Lonsdor K518 Pro Add 2025 Toyota BZ4X LT-20 Smart Key OK

 This step-by-step guide explains how to successfully add a smart key to a 2025 Toyota BZ4X using the Lonsdor K518 Pro and an LT-20 Smart Key. Follow these instructions for a reliable and cost-effective key programming process.

Tools & Parts Needed

Lonsdor K518 Pro Key Programmer

Lonsdor LT-20–10 Smart Key

30-Pin Adapter Cable

Original Working Toyota Key

Step-by-Step Programming Guide

Step1. Key Generation with LT-20

Open K518 Pro, go to: Immo &Remote → Toyota → Key Settings → LT20 smart key → Covert smart key type

Place the new LT-20 key on the K518 Pro to generate.

By identifying working key → Place a working key into K518 Pro’s card slot.

Hold the original key close to the card slot and press the button to detect.

The tool should display two frequencies (e.g., 314.35/312.09MHz).

Always select the higher frequency first for better reliability.

Assign the key functions as follows:

Button 1: Lock

Button 2: Unlock

Button 3: Hatch/Trunk

Button 4: Panic

Button 5: AC (if supported)

Put LT20 smart key back to the K518 Pro’s cars slot to generate.

The process usually takes a few minutes.

Step2. Add Key to Vehicle

Go to Immo & Remote → Toyota → Select from vehicle → USA → BZ4X → Smart Key → PEPS(CAN) → Backuo Immo data

I’ve already backup the data, so select “Add Smart Key”.

Turn the ignition ON (do not start the engine).

Load the previously saved backup EEPROM data.

The tool will bypass the encode out code.

Follow the on-screen instructions until you hear two beeps.

Step3. Test the Key

Test all buttons, verify the key starts the vehicle.

A message like “A new key has been registered” confirms success.

Pro Tips

• Always back up EEPROM data before starting.
• Use the original key for frequency detection when possible.
• If the key fails, try upgrading the key via the tool.
• For difficult cases, use a third-party service to generate data.

Conclusion

Programming a smart key for 2025 Toyota BZ4X with the Lonsdor K518 Pro and LT-20 key is a straightforward process when following these steps. This method is both affordable and reliable, making it an excellent alternative to expensive OEM keys.

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How to Change OBDSTAR ODOMaster Language?

 Question: Can I change the language of OBDSTAR ODOMaster to Spanish? How to do?

OBDexpress.co.uk technician replied:

Yes, currently ODOMaster supports several languages, including English (default), Italian, Russian, German, Spanish, Polish, Portuguese, and French.

You can freely switch to any of these languages directly on the device, and no device SN is needed for this process.

Please note:

You can only have one additional language active besides English, but you are free to switch between English and that language as many times as you like.

Simple guide to change language:

For example: English-> French

Turn on OBDSTAR ODOMaster odometer correction tool

Tap "DP" on the home page and agree to the disclaimer

After a moment, the language will be successfully changed

Restart the device to confirm the new language setting

Then from the main menu, select "Upgrade" to log in to your account

Select the software you want to update

Once completed, your ODO Master is ready for use.

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EONEBOSS TLK1 User Manual: Unlock Toyota/ Lexus 8A-AA Keys

The EONEBOSS TLK1 is a professional key unlocking tool and one of the essential Key Programming Tools designed for Toyota and Lexus vehicles using 8A-AA, BA, B9, and B8 type keys. This guide explains how to easily restore and reprogram locked or deleted keys.

Key Features

• Simulate & Restore Keys: Reads, matches, and writes back key data.
• Voice & Light Guidance: Real-time status updates via voice and LED indicators.
• Flexible Power Options: Works with battery (3.7V, 450mAh) or external power (5V/500mA).
• Wide Compatibility: Use with phone chargers, power banks, computer USB and 5V adapters.

LED Status Guide

Solid Green: Connected and charging.

Solid Red: Voice broadcast mode with real-time status updates.

Flashing: Core operation in progress (read/match/write).

Button Controls

Power On/Off: Long press (~3 seconds).

Check Status: Short press for voice update.

Reset Device: Long press (~5 seconds).

How to Use EONEBOSS TLK 1?

Step 1: Simulate the Key

Place the locked or deleted key in the TLK1 sensing area. Press the button. The device will read the key ID and simulate a matching key.

Step 2: Match to Your Vehicle

Use the TLK1 as a temporary key during the vehicle matching process. It will write the key ID and security data into your car’s system.

Step 3: Write Back to Original Key

Once the data is retrieved, the TLK1 writes the complete key information back to the original key, restoring its function.

Step 4: Final Check

Test the original key to confirm it starts the vehicle and all functions work.

Summary

With the EONEBOSS TLK1, restoring Toyota/Lexus 8A-AA, BA, B9, and B8 keys is fast and user-friendly. Follow these simple steps to reactivate locked keys and avoid costly replacements.

