FCA 12+8 Cable Cannot Connect with 2025 Dodge RAM New Gateway?

Failed to add key 2025 Dodge Ram Sport 1500 with Autel IM608.  The secure gateway with a different connector. The 12+8 FCA gateway adapter and the Start connector cannot connect to the gateway connector.

Here is the clue.
New style gateway. No aftermarket device will program the key by OBD. The 2025 Dodge Ram 1500 (5th Gen DT, including Sport trim) has a newer style Security Gateway (SGW).

Requires a J2534 passthru device with WiTech.

Nothing aftermarket for new gateway.

Require Witech2.0 with NASTF. The nastf 4 digit pin is for witech.

 

You are seeing a completely different connector because Stellantis quietly overhauled the electrical architecture for the **2025 RAM 1500 refresh** (the Hurricane engine era).

The classic 12+8 pin Security Gateway (SGW) bypass cable used from 2018–2024 will **not** work on this truck.

 

Why the Connector is Different?

The 2025 RAM 1500 has upgraded to a new generation cybersecurity firewall utilizing **FD Ethernet (Flexible Data-rate Ethernet)**.

* **The Physical Difference:**
The old SGW relied on traditional CAN-bus pairs (which the 12+8 cable tapped into). The new module manages high-speed ethernet lines, meaning the physical pins, connector size, and wiring layout are totally redesigned.

* **The Software Difference:**
It enforces strict cryptographic authentication that cannot be bypassed by simply throwing a bridge harness between traditional CAN lines.

How to Successfully Program a Key
Because the physical bypass cables you might be used to are incompatible, the workflow for adding a key to a 2025 RAM has shifted toward **authorized software-level unlocking** rather than tearing apart the dash to find a physical bypass plug.

 

The Authorized Software Route (Recommended)
Instead of trying to find an adapter cable, you bypass the gateway digitally via the OBD-II port:

Hardware:
You will need a high-quality J2534 PassThru interface (like a Topdon R-Link, Autel MaxiFlash, or official Mopar MDP/MicroPod II) paired with a stable internet connection.

Software:
Use official OEM diagnostics via **wiTECH 2.0**.

Authentication:

You must have an active wiTech 2.0 account registered with your diagnostic platform. When you initiate the key programming procedure, the software communicates over the internet to officially unlock the Secure Gateway over the OBD port.

 

Note: If you are generating a smart key using universal aftermarket remotes (e.g., certain Xhorse or aftermarket platforms), many technicians have reported programming failures on 2025 models. For these newer architectures, it is highly recommended to use an original OEM Mopar proximity fob or a high-quality, pre-coded OE-equivalent key.

Autel IM608 Program 2011 VW Jetta AKL with Godiag GT110

User review:
My first attempt with a 2011 VW Jetta. Picked up the cluster today at the junk yard.

Just create a dealer key and learn key with Autel IM608 and Godiag GT110 test platform using pogo pin method.

 

 

Autel IM608 Copy BMW BCP Key with Godiag Clip Adapter

How to copy and clone BMW U Chassis BCP key data using the Autel IM608 together with the GODIAG BCP Adapter. Follow the complete step-by-step process for reading BCP key data and performing key programming on supported BMW U Chassis vehicles.

The process is straightforward but requires meticulous attention to the tool’s prompts and the physical connections.

 

Model example: 2024 BMW I7 BCP system

Copy a BCP key using Autel BMW ikey.

Preparing the Vehicle and Tool

Before diving into the software, connect the BCP adapter with XP400 pro. With the Godiag BCP clip adapter, you don’t need to disassemble the inner key shell. Just dril a hole to the inner key shell and connect the clip with inner key shell according to the points.

Step-by-Step Cloning Process

Accessing the BDC Function: On the Autel IM608, Selects the “BMW”, then chooses “System Selection” to allow the tool to automatically identify the vehicle’s system. Then navigates to “Immobilizer”  – “BCP Immobilizer” – Key Operation – Add key. Select Encrypted or Unencrypted key type.

Identifying the Vehicle: The tool prompts you to enter the vehicle’s VIN (Vehicle Identification Number). Confirms the VIN and selects the appropriate frequency—in this case, 433 MHz, a common frequency for BMW remote keys.

