How to Program a 2025 BYD Smart Key with KEYDIY KD-X4?

 The KEYDIY KD-X4 is a powerful key programming tool for automotive locksmiths and DIY enthusiasts. In this guide, we’ll walk you through programming a 2025 BYD Qin Plus smart key using the KD-X4 and a compatible KD remote.

What You’ll Need:

KEYDIY KD-X4 Key Tool

Compatible KD ZB Smart Remote

Vehicle: 2025 BYD Qin Plus DM-i

Step 1: Generate the Remote Program

• Navigate to Remote Function → BYD 2025 ID46
• Place the KD remote on the induction area of the KD-X4.
• Select Generate → Wireless Generation and wait for the process to complete.
• Once generation is successful, you’re ready to program the key to the vehicle.

Step 2: Program the Key to the Car

• Go to IMMO Programming → BYD → Select by type → 2025- → Smart key system → Start execution → Smart Key Pairing (No PIN Required) → Yes
• The car originally came with two keys. Begin programming the first key:

- Locate the induction area inside the armrest box (look for the key symbol).

- Follow the on-screen instructions to program the first key.

• When prompted to program the next key, select Yes.

- Remove the original key and place the new KD smart key in the induction area.

• After the second key is programmed, select No when asked to program a third key.

Step 3: Test the Keys

• Check remote functions: lock, unlock, and other buttons.
• Start the vehicle with the newly programmed key.
• Move the original key outside the car and ensure the new key starts the engine normally.

Done!

Your BYD smart keys are now programmed and ready to use. The KEYDIY KD-X4 makes the process straightforward — no PIN needed for this model.

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How to Replace Xhorse VVDI Key Tool Plus Battery?

 If the original battery in your Xhorse VVDI Key Tool Plus Pad is no longer functioning, you can replace it by following the instructions below.

Compatible Battery Model:

XHORSE XDKP00EN Battery (Suitable for VVDI Key Tool Plus Full Version and VA Version).

Step-by-Step Replacement Guide:

Step 1: Installation & Preparation

Take a clear photo of the label on the new replacement battery for reference.

Correctly insert the new battery into your device.

Ensure Key Tool Plus app is updated to the latest available version.

Step 2: Initialize the Battery in the App

Open VVDI Key Tool Plus app and navigate to Settings > Battery Initialization.

Enter the unique code printed on the battery label as prompted.

Step 3: Final Verification

Follow the on-screen instructions in the app.

Once the process is successfully completed, a notification saying "Battery Initialization Success" will appear, confirming that your device is ready for use.

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How to Use Yanhua Module 43 for Nissan 07A Gearbox Read Write?

 Yanhua ACDP Module 43 has been released for Nissan 07A (M3B, EOA, G2A, S0E, etc) gearbox data reading/writing and data transfer and replacement on bench. It’s compatible with ACDP1/ACDP2. No soldering. No risk!

ACDP-II Software Navigation Path:

Module-> Nissan TCM R/W data-> RE7R01A (07A SH72xxx)

Connection method:

1.Preprare Mini ACDP2, 20P Cable, Yanhua 7AT Interface Board, and Nissan 07A gearbox ECU

2.Align the 7AT Interface Board with the 7AT transmission plug

3.Short the jumper cap to the "CAN-R" port according to the marked position

4.Connect Yanhua ACDP2 and Yanhua Module 43 7AT Interface Board using the 20P cable

For the detailed operation guide, stay tuned!

Yanhua Module 43 is available at OBDExpresss.co.uk now. Don’t hesitate to get one!

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Fixed: LAUNCH CRP909/ CRP919 V12.12 Firmware Update Failed Code: 1

 If your LAUNCH X431 CRP909 or CRP919/CRP919E BT tablet displays the error "Firmware update failed! (Code:1) to V12.12," follow this step-by-step troubleshooting procedure to resolve the issue efficiently.

Solution

Re-download the firmware and perform a firmware repair to correct the installation failure.

Step-by-Step Instructions

1. Reconnect and Re-download Firmware

• Ensure the tablet is connected to a stable internet network.
• Navigate to Update in the system menu, select the V12.12 firmware package for re-download.

Recommended files include:
DOWNLOADBIN_CRP_12XIV2_V2 (V12.12)
DOWNLOADBIN_CRE_X_V2 (V12.12)
Firmware upgrade (V12.12)
Firmware upgrade Program (V12.12)

1. Perform Firmware Repair

• Return to the main interface and select DATA.
• Choose Firmware Fix from the options, and run the Firmware Fix.

