How to Add 2025 Buick GL8 Smart Key with KEYDIY KD-X4 & DOIP Adapter?

This guide provides a straightforward walkthrough for programming a new 2025 Buick GL8 smart key using the KEYDIY KD-X4 and the Specialized DOIP Adapter. This process is essential for newer Buick models that utilize rolling code security.

Prerequisites & Tools Needed

Before starting, ensure you have the following hardware ready:

• KD-X4 Key Programmer
• KD Universal Smart Key
• KEYDIY DoIP Adapter
• Stable internet connection (for third-party password calculation)

Step-by-Step Programming Guide

Key Identification & Generation

First, verify the frequency of the original key to ensure the new KD smart key is programmed correctly.

• Test the original key’s frequency (it should be 433.92 MHz).
• Power on the KD-X4 and select Remote Function > Smart Key Remote. > Buick > GL8 2025-ID4A 433.92.
• Place the new KD smart key into the KD-X4 slot and generate the remote.

Hardware Connection

Newer Buick GL8 models require the DOIP protocol for IMMO programming.

• Disconnect the standard OBD plug and connect the DOIP Adapter.
• Plug the adapter into the vehicle’s OBDII port.

IMMO Programming & Password Calculation

Since the 2025 Buick GL8 uses a sophisticated rolling code system, static passwords will not work. You must perform an online calculation:

• In the KD app, navigate to IMMO Programming > KD-X4 > DOIP > Start Execution > Add Smart Key.
• Follow the prompts to press the start/stop button once, turn off the ignition and move all existing keys away from the sensing area.
• Rolling Code Entry: The device will generate data. Send this data to your third-party provider to receive the first password.
• Repeat the process for the second set of data to get the second password.

1. Final Matching

• Once the passwords are confirmed, wait 5 seconds.
• Place the new KD smart key into the square key slot next to the cigarette lighter.
• Press and hold the Start/Stop button for 5 seconds to finalize the link.

Testing the Results

After the app confirms "Matching Completed," test all remote functions:

• Unlock/Lock: Ensure the doors respond immediately.
• Sliding Doors: Verify the electronic sliding door buttons function correctly.
• Engine Start: Ensure the vehicle starts with the new key while the original is kept at a distance.

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Tesla 1512876–00-E Airbag Repair by CGDI CG100X/CG70 OK

 CGDI CG100X and CG70 Airbag Reset Tool have been updated to fully support the encrypted Tesla airbag module 1512876–00-E (R7F701330). Now you can clear crash data automatically — no need to send modules back to the factory!

How It Works (Both Tools)

CG100X and CG70’s built-in algorithm handles everything automatically:

1.Read 95M01 EEPROM data

2.Auto-correct crash data

3.Unlock and read 1330A MCU

4.Write repaired data back

Method 1: Using CGDI CG100X Programmer

Preparation:

Update CG100X software to V2.0.4.0 or above

Use PRO V2 Harness and D1 Adapter

Steps:

1.Remove Tesla airbag shell

2.Connect CG100X to airbag via PRO V2 Cable and CG100X D1 Adapter

3.Navigate: Airbag → American car → Tesla → 1512876–00-E → R7F701330 (encrypted) → Start operation

4.Tool auto-decrypts, erases, and writes data

5.Success message appears

6.Re-check DTCs to confirm fault cleared

Method 2: Using CGDI CG70 Airbag Reset Tool

Preparation:

Update software to V1.2.1.0 or above

Use jumper cables

Steps:

1.Connect CGDI CG70 to Tesla airbag via harness, and connect to PC via USB cable

2.Supply power to CG70

3.Open software → select Tesla model → Read DTC

4.Example fault: B1193:63-AF CRASH Event Storage Full and Locked

5.Contact CGDI support to complete the repair (do not attempt alone)

Important

Always contact CGDI technicians for repair assistance — no self-repair.

For Tesla 1872985–00-A (R7F701330), CG70 currently supports diagnostics only. Full SRS reset coming soon.

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Lonsdor K518 Pro Guide: Add 2015 Hyundai IX35 ID46 Smart Key

Looking for a reliable way to perform Hyundai ix35 key programming? This guide shows how to use the Lonsdor K518 Pro to program a 2015 Hyundai ix35 ID46 smart key via OBD.

Prerequisites & Preparation

Before beginning the programming process, ensure you have the following items ready:

• Lonsdor K518 Pro Key Programmer.
• OBD Cable for vehicle connection.
• One working original car key.
• A new Lonsdor smart key.

Step 1: Generate the Smart Key

The new key must first be initialized to the correct vehicle profile.

1. Connect the K518 Pro to the vehicle’s OBD port.
2. Navigate to Generation Smart > Hyundai > IX35 ID46(Semicircle)
3. Place the new Lonsdor smart key into the K518 Pro card slot.
4. Click Generate and wait for the "Generate Successful" message.

Step 2: Read the PIN Code

The PIN code is required to access the vehicle’s immobilizer system.