Choosing the Key Type: A crucial decision point appears: must choose between an “OEM key” (likely referring to a master/original key) or a “Autel Key.” In this instance, we chooses the “Autel Key” because he only has a single Autel key available to clone. It is important to note that a Autel key is often a valet or limited-access key. Cloning this type replicates its specific permissions and restrictions.

Generating the Dealer Key: The tool displays a warning: “This function can only generate the Autel key.” After confirming, places the new, blank key into the designated programming slot on the IM608 (or the connected key programmer). Then presses “OK,” and the tool begins generating the key data.

Successful Generation: Within moments, the IM608 displays “Success.” The tool asks if more keys are needed; declines and proceeds.

 

Verifying the Clone

With the programming complete, the true test is functionality. Takes the newly cloned key and performs a series of checks:

Door Lock/Unlock: open and close the door to test the remote’s locking and unlocking functions. The vehicle responds correctly.

Ignition/Start: Finally, he places the key in the vehicle and starts the engine. The car starts without hesitation, confirming that the clone process was a complete success.

 

Key Takeaways and Best Practices

Autel vs. Master Keys: Understand the difference between key types. Cloning a Autel key will produce a copy with the same limited access. If you need a master key with full access, you must clone from a master key.

Follow Prompts Exactly: The Autel IM608 provides clear, step-by-step instructions. Rushing or skipping steps—especially regarding physical connections and key placement—can lead to failures.

Verify Before Finishing: Always test all functions (remote locking/unlocking and engine start) before handing the key to the customer.

 

Conclusion

Cloning keys for newer BMW models is no longer a simple cut-and-program job; it requires advanced diagnostic tools, specific adapters, and a clear understanding of the vehicle’s security architecture. The Autel IM608, combined with the BDC3 adapter, provides a reliable and efficient solution for locksmiths facing these modern challenges.

www.obdii365.com

Possible to do BMW F series Coding with Autel JVCI?

Question:
Is possible do it BMW F series coding with this Autel IM608 JVCI interface?

Theres a diagram that explains connections for BMW f/g series.
Autel make an enet to obd2 adapter. Its like an esys cable. You need it. Then you also need a usb to ethernet adapter as the enet cable needs an rj45 ethernet connection. Plug usb to ethernet adapter into one usb port, plug jvci into other one.
Turn wifi off so jvci connects via usb only.
Do NOT use a charger when programming or coding on bmws. You need a dedicated power supply to provide bulk current capacity, not so much voltage. Car can draw 20 amps just sitting there with ignition on. Theres a bunch of routines they run through during the processes, anything could be randomly switched on thatll double or triple the current draw. A battery charger cant accommodate that, itll draw that demand from the battery and the system voltage will drop. Its this that causes corruption and damage to modules.
This is why you need a dedicated power supply.
 

 

 

Autel IM508S Read Ford F-150 BCM Dflash for Add Key

Autel MaxiIM IM508S/IM608 II Ford F-150 BCM Dflash reading for adding keys/AKL function is still there. Here are the tips to find Ford APB131 BCM Dflash reading locations.

 

2021-2023 Ford F-150 Blade Key System:

 

Here is an example of reading Ford F-150 2021-2023 BCM Dflash for adding keys/AKL with Autel IM508 and XP400 pro.

Procedure:

Menu path:  IMMO-Ford-Manual Selection- USA- F150- 2021 to 2023- Blade key- Control Unit- Immobilizer (CAN)-Key Learning- Read Dflash Data (via Programmer).

Autel will show you the connection diagram to BCM using APB131 adapter.

Connect BCM module with xp400 pro via APB131.

Read and save the BCM Dflash data to program key.

 

2022+ Ford Keyless System:

 

Autel IM508S/IM608 II Ford 2021-2023 Ford F-150 all keys lost function is found under System Selection if you’ve lost them due to updating.

If you go to the normal route after updating your device AKL has been moved to System Selection.

Menu path: System Selection- Keyless System- Keyless System (CAN) Type 1- Immo Learning- Read Dflash Data (via Programmer).

Then you can back up BCM Dflash data for adding keys/AKL.