Refer to the included interface images for visual guidance throughout the process.

Key Notes

• Use a reliable Internet connection to avoid download interruptions.
• Ensure the battery is sufficiently charged or the device is plugged in during the update.
• If the issue persists, verify network stability and attempt the download again.

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How to Check Lonsdor K518 Pro Paid Functions and Subscription Period?

 Question: How can I check the paid functions for my Lonsdor K518 Pro? Need serial number?

OBDExpress.co.uk engineer replied:

You can directly check the paid licenses on K518 PRO full version or FCV version.

No need to offer device SN to us for check.

Path:

Settings-> Device Info-> Paid function

In addition, you also can check the software subscription period for full version (e.g. 2 years free update).

If the subscription period expires, you can use the basic functions, but the following functions are not supported:

• Free Toyota AKL Activation / JLR License / Nissan License / Volvo License
• Newly upgrade features
• The function has been marked on the menu of K518 PRO key programmer:

Such as OBD hardware self-check 2 and OBDII upgrade

Check more functions supported by this link [https://center.lonsdor.com/product.html#/product/200/2]

Tech support:

Email: sales@OBDexpress.co.uk

WhatsApp: +86 18750906257

Working Time: 9:00am — 18:00 pm (UTC+08:00), Monday to Friday.

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Lonsdor BMW BDC License: Program Keys for Just $30 Lifetime

 Are you looking for a reliable and affordable way to program BMW keys? Look no further! Lonsdor now offers its powerful BMW BDC2/ BDC3/ BCP License with a one-time activation fee of just $30 — and you get lifetime FREE access!

What Does It Support?

1. BDC2, BDC3, and U-Chassis BMW models
2. Compatible with K518 PRO/K518 Series programmers
3. Works with both original keys and Lonsdor BM3S smart keys

What You’ll Need:

• Lonsdor BDC2 Adapter & BDC3 Solder-free Clip
• Lonsdor K518 Pro Key Programmer

Supported Models At a Glance:

How to Activate?

Simply contact your local Lonsdor distributor to subscribe and activate your license. Once activated, you’re set for life!

Important Note:

• The add-key function supports a limited range of keys.
• Even if your vehicle’s model year is listed, compatibility is not 100% guaranteed.
• Our software provides clear on-screen guidance to help you determine compatibility.

Requirements:

1. Active Lonsdor BMW BDC2/BDC3/BCP License
2. Stable internet connection

Ready to simplify your BMW key programming?
Get your license today and enjoy lifetime access to one of the most trusted tools in the automotive locksmith industry.

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Lonsdor K518 Pro with LSD-BDC2 Adapter Add 2019 BMW Smart Key

 This guide will show you how to program a smart key for a 2019 BMW 5 Series using Lonsdor K518 Pro.

Preparation:

• K518 Pro key programmer
• OBD communication cable
• Lonsdor LSD-BDC2 (G) Adapter
• Lonsdor BDC2 adapter cable
• 12V power cord
• Original vehicle key
• New BMW smart key (by Lonsdor)

Select "Read key data"

Check the current key state

Confirm VIN recognition.

Step 2: Backup & Restore Code

Select Backup & Restore Code→ Backup code

Back up coding data successfully.

Step 3: Generate Smart key

Connecting the Adapter:

Disconnect the OBD box and connect the Lonsdor BDC2 adapter to the BDC2 module.

Attach the adapter cable and 12V power cord to the BDC2 Adapter.

Back to the main menu of K518 PRO key programmer

Select Generate Smart Key → BMW → G Chassis (first menu).

Insert the new BMW smart key into the card slot and start the generation process.

Key generated successfully.

Step 4: Preprocessing

Return to main menu:

Immo & Remote → BMW → BDC2 → Program Smart Key → Preprocess.

Note: WIFI connection required for preprocessing.

Wait the preprocessing procedure is completed

Step 5: Generate Working Key

After preprocessing, select "Generate Working Key"

Select one blank key position (e.g. key position 14)

Insert the original key into the slot, then remove it.

Insert the new key into the slot.

New key generated and locked successfully.

Final Step: Test Key Function

1.Reinstallation & Testing:

Reinstall the BDC2 module into the vehicle.

2.Test the original key: Start the vehicle → Confirm normal operation → Turn off the engine.

3.Test the new key: Place it in the key recognition area, hold the start button to complete programming.

Functional Verification:

New key: Start the vehicle, test remote lock/unlock.

Original key: Start the vehicle, verify remote functions.

Smart key programming for the 2019 BMW 5 Series is now complete by Lonsdor K518 Pro key programmer.

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