Add 2021 VW ID4 MQB49 5D Key with Keydiy KD-X4 via Clip Adapter

User report:
Added a VW ID4 2021 MQB49 5D spare smart key with Keydiy KD-X4 successfully.

5d key added no problem, no sfd unlock required, all went smoothly.

For my first one, used a genuine 5D key, only downside was had to open up new key to write data. If you use genuine key this is the only way.

Using a universal 5D 5C clip adapter to read key data.

Keydiy also KD FGB25 5D key. These work well, but KD FGB25 doesn’t have UWB, so door touch functions wouldn’t work if the car has UWB, but 2021 may not have UWB. I did a 2024 Cupra the other day with the same style key but had UWB. Customer didn’t mind as they wanted a cheaper spare but I did tell them prior to doing the job.

How to Add NCF29Ax Series Smart Key with Keydiy KD-X4?

Keydiy KD-X4 and KD-MAX update NCF29xx smart key synchronization function (read original key data to copy/add smart key) on April 17th, 2026.

Keydiy will read original key data for the following smart key chip types:
NCF29A1
NCF29A4
NCF29A2
NCF2953
NCF29A3
NCF2954

 

Device used:

• Keydiy KD-X4 or KD-MAX key tool
• Keydiy ZB71 smart remote (Must write data into the KD ZB71 remote!!!)
• Keydiy #13 NCF29xx interface board
• Original key

NOTE:

Update the KD device App to the latest version.

It is not a simple read-and-copy procedure. Some keys require removing the chip and solder onto the KD interface board to read OEM key data.

Don’t need to generate remote program before reading key data.

 

Procedure:

Step 1: Remove the chip from the original car key.

Disassemble the original smart key and remove the NCF29Ax chip from the OEM key.

Step 2: Solder the chip onto the KD #13 NCF29xx adapter

Connect the KD #13 adapter with KD-X4 or KD-MAX.

Step 3: Read chip data
Go to Remote Function- Smart Key Clone- Universal Smart Key Synchronization.

Synchronize the remote data and key ID of the original NCF29Ax single chip to KD ZBX and ZB7 series smart key.
It can be used directly on the vehicle without programming.

If don’t have KD #13 adapter, follow the wiring diagram to solder wires to the key circuit board.

Read Chip Data.
Save chip data.

Remove the #13 adapter from KD-X4.
Resolder the chip back to the original key.

Step 4: Write the chip data onto the KD ZB71 remote
Connect the KD 29AX and 29A7 series smart card using 6-pin programming cable.

Connect the programming cable with KD-X4 device.

Generate dealer key.
Generate dealer key successfully.

Install the key shell to the KD ZB smart remote.

Don’t need to program key in car after writing KD remote.
Test the KD and OEM key’s function.

Xhorse Key Tool Max Pro Clone Mazda CX-30 2020 XM38 Smart Key

Xhorse VVDI Key Tool Max Pro clone Mazda CX30 2020 smart key using XM38 key successfully.

Go to Special Function-> Copy Proximity Remote->Mazda 6A smart key clone.

Was it just cloning, or was programming required for the Xhorse key?
There was no programming involved. He simply pre-coded the Xhorse XM38 key using a Mazda file and then cloned it. Just clone it and go get that money.

 

NOTE:

Be careful cloning proximity keys that way. Make sure you tell the customer you’re cloning it. Issues can arise when they in the car together, etc. Always best to do it the proper way adding the key into the BCM as it should. Blessings!

What Tool to Program 2023 Toyota Yariss Cross 8A H All Keys Lost?

The 2023 Toyota Yaris Cross, particularly the European version with a mechanical key and immobiliser box, presents a unique challenge for locksmiths. While many modern vehicles can be handled with standard tools, this model has proven difficult, with some locksmiths refusing the job and others failing outright.

 

Initial Attempts and Failures

First attempted to use an Autel MaxiIM IM608 programmer. Initially, we tried the OBD method, which provided an in-code and out-code, but programming failed. Although Autel indicated the procedure was possible, in practice it simply didn’t work.

Next, removed the immobiliser box and attempted a direct connection using a G-box. However, we quickly discovered a physical incompatibility: the G-box connection requires two pins on the first line, but the Yaris Cross immobiliser box has only one. This confirmed that the vehicle uses a newer generation of the Toyota ID8A-H immobiliser, which cannot be accessed via the traditional connection.

Also tested other programmers, including Lonsdor K518 Pro and Abrites, but all failed.

