How to Install VAG Driver for VXDIAG VCX FD?

The new generationVXDIAG VCX CAN FDJ2534 scanner previously only supported GM and Ford/Mazda models. Good news—the device is now also compatible withVAG software. Here we explain how to activate the VAG authorization for VCX FD.

 

 

1.Activate License

PurchaseVXDIAG VAG Software License $35

Provide your VCX FD serial number to us activate software license manually.

 

 

2. Install driver

Download the correct VX Manager V1.9.1 for VCX FD.

 

 

InstallVW ODIS 6154driver and keep driver up-to-date.

3. Install Software

VXDIAG VAG license does not come with odis software by default.
Contact your supplier to download and install the software.
The VCX FD is compatible with odis-s 25.3 and odis-e v18 software.

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Keydiy KD FGB25 5D Key No Frequency Problem Solution

Problem:

Generated and madeKeydiy KD FGB25MQB49 5D dealer key withKD-X4successfully. But cannot detect frequency with KD-X4. Tried read frequency with xhorse device, still no frequency. Any solution?

 

Solution:

Need to program andlearn key in car first.

The frequency can only be detected after the programming and key learning in car are completed.

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Autel IM608 Failed to Detect Xhorse MQB Key Solution

Problem:

Skoda Octavia 2016 add key Full MQB ! I have the all the data pulled out.Autel IM508can’t make the dealer key seems it is not accepting thisXhorse MQB key. It says keyless but i assume it is the right one. It is a bladed key. Anyone used this key or generated any other key for this car?

 

 

Solution:

You cannot generate an Xhorse key with Autel. Likewise, you cannot generate an Autel key with Xhorse.

Xhorse MQB keys can only be precoded with Xhorse tools.
Use Xhorse tools or change remote brand. Use Keydiy remote or OEM.

Don’t use xhorse remote with Autel. KD remote works fine, but try to do dealer key input cs manual.

Xhorse stopped accepting third-party companies to use their remotes.

You can make xhorse dealer key only with xhorse hardware.
Switched to KD, aftermarket or OEM key.
People use KD remotes without problem.

Check:KD ZB smart remote

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Toyota Corolla Cross 2024- 2026 Bypass Cable Connector Location

If you’re working on a 2024, 2025, or 2026 Toyota Corolla Cross and need to read immobilizer data or erase keys without adding a new key, you may need to access the vehicle’s bypass connector.

Where to find the bypass location on this model. The process is straightforward and requires no special tools.

 

Step-by-Step Instructions:

1. Open the glove box– Start by opening the passenger side glove box.

2. Release the latches– There are two latches holding the glove box in place. Release them both.

3. Drop the glove box down– Once the latches are undone, lower the glove box completely to access the area behind it.

4. Locate the top plug– Behind the glove box, you will see a series of connectors. The one you need is thetop white connector.

5. Connect the bypass (Toyota 30 pin cable)– Remove the top plug and connect your bypass module to this port.

This method allows you to read the necessary data and erase keys without needing to add a new key. Once the bypass is connected, you can complete the job as usual.

 

Quick Tip:
Make sure the vehicle is a 2024–2026 Toyota Corolla Cross, as the connector location may vary on other models or years.

 

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Launch X431 Update VAG SFD Unlocking 2FA Multifactor Authentication

Important Security Update for Unlocking VAG SFD security gateway ofLaunch X431 diagnostic scanners.

The Volkswagen Group (VAG) has introduced updated security protocols for unlocking protected functions via SFD (Vehicle Diagnostic Protection).
To comply with these standards and prevent any service interruptions on Volkswagen, Audi, Skoda, or Seat vehicles etc.,Multifactor Authentication (2FA) via Google Authenticatorisnow MANDATORY.

 

Start Date:
May 25, 2026

Affected Systems and Software:
Every diagnostic device used to activate or unlock VAG SFD gateway.

 

The New Requirement

• Multifactor Authentication (2FA) is now MANDATORY as part of the unlocking process and has been added via Google Authenticator.
• Specifically, a temporary 6-digit verification code must be entered for each SFD unlocking. Access to the ECU is only granted after successful verification.
• Users who have not yet linked a device will be required to complete a one-time setup during the unlocking process.

