Lonsdor BM3S Smart Key: Unlock 2020-2024 BMW G-Chassis

Lonsdor introduces the next essential upgrade for every BMW owner - the BM3S Universal Smart Key. Designed for modern G-Chassis BMWs with BDC2, BDC3, and BCP system vehicles. 

Wide Compatibility & Advanced Support

The Lonsdor BM3S seamlessly supports:

2020-2024 BMW Models, including:

2, 3, 4, 5, 6, 7, 8 Series

X3, X4, X5, X6, X7

Z4 and more

2021-2024 BMW 1 Series & 2 Series

2022-2024 BMW X1 & X2

Core Advantages

1. Plug & Play Compatibility - Instantly works with mainstream 2020–2024 BMW models.

2. Two Circuit Board Options - Choose between BM3S-01 or BM3S-02 to match your style.

3. Targeted Performance - Engineered specifically for low-configuration BCP keys (without the J29D5C chip).

4. Professional Pairing - For seamless programming, pair it with the trusted Lonsdor K518 Key Programmer.

Who Is This For?

1. BMW owners who want a reliable spare or replacement smart key.

2. Anyone with a compatible 2020–2024 BMW model.

3. Those looking for a cost-effective and trusted alternative to dealership keys.

Ready to access more? Experience smarter control with Lonsdor.

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Lonsdor K518 PRO Program 2024 Honda CR-V All Keys Lost OK

This tutorial guides you through programming a new smart key for the 2024 Honda CR-V when all keys are lost using the Lonsdor K518 PRO.

Tools Needed

Lonsdor K518 Key Programmer

OBD communication cable

Lonsdor Honda Smart Key

Step-by-Step Procedure

Step 1: Generate Smart Key

1. Connect K518 PRO to the OBD port, select: Generate Smart Key→ HONDA → CRV → CRV 4A

2. Place the new smart key in the card slot.

3. Click "Generate." Wait for "Generate successfully".

Step 2: Program All Keys Lost

1. Return to the main menu, choose: IMMO & Remote → HONDA → Select From Vehicle →Asia → CR-V →2023- → Smart Key→PUSH Button → All Smart Key Lost

2. Follow the on-screen prompts and click OK: 

① Turn the ignition OFF.

② Place the new smart key inside the vehicle. Ensure no other keys are within 5 meters.

③ Press the start button twice. Ignition will not turn on (all keys lost), press Cancel.

④ Long-press the start button until ignition turns on.

⑤ Click OK and enter the number of keys to program.

⑥ Within 15 seconds, turn the ignition OFF, then back ON. Wait for the security light to go off, then click OK. Repeat the OFF/ON cycle within 15 seconds.

⑦ The K518 tool will confirm: "Number of programmed keys."

The key programming is completed.

Step 3: Test the Key

1. Turn the ignition OFF and restart.

2. Test the key:

① Step on the brake and press the start button - the engine should start.

② Test remote lock/unlock - functions should work normally.

For more tutorials and automotive programming tips, stay tuned.

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How to Lonsdor K518 PRO to Program a 2024 Volvo S60 Smart Key

This guide outlines the procedure for programming a new smart key for a 2024 Volvo S60 using the Lonsdor K518 PRO tool. The process involves both reading data directly from the Central Electronic Module (CEM) and performing key programming via the OBD-II port.

Tools Required:

Lonsdor K518 PRO

OBD communication cable

KPROG adapter

LC202 cable

A new smart key

Step-by-Step Procedure:

Part 1: Reading Data from the CEM Module

1. Disassemble and Access the CEM: 

Locate and carefully disassemble the Central Electronic Module (CEM) box from the vehicle. Follow the specific disassembly diagrams for your vehicle model.

2. Connect Hardware for Reading:

Connect the LC202 cable to your K518 PRO and the KPROG adapter.

Connect the 12-volt power cord to the K518 PRO.

Connect the KPROG adapter to the appropriate points on the CEM board to read the data.

3. Read CEM Data:

On the K518 PRO, navigate: [Immo & Remote] -> [Volvo] -> [S60] -> [2022-] -> [Program smart key] -> [Read CEM data].

Click [OK] to continue.

You will be prompted to enter a name for the backup file. Enter a name and proceed.

The tool will initialize the target chip and begin reading the data.

Once you see a "Read successfully" message, click [OK].

Reinstall the CEM: The CEM data has now been successfully backed up. Reinstall the CEM box into the vehicle before proceeding to the key programming stage.

Part 2: Programming the Smart Key via OBD

1. Connect Tool via OBD:

Plug the OBD communication cable into the vehicle's OBD-II port and connect it to the K518 PRO.

2. Start Key Programming Function:

Navigate: [Immo & Remote] -> [Volvo] -> [S60] -> [2022-] -> [Program smart key] -> [All smart key lost].

Then, select the second menu option: [Load CEM data to obtain 10-bit security code].

3. Load the Backup Data:

The tool will explain that this function requires the CEM data read via the KPROG adapter (supporting CEM main chip SPC5748G).

You will be prompted to select the PFLASH or DFLASH data file. Select the backup file you created in Part 1.

4. Confirm Key Deletion:

A warning message will appear stating that all registered keys will be deleted. Ensure you have all keys you wish to program ready.

The tool will connect to the vehicle and delete all existing keys. You will see a confirmation: "The number of programmed keys is 0".