 

The Solution

Rather than continuing to struggle with programming a new key from scratch, we suggest purchasing a second-hand immobiliser box that already had one transponder programmed. Using Autel, we then synchronised this replacement box to the vehicle.

A critical note for hybrid models: you must synchronise not only the engine ECU but also the hybrid control ECU. Once both are synchronised, the car starts without issue. No modules need to be replaced, and if you have access to Toyota online services, you could also buy a brand-new immobiliser box and programme it directly.

 

The Real Challenge: Dashboard Removal

The most time-consuming part of the job is accessing the immobiliser box. Like other Toyota Yaris models, the Yaris Cross requires removal of the entire dashboard, including parts of the central console. This may take two to three hours to complete.

2024/2023 Yaris Cross 8A-H AKL dash out job.
Replace immo box.

Key Takeaways

• The 2023 Toyota Yaris Cross (European version) with a mechanical key uses a newer ID8A-H immobiliser that is not compatible with standard G-box connections.
• Many popular programmers (Autel, Lonsdor, Abrites) may fail when attempting all-keys-lost programming directly.
• A practical solution is to purchase an immobiliser box with a pre-programmed transponder and synchronise it using Autel, ensuring both engine and hybrid ECUs are synced.
• Be prepared for significant labour – removing the dashboard and centre console is essential and time-consuming.

www.obdii365.com

Keydiy KD-X4 Add 2024 VW Tiguan MQB49 5C Key

Here comes the real review on 2024 Volkswagen Tiguan MQB49 5C key programming using Keydiy KD-X4.

“Just wrapped up my first 2024 Volkswagen Tiguan add key job using KeyDIY—figured I’d share a few tips for anyone getting into these.
Overall, the job took me about an hour start to finish, and I was really happy with how smooth everything went once I had it figured out.
A few things I learned along the way:

Bring extra keys or shells
Removing the board portion can potentially damage the original, so having backup pieces is a smart move.

Keep the vehicle on the whole time with a battery maintainer
This is huge. If you damage the original key, when removing the shell, the car will still be on and you can still program the new keys.

If you hit a failure during key learning, it will not clearly tell you that SFD unlock is required. That was my hang-up. Once I realized it needed SFD unlock and used KeyDIY to handle it, everything went very smoothly.

If you accidentally damage the key during disassembly, you might still be able to read the data to make new keys and program. However, if you turn off the car while disassembling the key and damage the key. When you go back to turn on the car, you can’t and are in a all keys lost situation. But if car was left on it will allow you to go to key learning and learn new keys.

Used OEM remotes work
I used a used original Volkswagen remote with matching part numbers, and KeyDIY was able to overwrite the data—no need for an unlocked/new key.

Jusst look up the same part number of the customer’s key and buy a used one online. It will work.
Bring strong superglue because you have to cut open the key shell. Strong Glue and some clothes pins to hold down the case would help immensely when reassembling the shell.

End result
The new key worked flawlessly.
Hopefully this helps someone save some time on their first one”.

 

How to Modify Original MQB49 5C 5D Key ID with Keydiy KD-X4?

Good news — the Keydiy KD-X4 key programmer can now modify the ID of original factory VAG MQB49 5C and 5D keys. In previous versions, the KD-X4 could only change the ID of KD’s own 5C/5D keys (check this guide). With the latest update, the KD-X4 can also change the ID of original keys.

 

Fairly new update within the past few days.

Changing the original key ID will take 100 coins each time.

Example:

Done a VW ID.3 2021 MQB49 5D key. Changed factory key ID. Cost 100 coins to do so. No SFD lock.
5D done today for an ID.3 2021, changed factory key, cost 100 coins to do so.

Used OEM board, second hand from ebay. Worked a treat, carefully split case, then glued together and reassembled. No one will even know. It does cost 100 coins to rewrite original board ID, but did the job.

To be fair KD FGB would be a better option with the wireless remote generation. Without KD solderless adapter, you have to solder wires on the original key.

 

NOTE:

Modify the ID of KD’s FGB remote does not require points.

CGDI K2 and Yanhua ACDP will also modify OEM 5C/5D key ID.

Yanhua ACDP BMW B46D DME ISN Enter Safe Mode Error?

Problem:

It is a 2021 BMW X1 2.8i engine with B46D DME.
Can’t read Isn with Yanhua Acdp with B48 adapter, no matter what option I try.

Keep getting an entering safe mode error.
What could be wrong or this DME is not supported? (I’ve done many of these usually.)

After 2020/06 the DME is locked.
ACDP cannot read ISN for the locked DME.