 

Step-by-Step Guide:

1.Start the SFD-Unlock Procedure
2.[Initial setup only] Scan the QR shown using the Google Authenticator app.
3. The Google Authenticator app shows a generated 6-digit verification code. The code is temporary.
4. Enter the verification code into the device used for SFD-activation.

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Ford 4D63 40bit vs 4D83 80bit Transponder

If you work with Ford or Mazda vehicles, you’ve likely encountered two common transponder chip types: theID83 (4D-DST80)and theID63 (4D-DST40).Here we will make a comparison between 40-bit and 80 bit transponder chips in Ford PATS systems 2005-2011.

 

Why Convert Instead of Generating?

Most modern key programming tools allow you to generate a new chip of any type. However, there are situations where you might already have a specific chip on hand — for example, a DST80 — but your vehicle requires a DST40. Instead of discarding the chip or searching for a different blank, you canreconfigure it manually/automaticallyusing the right device.

This is especially useful for locksmiths and auto technicians who buy chips in bulk and want maximum flexibility.

 

1. QUICK GUIDE
Ford 40-Bit ↔ 80-Bit (When the Key WON’T Program)
For technicians just starting out who get stuck without knowing why

The Problem (More common than it seems)
In certain Ford models between 2005 and 2011 (Especially the Ranger and F-150):
– The key appears to be the correct one
– The procedure is correct
– But it simply won’t program

DIAGNOSTIC SIGNALS

• The key turns but the engine doesn’t start
• Security light flashes rapidly or stays on
• The scanner does not recognize the key as programmed
• Error appears during programming or it doesn’t complete
• Another key works without problems

Often, it is NOT the equipment.
It is NOT the procedure.
It is the transponder’s bit type.

 

A Key Fact Few People Know:
40-Bit → Reads as 4D (63)
80-Bit → Reads as 4D (83)

Typically, H92 keys or equivalents are used.
However, the system sometimes requires the other bit type.

 

2. Practical Solution:
Switch from 40-bit to 80-bit.
Or from 80-bit to 40-bit.
There isn’t always a logical explanation, but it works in practice.

 

1. The key won’t program
   ↓
2. Reads the transponder
   ↓
3. Verifies 40 Bit or 80 Bit
   ↓
4. Converts the necessary bit
   ↓
5. Tests and verifies programming
   ↓
6. Solution completed

	40 BIT 4D (63)	80 BIT 4D (83)
Identification in Xhorse	4D (63)	4D (83)
Common Use	Most frequent	Less frequent
Compatibility	Not compatible with 80 Bit	Not compatible with 40 Bit
Ford Systems (2005–2011)	Some models	Some models
Solution	Convert to 80 Bit	Convert to 40 Bit

Chips Explained

BEST PRACTICES BEFORE REPLACING COMPONENTS

• Always verify the bit type (40 or 80).
• Confirm the transponder with a reliable tool.
• Try converting the bit before buying another key.
• Ensure stable batteries and good connection are used.
• Do not install new parts without first ruling out bit incompatibility.

 

3. STEPS (Using Xhorse Key Tools, i.eKey Tool Max)
Bit Conversion Without Re-reading the Key or Transponder
1). Go to "Clone Transponder”
2). Select "Read Transponder”
3). Tap "Edit” (bottom center)
4). Select "DST+”
5). Scroll down to the very bottom
6). P30 must be set to0000
DO NOT re-scan the key or transponder
7). Tap the zeros and enter:
0046 = Convert to 40-Bit
0846 = Convert to 80-Bit
. Tap "OK”
9). Tap the pencil icon (on the right side)
10). You should see: "Write Complete”.

 

Can You Convert Back?

Yes. The process works in reverse. If you need to turn a DST40 chip back into a DST80, follow the same steps but change the value from 0046 back to 0846 (or whatever your tool requires for DST80). The Xhorse Key Max allows two-way conversion between these two chip types.

 

 

STEPS (Using Keydiy Key Tools, i.eKD-X2/KD-X4)

1). Read Transponder

2). Select "Chip Editing”

3). Select "DST+”

4). KD will will give you options: select "Convert to DST40” or "Convert to DST80”

5). Hit "Agree”

6). Exit and auto detect transponder again.