Read also

EONEBOSS TLK 1 Key Tool: Reuse Toyota/Lexus Keys Easily

http://blog.obdexpress.co.uk/2025/10/14/eoneboss-tlk-1-key-tool-reuse-toyota-lexus-keys-easily/

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KEYDIY KD-MAX Connect iPhone Failure Solution

 Problem:

One customer gave feedback that when he connected Keydiy KD-Max with his iPhone, the connection was not possible.

On both devices were BT on and would be detected…

It showed that they were connected via BT, but at this screen he did not see the pairing.

The solution:

KD-Max works completely independently — no phone connection is needed. It performs direct key programming on its own.

Tech support:

Email: sales@OBDexpress.co.uk

WhatsApp: +86 18750906257

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KEYDIY KD-X4 + Dismantling-free Clip Add BMW BDC03 Keys

 This guide explains how to use the KEYDIY KD-X4 Programmer with the Specific Dismantling-Free Clip to add an original BMW BDC03 key. The OEM key must be pre-soldered according to the wiring diagram for this process to work.

Tools Required

KD-X4 5-in-1 Key Tool

BDC03 Dismantling-Free Clip

Soldered OEM Key

Mobile device with KD App installed

Connection Setup

1. Open the dismantling-free clip package and identify the four wires: Orange, Black, Red, Brown.
2. Connect the corresponding wires from the KD-X4 programming cable into the clip.
3. Turn on all four switches on the clip.
4. Slightly extend the wire ends for better contact to avoid reading failures.
5. Open the original car key and attach the BDC03 clip securely.

Programming Steps

Power on the KD-X4 and open the KD App on your mobile device. Go to Bluetooth Settings and connect.

From the homepage, select IMMO Programming → BMW → Select by Type → G/U Chassis BDC3/BCP Anti-Theft System → Start Execution → Verify the wiring diagram and confirm proper connections.

Select Add Key → G Chassis/BDC3 Clone.

Connect the original car key to the KD-X4 via the programming harness.

Tap Read Chip Data → OK. Wait for a successful read.

Swap to the new OEM key and select Original Key(Non-Vehicle).

Confirm and proceed. Once generation is successful, the key is ready to be installed into the key case.

Important Notes

• The OEM key must be soldered beforehand — reading an unsoldered key will fail.
• Ensure all connections are secure to prevent communication errors.
• Use the Mobile KD App’s wiring diagram for visual reference during setup.

This method offers a dismantle-free, efficient way to program BDC03 keys using KEYDIY tools.

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BMW G Series BDC3 Key Copy by Yanhua ACDP2

 Now Yanhua Mini ACDP1/ACDP2 can support key copy function for 2020–2024 BMW G series BDC3 smart key (Hungary key) /U series BCP ICP key (with and without UWB functionality).

This guide explains how to successfully clone a BMW BDC3 key.

Required Equipment:

• Yanhua ACDP2/ACDP Key Programmer
• Yanhua Module 38 License
• Yanhua BMW BDC3/BCP ICP Interface Board

Procedure:

Software Installation

• Install latest ACDP software:
• ACDP1: App v1.0.64+
• ACDP2: App v2.0.8+
• PC Software: v3.0.141+
• iOS App: v3.6.4+

Key Verification

Remove key rear cover

Verify: BMW BDC3 key for G-Chassis, Hungary manufacture (2020–2024)

Initial Setup

Launch ACDP II software

Select BMW-> BDC3/BCP ICP Copy Key-> Special Function

Original Key Identification

Choose ‘Identify Key Info by BAV Adapter’

Connect ACDP to BAV adapter

Insert original key-> Read & save key data

Data Extraction

Return to previous menu-> Select ‘Help for G-BDC3 (NCF2953)’

Connect: Original key, BDC3 ICP board, Mini ACDP unit

Select ‘G-BDC3 (NCF2953) -> Read Orig-Key Data’

Verify key information-> Confirm to proceed

Data Backup

Backup key data (.bin format)

Record: File path, date/time, VIN, Key ID

Key Programming

Replace with blank key

Select ‘Write New Key Data’

Important: Original key must be disconnected

Confirm new key is blank

Select original key backup file

Verify original key info-> Write data

Verification

Swap Yanhua ACDP BMW BDC3 ICP board for BAV adapter

Insert new key-> Special Function-> Identify Key Info

Confirm new key data matches original

Done!

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How to Download & Login KEYDIY TOOLS PC Software?

 KEYDIY now offers PC software that syncs with your Mobile KD account, allowing you to use the KD-X4 Key Tool directly from your computer.

How to download Mobile KD App on smart phone?

1. Search for "Mobile KD" in the Google Play/App Store;
2. Download and install the app

How to download & login KEYDIY PC Software?

Visit [https://dlen.keydiy.com/] to download KD TOOLS;

Unzip the package and install PC software;

Open KD TOOLS to upgrade first: includes data, software and firmware updating;

Login KEYDIY account:

• Open the Mobile KD APP to click "+" on the right top;
• Scan the QR code to synchronize the PC software data.

Connect KD-X4 to OBD port, then use an OTG cable to link KD-X4 &your PC.

Now, you can start to program keys.

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