Keydiy KD-X4 Update VAG 5C 5D Add Key Function!!!

 Good news! Keydiy VAG 5C 5D function is officially published on 11th, January 2026.

 

New Updates:

• VW Audi Porsche 5C 5D add key (add key only, reading original key data and learn key)
• Full series BDC2/BDC3/LCD/U Chassis BCP key cloning (reading original key data to copy key)

 

Compatible with Keydiy KD-X4 and KD-MAX.

 

NOTE:

VAG 5C 5D function does not require KD-MP tool.

Directly read original key data and learn key with KD-X4.

If use KD-MAX, read key data with KD-MAX and learn key with KD-MATE.

Requirement:

MQB49 5C/5D

• Requires MQB license activation (share the same license as MQB48). Don’t need points when adding keys.
• 5C: use KD ZB smart key or original key
  5D: supports original keys only
  5C and 5D support original second-hand keys

 

BMW G series encrypted BDC2/BDC3 keys:

• BMW encrypted key cloning function requires BMW G function license activation.
• Don’t need points when generating KD FGB remote.
• It takes 180 points to generate an original G key.

VAG 5C 5D and BMW G series encrypted key cloning interface boards are not released yet.

Users can also use wire soldering method. Keydiy does not have a direct data-reading adapter; you need to modify KD’s adapter yourself according to the diagram below.

Check the KD 5C and 5D key wiring diagram here:

Keydiy KD-X4 KD-MAX VAG 5C 5D Key Wiring Diagrams

BMW encrypted BDC2/BDC3 key cloning procedure is the same as that of unencrypted keys.

Keydiy KD-X4 Copy BMW G series BDC2 Encrypted Display Key

As for VAG 5C 5C add key function, follow the procedure below:

• Read original key data
• Generate dealer key
• Learn key

After reading original key data, it will generate a service code.
The service code is required when learn key in car.

You can obtain immo from working key and read synch afterwards
If you have the CS which you’ll be able to read from the key using this tool, you can get the synchro from the working key.
CS gives the ability to read synchro from the key.

How to Tell Audi Type 5C or 5D Key by Key Shell?

 How to distinguish whether an Audi key is type 5C or 5D? Here obdii365.com shares an easy guide to tell Audi 5C and 5D key from its key shell.

Remove key shell, check the interior of the key shell and observe this part:

if there are only three lines of symbols, it indicates a 5C key;

if there are four lines of symbols, it indicates an encrypted 5D key.

For 5D keys, users must use original key to add a spare key. If it is 5D with UWB function, you will need an original high-version key.

 

Note: The tips only apply to Audi 5C/5D vehicles. It may not work on VW 5C/5D vehicles.

Users can also easily read key type information by OBD programmers, i.e Keydiy KD-X4, it will show you key chip type and key status.

Keydiy KD FGB57 Remote Not Found Solution

 Problem:

Keydiy KD-X4 cannot read a KD FGB57 remote. It says remote not found.
Xhorse Key tool max pro failed to read it either. It says remote locked and unclonable.

Solution:

It is normal. Ignore it.

Go ahead BMW BDC3/BCP cloning function and generate FGB57 remote.

AutoTuner Update JLR MG1CS201 Remote Unlock

 The ultimate in British luxury is now within reach of your Autotuner Tool! Autotuner is pleased to announce support for the Bosch MG1CS201 ECU tailored for Jaguar Land Rover.

You can now work on the flagship Range Rover (2022+) and Range Rover Sport (2022+) equipped with the powerful 4.4 V8 P530 engine.

Technical Note: This protocol is Bench After Mail-in Unlock. This means the ECU must first be unlocked at Autotuner headquarters before you can proceed with Read/Write operations on Bench.

Ready to unleash the full potential of these V8 beasts?

Key Information

• Type: Engine Control Unit (ECU)
• Mode: BENCH NR (After Mail-in Unlock)
• MCU: TC298
• Read time: 3 min
• Write time: 1 min
• Checksums correction
• Backup creation

Compatibility List*

Models: Range Rover – 2022 / Range Rover Sport – 2022
Engine: 4.4 V8 P530

How to Add BMW BDC3 Encrypted Key with Keydiy KD-X4?

 Good news! Keydiy now supports BMW G series BDC3 encrypted key cloning via reading original key data method. Here is the instruction on how to add a spare BDC3 locked key using Keydiy KD-X4.

 

Tools used:

Keydiy KD-X4 (or KD-MAX)

Original BDC3 encrypted key

New original BDC3 key or KD FGB58 remote

New dedicated wiring harness (for encrypted BDC3, VAG 5C 5D key data reading)

KD G Function license activation

Requirement:

This function requires KD-X4 firmware V1.52 or newer version.

How to update Keydiy KD-X4 firmware to V1.52?

In App Home page, click Update- Update KD Device. Check latest version and update firmware.

V1.52
Add the function of reading and writing encrypted BMW keys.

How-to:

Go to Remote Function- Smart Key Clone- BMW BDC3/BCP Smart Key Clone- G Chassis/BDC3 Clone

Solder wires to the original key according to the wiring diagram.

We have soldered the original car key properly.
Click Read to read original key data.

Connect the wiring harness adapter to KD-X4 main unit.
Read original key data successfully.
Save file.

Now start generate key.
Before generating the key, remove the wiring harness with KD-X4.
Put the KD FGB remote PCB to the KD-X4’s coil.
Now start wireless generation.

Select generating KD-FGB remote.
Generate remote successfully.

Then you can install this key into the original factory shell,

Keep in mind, don’t use both keys in the car. Keep them separate.

How to Tell BMW G BDC2 BDC3 Key by PCB or Shell?

 As titled, how to tell BMW G series BDC2, BDC3 or BCP key by  PCB or shell?