1. From the main menu, go to Immo & Remote > Hyundai > Select from Vehicle > China > ix35 > 2014–2017 > Program smart key > Read PIN Code(46 smart key) > Read PIN Code via OBD.
2. Follow the on-screen prompts:

• Turn off the ignition.
• Open and close the driver’s door once.
• Turn on the hazard lights (two flashing lights).

The device will then display the successfully read PIN code.

Step 3: Program Smart Keys

Once you have the PIN, you can link the keys to the vehicle.

1. Select Program Smart Key from the menu.
2. Press the vehicle’s Start button once.
3. Turn off the ignition.
4. Open and close the driver’s door again and ensure hazard lights are on.
5. The K518 Pro will automatically enter the PIN code; click OK to continue.
6. Follow the device prompts to complete the programming for the first key.
7. If you have a second key (the original), follow the prompts to program it as well until "Programming Complete" is displayed.

Step 4: Verify Success

Always test both keys to ensure full functionality.

• Engine Start: Step on the brake and press the Start button with the new key, then repeat with the original key.
• Remote Functions: Test the Lock and Unlock buttons on both remotes to ensure they operate normally.

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How to Clone MQB48 5A RH850 Cluster by Yanhua ACDP2?

 Question: I don’t need to write the anything separately, I just want to change my VW 5A RH850 cluster from analog to new digital, will it be possible to do it with Yanhua ACDP2?

OBDexpress.co.uk engineer replied:

Yes, you can use Yanhua Module 34 to work with ACDP2 to read and write MQB48 data.

Check the ACDP II software menu path below and follow the prompts to operate.

VW-> VW MQB IMMO-> MQB48 (R7F7014xx 5A)-> ICP ODO-> R7F701401 Interface Board-> Step Mode-> Step 1: Read Data-> Step 3: Write Data

Reference:

http://blog.obdexpress.co.uk/2024/08/29/yanhua-acdp-with-module-34-change-vw-mqb-342695128-dashboard-mileage/

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How to Disassemble BMW BCP Key by Yanhua BTOOL?

Struggling to open a BMW BCP key? Use Yanhua BTOOL BCP Key Cutting Kits to remove the inner shell safely — no damaged PCBs.

Preparation:

BMW BCP Key

Yanhua BMW BCP Key Cutting Kits

• Key clip base plate
• Key clip
• Limit blade clamp
• Blade
• Off-pin blade
• Hammer
• Scalpel
• Pry knife
• Pry tool

Step-by-step guide:

Step 1: Get the Key Ready

Take your Yanhua ACDP Btool Kit to start opening the BCP key.

Lift the clip on the holder.

Match the key’s logo with the post inside the holder.

Put the key in place. Line up the small hole with the guide pin.

Snap the clip shut to lock the key.

Slide the holder onto the base plate and fasten the nut.

Step 2: Cut the Back

The tool shows only the welded plastic seam.

Begin at the back. Put the blade’s left edge into the slot’s right edge.

Tap the blade with a hammer until it hits the stop notch.

Set the blade in the clamp. Tilt it 20° and line it up with the weld.

Hit the top-right of the blade to slice the seam.

Step 3: Use a Smaller Knife

When the cut hits the tool’s groove, switch to a scalpel.

Point the blade right. Push the tip straight down into the groove.

Slide the scalpel sideways so the blade back rests against the bevel.

Tap until the blade goes through to the bottom.

Step 4: Cut the Front

Look at the sticker guides. Find the three grooves to cut.

Careful: Skip the groove the sticker marks.

Cut the three spots first. Tilt the blade 20° , insert, and tap.

At the third spot, pull out, re-angle, and tap again along the seam.

Step 5: Open and Remove PCB

Take the inner shell off the tool.

Put the off-pin blade into the front clip.

Stick the pry tool into the back groove. Push toward the side cover to pop it open.

Wedge a pry knife into the front seam. Twist left and right to rip it open.

Lift out the circuit board.

Result: The PCB is safe and undamaged.

Done!

It’s safe, clean, and professional BCP key opening with Yanhua ACDP BTOOL BCP Key Cutting Kits.

After disassembly, use Mini ACDP2 with Module 38 and BMW BCP Interface Board/BCP Key Encrypted Key Copying Interface Board to copy BCP key easily.

 

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How to Read VAG MQB49 5C/5D Keys with Xhorse Multi Prog?

 VAG MQB49 5C/5D key reading function for Xhorse Multi Prog Programmer is currently in testing.

It’s available to use the test feature with the method below.

1.How to Access:

Go to Help -> Test 180 in the software.

2.Required Modification:

You must modify the MCU adapter by adding two black wires (GND short & GND long).

3.Wiring Diagrams:

Follow the wiring diagram in Multi Prog software below for the key connections.

(For Volkswagen 5C/5D, Audi 5D, Porsche 5D keys)

4.Troubleshooting:

If key data reading fails using Multi-Prog, please add a 100-ohm resistor in series with the CLK wire.

Please note that though Xhorse Key Tool MIDI has the option "Disassemble and read key data" for MQB49/5C immo system, but it does not yet support now.

If you try to use this function, it may display a "function not supported" message. In this case, a VVDI Programmer (e.g. Xhorse Multi Prog) is required to perform the initial data read.

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