This article was reviewed by the YOUCANIC editorial team.
Starting in 2018, Fiat Chrysler Group (FCA Stellantis) vehicles such as Chrysler, Dodge, Jeep, and RAM are equipped with a secure gateway module, also called the security gateway module, firewall module, SGW, or SGM. According to FCA, the purpose of the SGM module is to protect the car from being hacked over the cellular network. This device is designed to prevent the hacking of the vehicle’s CAN bus over the 3G or LTE network.
In addition to preventing internet-based hacking, the manufacturer has disabled access for aftermarket diagnostic scanners to clear fault codes, perform activations, and perform programming. While FCA states that they are preventing vehicle hacking, it seems that FCA is using technology to protect its profits by not allowing DIYers and small repair shops from being able to diagnose FCA vehicles fully.
In the following video, we diagnose a 2021 Dodge Charger with a Security Gateway Module. As you can see in the video, we can read codes from all the modules and view live data but can not clear the codes even if the fault codes are in STORED, HISTORY, or NOT ACTIVE status. One way to clear those codes on 2018 and newer FCA vehicles is to install a 12+8 SGM Bypass cable which we cover later in this article.
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You can read codes and view live data using the YOUCANIC full system scanner (or any other scanner brand) to diagnose a 2018 and newer Dodge, Chrysler, or Jeep . The SGM module blocks access to the vehicle to clear codes and perform active tests if you have not bypassed the security gateway module using one of the methods listed below. Functions disabled by the SGW module include clearing fault codes, resetting, and all bi-directional functions such as calibrations, relearns, activations, and adjustments.
Bypass Security Gateway Module
The good news is that the security gateway module can be bypassed. There are three different ways to bypass the security gateway module on a Dodge, Jeep, Chrysler, Fiat, or any other 2018 and newer FCA vehicle.
– Locate the security gateway module under the dashboard, unplug it, and install the 12+8 cable. This will give you full access to the vehicle. Diagnose the vehicle, clear codes, carry bi-directional functions, and resets. Reinstall the security gateway module once you are done with the troubleshooting.
OBDGENIE – aftermarket security (SGW) bypass devices, such as OBDGENIE, can disable the SGM firewall and allow you to access the vehicle’s various control units.
The last and least preferred method is registering the scan tool with Chrysler, Dodge, and Jeep and paying the vehicle manufacturer a $50/year subscription. We don’t recommend this method because we believe that, as an owner, you should be able to diagnose your vehicle without paying the manufacturer a yearly subscription to get access to your vehicle.
Using one of these methods, you can bypass the Security Gateway Module (SGM), which is designed to restrict direct access to the OBD2 port and communication with the car. Any of these bypass methods give you full communication to diagnostics and make it possible for aftermarket diagnostics and programming tools to access the CAN bus directly. The problem with Chrysler’s Secure Gateway Module is also explained in the Vehicle Service Pros article.
What is the Chrysler FCA Secure Gateway Module?
FCA Security Gateway Module
The Security Gateway Module (SGM/SGW) uses an encryption algorithm to isolate most diagnostic requests from aftermarket diagnostic devices except the original equipment or devices registered with FCA and pay a yearly subscription. As a result, non-original diagnostic tools can only be used to read fault codes, identify the vehicle’s VIN, and view data streams through the OBD diagnostics port.
A professional scanner can not be used for tasks such as clearing fault codes, performing motion tests, or programming the ECU unless the owner or mechanic pays a yearly subscription to FCA.
However, the isolation of the SGM/SGW can now be bypassed using the FCA 12+8 dedicated conversion diagnostic connector, which allows you to fully diagnose the vehicle without paying a yearly subscription.
Fiat Chrysler Group Wants You to Subscribe to be Able to Diagnose Your Car.
Fiat Chrysler Group (FCA) wants you to pay a yearly subscription plan to be able to diagnose your vehicle. AutoAuth subscription-based service allows auto mechanics, technicians, and DIYers to perform diagnostic repairs on vehicles with the SGW module installed by providing an authentication process with FCA servers before you can do any in-depth troubleshooting of the vehicle. FCA’s answers below regarding the SGW avoid acknowledging that SGW limits car owners from repairing their vehicles without paying a yearly subscription.
There is a yearly fee of $50 for AutoAuth-registered scan tools for shops with up to five employees. Each additional employee beyond the first five incurs an additional charge of $2 per year. Individual owners, who are not running a shop, also pay a yearly fee of $50 for AutoAuth-registered scan tools. Individual owners can register up to five additional users at no extra cost, but any users beyond the first five will incur a charge of $2 per year.
If you are the owner of a 2018 or newer Chrysler, Dodge, Jeep, or any other FCA vehicle, you should not have to pay a yearly subscription to access your vehicle. Aftermarket solutions allow you to disable the Secure Gateway Module (SGW) and access all systems in your vehicle the same way you can access pre-2018 models.
How to Bypass the Security Gateway Module?
Ports where you can install FCA SGW/SGM module bypass.
The Security Gateway Module Bypass is a tool that allows for expanded diagnostic options for Dodge, Jeep, Chrysler, and Fiat Italian cars, including the ENGINE, ABS, POWER STEERING, and CAN ECUs. Once the security gateway module is bypassed, you can connect to various control modules such as transmission, airbag, and different ECUs, depending on the model of the car.
One option is to use a bypass cable that allows you to write data to the vehicle’s electronic systems, such as clearing trouble codes, making adaptations, and activating certain features. Using a bypass cable is unnecessary if you only need to read data from the vehicle, such as reading trouble codes or viewing live data.
To use the bypass cable, you must locate the secure gateway module (also known as the SGW or security gateway module) under the vehicle’s steering wheel. Once you have found the SGW, you will need to unplug the two connectors and replace them with the connectors on the bypass cable. Then, you can connect your adapter to the other end of the bypass cable. You can purchase Security Bypass cable in many places – just search for “Chrysler 12 + 8 bypass cable,”. The other option to bypass the SGW module on FCA vehicles is to use the OBDGENIE.
Bypass Secure Gateway Module with OBDGENIE
Find the security gateway module in your vehicle and remove the two plugs. Connect the two plugs to the bypass device. Run the bypass module and wait for the green LED light to appear.
Once the feature is operational, remove the bypass device and reattach the security gateway module as it was initially installed from the factory. Let’s look at the step-by-step instructions on disabling Dodge, Chrysler, Jeep, and Fiat secure gateway modules with OBDGENIE.
Locate the gateway module SGW in your vehicle and remove the two plugs on the bottom of the module.
Temporarily plug these two plugs into the security Gateway module bypass.
Put the vehicle in the “run” position.
Plug the other adapter into the OBD2 port.
Wait for the green light or horn beep, which indicates that…
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