How to determine whether a BMW G-series BDC key is encrypted based on the key itself or its appearance?

BDC2 keys are relatively easy to identify: if the key’s circuit board has a long encrypted chip, it is a BDC2 key. All BDC2 key are encrypted.

Many device will add key BDC2 by removing BDC2 module and make key on bench. CGDI K2 now will copy BDC2 key via reading data from the original key. No need to remove BDC2 module anymore. Keydiy and more tools will follow this solution.

 

How to determine whether a BDC3 key is encrypted?
Open the key shell and check the marking at this location on the casing. If there is ‘Hungary’ letter, it indicates an unencrypted key. If there is no marking or if it is marked “Mexico,” it indicates an encrypted key.

How to determine whether a BCP key is encrypted?
Open the key shell, and you will find a laser marking here. If it displays “CG,” it means the key is a low-spec, unencrypted version. If it displays “CA,” it means the key is a high-spec, encrypted version with UWB functionality.

CGDI K2 now will copy all versions BDC2 BDC3 BCP keys. Keydiy will also release this function.

Flex Cannot Read 2021 DCM7.1A ECU via OBD Solution

 Magic MotorSport Flex failed to read 2021 Opel Vivaro Delphi dcm7.1a ECU via OBD. Are these not able to be done?

Solution:

OBD is not the best solution for after 2021. 2022 onwards problem with obd.
Some users also reported they had problems with Flex on 2021 DCM7.1A OBD.
Do DCM7.1A in BOOT mode. Go for boot its more safe in DCM7.1A. Only do obd if you have a full boot backup. They can die obd mode. Sometimes they can be repaired boot mode, bit sometimes the eeprom data is destroyed.

Sometimes VR not available with flex then need boot. Or use other tool like Autotuner via obd.

Or open and boot with mms repair file and all OK again.

Iveco Daily 93S56 All Keys Lost with Orange5 + Xhorse Key Tool Plus

 How to program a key for Iveco Daily for Bosch 41221184 immobox, all keys lost, with secured Eeprom 93S56:

 

Xhorse VVDI Key Tool plus fails to read eeprom 93S56 correctly and process it in Immo Data Tool.

Key Tool Plus does not read this chip sucessfully. With eeprom adapter, it reads security bit and eeprom but the file is not correct and gets not loaded in immo data tool.

Here we have the solution!
Connect the Eeprom 93S56 to your Orange 5 programmer with Soip 8 Clip adapter to STD Port.

Open Orange5 software:
1. Select eeprom Type. Search for MicroWire 93S56 Eeprom.
2. hit Test Insertion, check if all pins are connected well!
3. hit Read Protection
4. hit Clear Protection
5. hit READ EEPROM

6. Load the read eeprom in to your key tool plus and open the file with Immo Data tool.
Here you have: Pin, key ID1, ID2, ID3.

Then you can make dealer key with key tool plus.

Autel Ultra VCMI Battery Replacement

 There’s several tutorials out there about replacing the main battery (in the Autel MaxiSys Ultra scan tool), but almost nothing about the battery in the VCMI itself. Here is the guide to replace the Autel VCMI VCI battery.

 

Possible reasons for replacing the battery:

• The VCMI VCI battery is faulty.
• Reduced battery life due to years of use and wear.

 

Disclaimer: This is simply a record of user experience. Opening the casing may void the warranty. We are not responsible for any resulting issues. Proceed at your own risk.

 

For example:
No complains with Autel Ultra quality. But the VCMI has recently taken a real nose dive. But for four years of use, abuse and getting hoods shut on it. So get the battery replaced.

 

Tools required:

• A 2.5mm hex socket
• A 2.0mm hex socket
• Packet screwdriver
• A replacement battery

Instruction:

For reference, we call the end of the VCMI with the hanging hook as the top. The scope/BNC end will be the bottom. All the exterior work will be done at the top. Start with these four recessed 2.5mm screws:

Gently work the rubberized bumper off the plastic clips and you’ll find two 2.0mm screws.

These screws simultaneously hold the upper retainer to the metal case, and also hold the hanging hook in. If your hook falls out on the floor, not to worry, it slides right back in.

Then it’s down to four more 2.5mm recessed screws and the upper retainer pops off.

From there, the guts of the Autel VCMI slide right out the top.

You can buy a replacement battery from ebay or aliexpress. Googling with ‘SP515783’ and order battery (Li-ion Battery 3750mAh 3.8V 14.25Wh & 9 wires).

 

The replacement so similar to the original, I have to wonder if it’s an OE or OEM part:

The battery itself is only held in with double-sided sticky foam. Just pried it out with a pocket screwdriver.

Flip the guts of the VCMI over to find the battery cable connection, covered with a bit of fabric tape. Pops off with a pocket screwdriver blade.

Connect up your new battery, tape it down and reverse the removal process. Be aware, the replacement battery came completely discharged out of the box, and would not power the VCMI on immediately after installation. Let the new battery charge afterwards.

EoneBoss TLK1 Cannot Detect Toyota Smart Key Solution

 EoneBoss TLK1 Toyota smart key unlock tool cannot recognize the Toyota key?

Solution:

1. Confirm the key type
TLK1 only supports original factory Toyota/Lexus smart keys with the following chip types: 8A / AA / BA / B9 / B8.
Other key types will display “Incorrect Key Type,” which means the key is not supported.

2. Place the key in the correct position

The smart key communicates with TLK1 through a built-in 3D inductor.
For proper detection, The 3D inductor of the key must be placed inside the induction coil of the TLK1.

As shown in the picture below, if the key is placed incorrectly, the 3D inductor will be outside the TLK1 induction area,  and the tool will not be able to recognize the key.
Correct key placement is essential for successful detection.