5. Program the New Key:

You will be instructed to place the new smart key in the vehicle's induction area (typically the cup holder or center armrest).

Click [OK] to begin programming.

The tool will program the key. Once complete, you will see a message: "The number of programmed keys is 1".

If you do not need to program another key, click [Cancel].

6. Completion: The programming process is now complete. The newly programmed smart key should successfully start the vehicle.

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Lonsdor K518 PRO Add 2023 Toyota BZ3 Smart Key OBD Tutorial

Today, we're gonna show how to add a 2023 Toyota BZ3 smart key with Lonsdor K518 PRO by OBD.

What We Need:

Lonsdor K518 Pro Key Programmer

OBD Communication Cable

An Original Key & a New Smart Key

Step-by-Step Procedure

Plug in the OBD communication cable.

Immo &Remote >> Toyota >> Select from vehicle >> China >> BZ3 >> 2023- >> Smart key >> PEPS(CAN) >> Add smart key

All keys require reprogramming; unprogrammed keys will become invalid. You can program up to 4 keys.

Click OK to confirm the IK controller serial number.

Start to program no.1 key, pls hold the key closer to the car start button, click OK to continue.

Programmed successfully. Click OK to program the next key.

Start to program the no.2 key. pls hold the key closer to the car's start button, click OK to continue.

Programmed successfully. Click Cancel to complete.

Count of currently programmed and valid keys: 2

Both keys can start the vehicle and remote work well.

Done.

The Lonsdor K518 Key Programmer proves to be a reliable and user-friendly tool for modern Toyota smart key programming.

Video guides:

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Lonsdor K518 PRO Programs 2011 Land Rover Discovery 4 key

This guide explains how to program new smart keys for a 2011 Land Rover Discovery 4 when all keys are lost, using the Lonsdor K518 PRO.

Tools Required:

Lonsdor K518 Key Programmer

OBD communication cable

Lonsdor JLR Smart Key

Step-by-Step Procedure:

1. Connect the Tool:

Plug the OBD cable into the vehicle's OBD port and into the Lonsdor K518.

2. Generate Smart Key:

From the main menu, select "Generate Smart Key" → Land Rover → Land Rover 433 ID49.

Place the new smart key into the K518 PRO slot and select "Generate."

Wait for the "Generation Successful" message.

3. Program the Smart Key:

Return to the main menu and select

Immobilizer & Remote → Land Rover → Select from vehicle → Discovery 4 → Program Smart Key → All smart keys lost.

Turn on the hazard lights when prompted.

4. Follow On-Screen Instructions:

The tool may ask if you want to program additional keys. Confirm or cancel as needed.

Hold each key in your hand as instructed and follow all prompts carefully:

Please switch the ignition off.

Programming...Within 5s, press the smart key(to be added)' unlock button once.

Locking... Within 5s to click the unlock button of the smart key to be added once.

5. Complete the Process:

Once programming is complete, test each key:

Step on the brake and press the start button.

Verify that the engine starts.

Test the remote lock and unlock functions.

Result:

Both keys should start the vehicle and operate the remote functions normally.

This Lonsdor K518 PRO tutorial helps you successfully program all-new smart keys for the Land Rover Discovery 4 - even in a full key-loss situation.

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Lonsdor K518 PRO Program 2024 Nissan Rogue All Keys Lost

Learn how to program the 2024 Nissan Rogue all keys lost using the Lonsdor K518 PRO Key Programmer via OBD. This step-by-step tutorial covers BCM connection, key ID reading, and smart key programming for a complete vehicle restart.

Tools Required

Lonsdor K518 PRO

NISSAN 40PIN-BCM Cable

2024 Nissan Rogue

A New Key

Immo & Remote >> NISSAN >> Select from vehicle >> North America >> Rogue >> 2021-2023 >> Smart key(PUSH button) >> All smart key lost

This function requires unplugging the BCM connector, then using the Nissan-40 Specific Cable to connect the BCM, and pressing OK to continue.

All keys of this vehicle must be reprogrammed. Press OK to continue.

Turn the ignition off.

Turn on Hazard warning lights.

Stay at P or Neutral gear;

The steering column is in the unlocked state.

Press OK.

Start to read the key ID:

Place a smart key (to be programmed, with the logo facing upwards) flat on the ignition switch, ensuring the key's logo end is directly aligned with the ignition.

Note:

1. Do not move the key from the ignition.

2. Do not press any button.

3. Do not insert or remove the little mechanical key from the key.

Press OK.

Count of new keys: 1

Count of old keys: 0

Current key count in total: 1

Here requires to read ID of the keys to be programmed.

Click Cancel to go to the next step.

28-bit PIN has been read out.

It can be used when the program key is on AKL condition!

Start to program the key.

Place a smart key (to be programmed, with the logo facing upwards) flat on the ignition switch, ensuring the key's logo end is directly aligned with the ignition.

Press OK.

Programmed successfully, press Cancel to complete.

Count of keys programmed successfully: 1

1. Press each key's Lock and Unlock buttons, and check if it works normally.

2. Check if each key can start the car separately after finishing the above operations. Click OK to end the procedure.

After checking all keys, do not exit this function.

Operate as per the prompts below and click OK:

1. Unplug the connector, reinstall the vehicle's gateway module.

2. Connect the device to the OBD port, and turn the ignition on.

Test the new key, and all can work well.

Successfully done.

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