Keydiy tools also allow two-way conversion between these two chip types.

 

Final Verification
Return to "Clone Transponder”
Read the transponder again
Confirm that it now shows as 4D (63) or 4D (83), depending on your requirements.

 

 

Key Tip for Future Programmers
If a Ford key fails to program:
DO NOT buy a replacement just yet
Check the 40 / 80-Bit setting first.

 

Important Tips

Not all chips are rewritable. This method works with cloneable DST80 and DST40 chips. OEM or locked chips may not allow manual overwriting.

Write, don’t Convert. Some tools have both a "Convert” and a "Write” function. For manual editing, always use Write after changing values.

Generate as an alternative. If you don’t have a chip to convert, the Xhorse tool can also generate a brand-new DST40 or DST80 chip from scratch. Conversion is just one option.

www.obdii365.com

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How to Solve OBDSTAR G3 Failed to Decode Skoda EDC17C74 CS Code

Here comes a problem:

It’s a 2017 Skoda MQB model with an EDC17C74 ECU. All keys have lost. A customer was trying to make key withOBDSTAR X300 Classic G3programmer on bench.

He connected the ECU to the G3 on bench and read the EEPROM successfully, but the strange thing is that he can also read the FLASH successfully, but when it reads the sectors, it goes super fast, and the BLUE LED on the MP001 barely flashes to indicate communication with the ECU. It’s like the ECU is being read incorrectly, and when he used the special "decrypt immo data” option, the CS is really strange.

 

 

Here is the clue.

Edc17C74 and CP74 are Immo 6 and have the SHE sector.It reads ok, but these ECUs have SHE sector security hardware extension. No tool in the world can decrypt it and no way to decode it. You cannot read CS code.

 

What is IMMO6 SHE?

IMMO6(or WFS6) refers to the 6th generation of theVolkswagen/Audi Group (VAG) immobilizer system, whileSHEstands for Secure Hardware Extension—a hardware-based security layer used in modern ECUs. Part of immo data is stored not in eeprom but in SHE – which you can’t read.

The SHE (Secure Extension Hardware) module implements advanced AES-128 encryption and dynamic challenge-response authentication, making it highly resistant to hacking or unauthorized ECU cloning.

 

 

How to Program MQB All Keys Lost with IMMO6 SHE ECU?

Solution 1:

Order dealer key for 120€ and program with online software ODIS.

 

Solution 2:

Order dealer key and use mlb tool to add key.

For example:

Use the dealer key to read immo then leave dealer key with CS code. Key already has sync then you can make more keys if you want.

Order a dealer key, read immo data on the dealer key withVVDI MLB Tool (MQB adapter)orKD-MP tool, and make dealer key and learn keys.

 

Solution 3:

Make ecu immo off, and when add on calculation time another car cs code to fill the sync calculation and make key and oem ecu immo off.

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Program 2025 Nissan Magnite Smart Key with OBDSTAR G3

OBDSTAR X300 Classic G3programmed 2025 Nissan Magnite proximity smart key successfully.

 

Go to Nissan, select the model and Proximity function.
Select Program Keys.
This function requires network connection.

 

Follow 4 steps to program keys.

 

Press Start button to execute key programming function.

1. Configure system
Executing this function will erase all the keys of the vehicle.
Only 2 new keys can be programmed each time.

Insert the original key into the slot.

2. Read current key number
G3 read current number of key: 1.
Insert new smart key into the slot.
2 keys detected.

 

 

3. Verify PIN Code
G3 asks to enter a 32-digit PIN code.
This code must be obtained from a 3rd party provider using the VIN.

4. Program keys
Insert the proximity key 1 to be programmed into the slot.
Program key 1 successfully.

Insert a new proximity key to be programmed into the slot.
Program 2nd key successfully.

 

Test both keys.

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2015–2020 Chevy Tahoe Smart Key Not Detected Solution

If you own a 2015–2020 Chevy Tahoe (or Suburban) and your push-to-start smart proximity key has stopped working — or you simply need to add a spare — the issue is often resolved by programming a new key. Here we will show the steps to add a smart key, including where to place the key and how to handle the 12‑minute waiting period usingAutel MaxiIM IM508key programmer.

