Keydiy KD-X4 Read MQB48 MQB49 IMMO Data from KD Keys

Keydiy KD-X4 key programmer released new VAG immo software- supports reading VAG MQB48/ MQB49 5C/5D immo data from programmed KD keys.

 

1). Read MQB48 Immo Data from Programmed KD Keys

If you don’t have the original car key and only have programmed KD MQB48 keys, you can obtain the immobilizer file without reading the original key or disassembling the dashboard.
Once you have the immobilizer file, you can proceed with key generation and key learning.

Tools required:

Keydiy KD-X4 device

A mobile phone

A programmed KD MQB48 key

 

Procedure:

First, identify this key.

Go to Remote Function
Scroll down and select Keydiy Remote Function.

Select Get Immobilizer File from Remote Data.

Select Get Immobilizer file for MQB48.

Keep the KD MQB48 key inserted to the KD-X4′ induction coil.

Hit Read.

KD reads MQB48 file successfully.

Save the file.

Then you can proceed key generation with the immo file.

 

2). Read MQB49 5C/5D Immo Data from Programmed KD Keys

If you don’t have the original car key and only have programmed KD ZB/FGB keys, you can retrieve the service code without reading the original key.
Once the service code is read out, we can proceed to add new keys.

You will need a 5D key, a mobile phone and a KD-X4 device
First identify this key.

Go to Remote Function.
Scroll down and select Keydiy Remote Function.

Get the Immobilizer File from Remote data.
Get 5C/5D Service Code.

Place the KD smart key into the induction coil and read data.
Read service code successfully.

With the service code, you can generate dealer key and learn key.

What Device to Program VW Transporter T7 2025 Key?

This is the keyless  smart key from VW Transporter T7 2025. What device to program a new spare key?

It’s an ID49 Hitag pro 128bit nxp chip smart key.

It is identical to Ford.  It’s same as new VW Amarok with Ford system.

VW Transporter T7 utilizes the new-generation Ford Transit system, while Amarok uses the Explorer system.

The electric VW e-Transporter T7 runs on Ford Transit Custom architecture under the skin — so the key system is completely different from older VW vans.

The key can be programmed by dealer software only.

Though it is Ford system, it’s a VW-branded item.

Every manufacturer has different rules.

For the VW Transporter T7 (2025+), which is built on the Ford Transit Custom platform (same factory in Turkey, shared chassis, powertrains, and much of the electronics), key programming is typically handled with VW’s ODIS dealer software.

You need to order from the dealer to chassis and then use Odis, you can’t use FDRS, the same as you have order the new style Transit Connect to chassis.

Why ODIS (not FDRS)?

The vehicle is sold and supported as a Volkswagen, with VW badging, interior tweaks, infotainment customizations, and VW-specific software overlays. VW dealers use ODIS (Offboard Diagnostic Information System) for diagnostics, coding, adaptations, and key/immo programming.

FDRS (Ford Diagnostic & Repair System) is for Ford-badged vehicles with Ford VINs. It generally won’t communicate properly with a VW VIN or may have very limited functionality on the T7.

Cross-platform twins like the VW Amarok/Ford Ranger show that the “native” brand’s tool (ODIS for VW side, FDRS for Ford) works best for full access, especially for keys, immobilizer, and security-related modules.

 

Practical Notes

Dealer route: Go to a VW Commercial Vehicles dealer — they use ODIS + genuine VW keys (often pre-paired to the VIN). This is the most reliable/supported method.

Independent shops with full ODIS access (and online VW credentials for security features like SFD) can often do it too.
Aftermarket tools (e.g., some that support Ford Transit Custom) may have partial success on diagnostics but are unreliable or blocked for key programming due to security.

If you’re trying this yourself or with third-party equipment, success is not guaranteed without proper ODIS setup. For lost/all keys or new immobilizer work, dealer-level access is almost always required. Check with a VW dealer for your specific VIN.

