disconnect the Plugs: Once located, disconnect the two electrical plugs connected to the security gateway module.
- Connect to the Bypass Device: Connect the disconnected plugs into the corresponding connectors on the OBD2 bypass device.
- Use Your OBD2 Tool: With the bypass installed, you can now connect your OBD Genie programmer or third-party diagnostic tool to the vehicle’s OBD2 port and proceed with your desired diagnostic or programming procedures. Follow the instructions provided with your OBD2 tool.
- Revert to Original Configuration: After completing your tasks, you can remove the OBD2 bypass and reconnect the original security gateway module plugs as they were from the factory to restore the vehicle’s original security configuration.
For specific bypass module locations and detailed installation instructions tailored to your vehicle model, further resources may be available online or through the manufacturer of your OBD2 bypass device.
Conclusion
The OBD2 bypass is an indispensable tool for anyone needing to perform advanced diagnostics or programming on 2018 and newer Chrysler, Dodge, Jeep, and Ram vehicles. By temporarily bypassing the security gateway module, it unlocks access to critical vehicle systems, enabling a wider range of diagnostic and customization possibilities. Remember to choose the correct bypass module for your vehicle and always prioritize safe and informed vehicle modifications.