 

Before You Begin: Locate the Sensing Pocket

The most critical first step is knowing where your vehicle’ssensing pocketis.
In the Chevy Tahoe (2015–2020), the sensing pocket is typically located inside the center console or at the bottom of the front storage area.

• Why it matters:If your key fob battery is dead, inserting the key into the sensing pocket allows the vehicle to detect it.

• For programming:The new key must be placed in this same pocket when the programmer instructs you to do so.

The example uses a6‑button smart key fobwith proximity/push‑button start.

Step 1: Connect the IM508 and Identify the Vehicle

1. Connect the IM508 to the vehicle’s OBD2 port.

2. Turn the ignitionon(press the start button without pressing the brake, or use the original key if available).

3. On the IM508, navigate:

   • America→VM→Automatic selection

   • Confirm the vehicle:Chevy Tahoe 2015(the procedure applies to 2015–2020).

Step 2: Enter the "Hot Function” Menu

From the main menu:

• SelectHot Function→Add Smart Key Guided.

The programmer will ask you to switch the ignition off and then on again. Follow the on‑screen prompts exactly.

 

Step 3: Read the PIN Code

The IM508 will now read the vehicle’sPIN code(requires an internet connection). This typically takes about one minute.
Once the PIN is successfully read, the tool will offer toclear any DTCs(diagnostic trouble codes). Do this before proceeding.

 

 

Step 4: Learn the New Key

1. When prompted, clickOKto begin learning the key.

2. Place the new smart key into the sensing pocketexactly as shown/described.

   • In the walkthrough, the technician noted that sometimes you musthold the key in placefor the vehicle to detect it during programming.

3. ClickOKon the programmer.

Step 5: The 12‑Minute Wait

The vehicle’s security system requires a12‑minute waiting periodduring programming.

• The IM508 will display a progress percentage (e.g., 0% → 80% → 90%).

• Do not interrupt the process. You can disconnect the programmer briefly if needed, but reconnect before it reaches 100% to finalize.

 

 

Step 6: Completion and Testing

After the wait:

• The tool will confirm:"Key programmed.”

• Remove the key from the sensing pocket.

• Test the remote functions (lock/unlock) and push‑button start.

In the original walkthrough, the procedure successfully programmed a replacement smart key for a 2015 Chevy Tahoe — which applies directly to model years2015 through 2020, including the Chevy Suburban.

Important Notes

• Original key condition:If the original key’s remote doesn’t work, you can still use it to turn on the ignition (by placing it in the sensing pocket).

• Battery dead?The sensing pocket allows detection even without a working fob battery.

• Internet required:The IM508 needs an active internet connection to read the PIN.

• Patience:The 12‑minute wait is mandatory and cannot be bypassed on these GM vehicles.

 

Final Verdict

Using theAutel IM508(or similar high‑end programmer), adding a new smart key to a 2015–2020 Chevy Tahoe is straightforward if you follow the guided steps — especially knowing the sensing pocket location and respecting the 12‑minute security delay. Once programmed, both remote functions and proximity start will work normally.

www.obdii365.com

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Launch PROG5 and X-prog3 Difference

Launch X431 is going to roll out the new PROG5 programmer adapter. What’s the difference between the new Launch Prog5 and X-Prog3 programmer?

Let’s preview their differences.

 