 

 

Related items:

Topdon Rlink J2534 supports ODIS OEM software

VNCI 6154B compatible with original software

 

FYI: Some Honda uses GM system and we do it with Techline Connect what is GM dealer software.

EngineDance X5 Flash Volvo UD Truck EMS2.2 ECU

Read and write Volvo/Renault/UD/Mack truck ECU EMS 2.2 chip MPC5554 by EngineDance X5 ecu flasher successfully.
Model example: UD GH11 truck
Read eeprom and flash on bench mode.
Write eeprom and flash on bench mode.
Checksum correction by X5.
DPF and SCR Off ok.

 

Unlock Fiat Ducato MD1CS069 ECU by Flex

Fiat Ducato Bosch MD1CS069 ECU done with Magic Motorsport Flex smoothly.

Unlock ecu via boot glitch mode.

Solder short wires directly to the E-port.

Then read and write ECU on bench mode after unlocking.

NOTE: Watch out for different E pins on this ECU.

It’s info from MMS support that the exact picture is for 003, but 5 ohm also works for other ecus.
It works beautifully with a 5-ohm resistor.

Use original flex power supply and 5 ohm resistor. It works beautifully with a 5-ohm resistor.

 

EngineDance X5 Read and Write Hyundai D6GB ECU

EngineDance X5 ecu flasher read and Write Hyundai D6GB ECU successfully.

Hyundai/Kia Denso 3-plug chip: SH72543
Read ECU eeprom and flash on bench mode ok
Write ECU eeprom and flash on bench mode ok.

Checksum correction with X5.

DPF and SCR Off ok.

 

How to Unlock PSA MD1CS003 ECU with MMS Flex?

Magic Motorsport Flex boot glitch unlock new user report:

Citroen Berlingo 1.5BlueHDI 100hp.

Bosch MD1cs003 TC298 Psa ECU. Successfully done by Flex.

Autotuner requires main-in unlocking.
Finally unlocked by Flex boot glitch mode.
Very important – if you use too long cables will not work. Use as short cables as possible. To long boot wires will fail the procedure. Solder directly with short wires works fine (see image 5 the pinout instead the adapter. Try without flx4.1 adaptor and connect directly to the E port).

Then read and write on bench mode.

Flex MDG1 Boot Glitch Not Connection Solutions

Recently, many customers have been testing the Magic Motorsport Flex Bosch MDG1 ECU Boot glitch unlocking function. Some have succeeded, while others have failed because the device has not connection with the ECU.

To increase the success rate, the following points should be checked and noted:

 

1). First of all use ONLY FLEX power supply. 

2). If cannot glitch, test your Flex by cleaning the I/O connection (connection between Flex and Flexbox) and glitching worked.  If nothing is working, check your Flex!

3) Use as short cables as possible. Too long boot wires will fail the procedure. You need to make shorter cables it’s always was like that in any boot or jtag connection – to long cables interrupt to glitching process.

4). If fails many times with the Flex FLX4.1 cable, solder directly with short wires.

Try without FLX4.1 and connect directly to the E port.

Check and change wiring for E port. Check the resistance of your wiring. The boot pin also looks very thick! It may not be making good contact, or the boot pad could already be completely gone.

5). Bridge resistor gap with solder and remove the resistor (0.1 ohm).

 

6). Reinstall flex software and use a different WiFi (One of Flex users had issues with flex. It’s killing the internet; use different WiFi it works).

Also swap out to different power and ground leads, these are known to break near the ends, this protocol draws a lot of current so a weak cable could cause issues.

 

7). Call MMS support.

Flex Unlock BMW MG1CS049 ECU Boot Glitch Mode

Magic Motorsport Flex boot glitch unlock new user report:

No cars sitting around in workshops for days on end. Worked flawlessly, hopefully many more to come MG1CS049 - 2024 BMW G82 M4.

Boot glitch unlock.

Then read and write on bench mode.