Solved: Yanhua ACDP 2016 BMW G12 750i "Obtain password error"

Problem: When using the YANHUA Mini ACDP to program a 2016 BMW G12 750i for an all keys lost situation, the newly programmed key starts the engine, and the remote control works correctly. However, in the final step - synchronizing the EGS (Electronic Gearbox Control) and EWS (Immobilizer) - the tool shows an error:

"Obtain password error, please contact technical support!"

The system and immobilizer information were read, but the process could not be completed.

Solution

This YANHUA ACDP error often occurs on BMW models with two engine control units. If the EGS password cannot be retrieved, it usually means the incorrect engine control unit data was read.

For BMW vehicles with two engines during an all keys lost procedure, you must read the EEPROM data from the main engine control unit, not the secondary one. Reading data from the wrong unit will result in a password read failure.

Ensure you identify and read the data from the correct ECU to complete the EGS/EWS synchronization.

Technical Support

Email: Sales@OBD2shop.co.uk

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Telephone: +86 13983755934

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Toyota R7F701441 Mileage Correction with ACDP Module 41

This article provides a step-by-step guide on how to perform mileage correction on a Toyota R7F701441 instrument cluster via OBD/CAN method using the Yanhua ACDP 2 and ACDP Module 41.

Preparation:

As shown in the picture, connect the ACDP device to the vehicle’s OBD interface.

Open the ACDP application and ensure that the ACDP programmer is bound (check the top right corner of the screen).

Entering the Correction Menu

In the ACDP app, navigate to:

"Module" → "TOYOTA ODO" → "OBD/CAN Reset mileage"

Then, select the instrument model. This demonstration uses the R7F701441 instrument as an example.

Toyota S6J3001 mileage correction can refer to the following article:

http://blog.obd2shop.co.uk/toyota-s6j3001-mileage-correction-with-acdp-module-41/

Step 1: Identify Info

Connect ACDP to the OBD-II port.

Turn on the ignition — the ODO display must be lit.

Click "Identify Info".

The system will read instrument information. Wait until the process completes.

Step 2: Reset KM Data

Click "Reset KM data".

The system will attempt to read ODO data.

If an error occurs indicating that programming mode cannot be entered, remove the instrument cluster from the dashboard and proceed with the bench wiring method as described in the ACDP help documentation.

Step 3: Bench Connection & Data Reset

After connecting the ACDP to the instrument via the bench method, select again:

"R7F701441 ODO" → "Reset KM data"

The system will prompt you to back up the original ODO data. Save the file with a name ending in Orig.bin and note the backup path and time.

Enter the new mileage value.

A warning will appear:

“Programming is about to begin. Do NOT power off or unplug the device!”

Click "Continue" to start the process.

Once completed, the system will confirm: “Reset mileage finish.”

Step 4: Verify Changes

Click "Identify Info" again to check the instrument information.

The mileage should now be updated successfully.

Video Tutorial

For a visual demonstration, please watch the video:

https://www.youtube.com/shorts/HdDovtuxZ-I

Notes:

Always back up the original data before programming.

Use anti-static precautions when handling the instrument cluster.

Ensure stable power and connection during writing.

For further support, refer to the ACDP user manual or contact technical support.

www.obd2shop.co.uk

Toyota S6J3001 Mileage Correction with ACDP Module 41

This article provides a step-by-step guide on how to perform mileage correction on a Toyota S6J3001 instrument cluster using the ACDP and ACDP Module 41.

Preparation:

As shown in the picture, connect the ACDP device to the vehicle’s OBD interface.

Open the ACDP application and ensure that the ACDP programmer is bound (check the top right corner of the screen).

Entering the Correction Menu

In the ACDP app, navigate to:

"Module" → "TOYOTA ODO" → "OBD/CAN Reset mileage"

Then, select the instrument model. This demonstration uses the S6J3001 instrument as an example.

Step 1: Identify Info

Connect ACDP to the OBD-II port.

Turn on the ignition — the ODO display must be lit.

Click "Identify Info".

The system will read instrument information. Wait until the process completes.

Step 2: Reset KM Data

Click "Reset KM data".

The system will attempt to read ODO data.

If an error occurs indicating that programming mode cannot be entered, remove the instrument cluster from the dashboard and proceed with the bench wiring method as described in the ACDP help documentation.

Step 3: Bench Connection & Data Reset

After connecting the ACDP to the instrument via the bench method, select again:

"S6J3001 ODO" → "Reset KM data"

The system will prompt you to back up the original ODO data. Save the file with a name ending in Orig.bin and note the backup path and time.

Enter the new mileage value.

A warning will appear:

“Programming is about to begin. Do NOT power off or unplug the device!”

Click "Continue" to start the process.

Once completed, the system will confirm: “Reset mileage finish.”

Step 4: Verify Changes

Click "Identify Info" again to check the instrument information.

The mileage should now be updated successfully.

Video Tutorial

For a visual demonstration, please watch the video:

https://youtu.be/-tOxF4RO_E4

Notes:

Always back up the original data before programming.

Use anti-static precautions when handling the instrument cluster.

Ensure stable power and connection during writing.

For further support, refer to the ACDP user manual or contact technical support.

www.obd2shop.co.uk

Mastering Toyota Cluster Mileage Correction with Yanhua ACDP Module 41

In the field of automotive repair and adjustment, odometer (mileage) correction is a highly specialized task. It’s often required in scenarios such as instrument cluster replacement, ECU swap, or restoring a repaired dashboard. The Yanhua ACDP system, with its modular design and user-friendly interface, has become a trusted solution for professionals worldwide.

Today, let’s take a closer look at ACDP Module 41, which is specifically designed for Toyota clusters using R7F7014xx and S6J3xx chips.

Two Versions Available:

1. Module 41 License (for users who already own Module 35)

If you already have Module 35, you only need to purchase the Module 41 license to unlock mileage correction features. This is a cost-effective solution since you don’t need to buy extra hardware.

2. Full Module 41 Package (standalone)

For new users who don’t own Module 35, the standalone Module 41 is the right choice. It includes the necessary authorization and works independently for Toyota mileage correction.

Supported Chip Types:

Both versions of Module 41 support the following instrument cluster chips:

1. Support Toyota S6J3001 (2019-) encrypted/unencrypted chips instrument mileage correction via OBD/CAN method.

2. Support Toyota R7F701401 (2021-) encrypted/unencrypted chips instrument mileage correction via OBD/CAN method.

3. Support Toyota R7F701441 encrypted chips instrument mileage correction via the OBD/CAN method.

Supported Vehicle List:

Please note that the car model list below is for reference purposes only. If you have any questions, please feel free to contact us.

Buying Guide

Conclusion:

Yanhua ACDP Module 41 is a powerful and flexible tool for Toyota mileage correction, offering options that suit both existing ACDP users and newcomers. Whether you’re maintaining, repairing, or replacing Toyota clusters, this module provides a safe and efficient solution.

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