Launch X-431 PROG5 vs X-Prog3

Feature	Launch PROG5	Launch X-PROG3
VW / Audi IMMO3/4/5 Key Programming	Supported	Supported
VW 4th Gen Instrument Cluster All-Keys Lost Reading	Supported	Supported
Audi 5th Gen Steering Column Chip Read/Write	Supported	Supported
MED17 Engine OBD Reading	Supported	Supported
VW 4th Gen UDS Engine Replacement	Supported	Supported
VW / Audi MQB Engine / Gearbox / Steering Column Replacement	Supported	Supported
VW / Audi 5th Gen / MQB Gearbox FLASH/EEPROM Read/Write	Supported	Supported
VW / Audi Bosch Engine Clone	Supported	Supported
VW / Audi Siemens Engine Clone	Supported	Supported
2014+ UDS Engine Replacement (Original Engine Not Required)	Supported	Supported
VW MQB 5C/5D Key Programming (Add key)	Supported	No
VW Audi SIMOS18 Series Clone	Supported	No
VW V850 Series Instrument Data Read & Clone	Supported	Less support
VW RH850 Series Instrument Data Read & Analysis	Supported	Less support
Volkswagen MQB Instrument Cluster Mechanical/Smart Key All-Lost Support (Read/Write Parse Engine/Gearbox Data Types)	Supported	Less Support
Mercedes Key Matching (FBS3)	Supported	Supported
Mercedes Engine/Gearbox Erase (FBS3)	Supported	Supported
Mercedes Engine (FBS4)	Supported	Supported
Mercedes Gearbox Clone (FBS4), 2 types 7-speed, FDCT, 9-speed	Supported	Supported
Mercedes W164, W169, W209, W211 Password Calculation in All-Lost Situation without Gateway (FBS3)	Supported	Not Supported
Mercedes Multiple EIS/EZS Cloning	Supported	Partial Support
Mercedes FDCT/VGS4 NAG2/VGS NAG3 Clone (FBS4)	Supported	Not Supported
Mercedes DSM (FBS4)	Supported	Not Supported
Mercedes Add Key with Password Calculation (FBS3)	Supported	Supported
Mercedes All-Lost Key Password Calculation (FBS3)	Supported	Supported
BMW (CAS1, CAS2, CAS3, CAS4, FEM/BDC)	Supported	Supported
BMW G Chassis Key Matching	Supported	Supported
BMW Engine ISN Code Read	Supported	Less Support
BMW E Chassis 8HP Gearbox Erase	Supported	Supported
BMW E Chassis 8HP Gearbox Clone	Supported	Supported
BMW FRM Repair	Supported	Supported
BMW F Chassis 6HP Transmission Clear / Clone	Supported	Supported
BMW F/G Chassis 8HP Transmission Clone	Supported	Supported
BMW F/G Chassis 8HP Transmission Clear	Supported	Supported
BMW Engine Replacement	Supported	Supported
BMW Bosch Engine Clone	Supported	Supported
BMW Siemens Engine Clone	Supported	Supported
Porsche 2011-2017 Key Matching	Supported	Supported
Porsche Front/Rear ECU Clone	Supported	Supported
Porsche Engine, Gearbox ECU Clone	Supported	Supported
Porsche Battery Repair	Supported	Supported
Various Models Bosch Engine Clone	Supported	Supported
Various Models Siemens Engine Clone	Supported	Supported
Various Models Transmission Clone	Supported	Supported
Various Models DELCO/DENSO/Marelli Engine Clone	further support	Supported
Encrypted Chip RH850 Read/Write	further support	Supported
BMS Chip Read/Write Function	Supported	No
Support ID48/96, ID46 Key Chip Clone Function	Supported	No
ECU Data Checksum Function	further support	Supported

 

In sum:

Launch X-PROG3cannot be used independently. It requires a tablet or a PC adapter box.

Launch PROG5integrates the functions of X-PROG3, PC adapter, ECU programmer, and key programmer.It can be used with a tablet or directly connected to a computer to run PC software.

• PROG5 comes withECU cloning PC softwarefor reading/writing and cloning engine and transmission ECUs on PC.

• When used with a tablet, it includesIMMO PROG softwarefor reading/writing and cloning engine and transmission ECUs.

• Built-inkey programmer function– can read key information, generate keys, and unlock keys.

• Support for European vehicleKey matching,Immobilizer module erasing andImmobilizer module replacement
• Supports more ECU and TCU cloning models than G3.

New functions added to PROG5:

• Add key VW Audi PorscheMLBsystem

• Add keyVW MQB49 / 5C / 5Dsystems

• VWV850 / RH850– dashboard read/write function

• VWMQB platform – all keys lostfunction

• BMW engine – ISN read function (model support added)

• Mercedes-Benz transmission –OBD cloning, ISM cloning

• 46 / 48 chip cloning

• more…

 

 

The Launch PROG5 is coming soon. Keep an eye on our websitewww.obdii365.com.

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