Fix YANHUA ACDP Module 2 FEM "Operation Timeout, Retry" Error

Issue & Fix: A YANHUA ACDP Module 2 stopped USB polling during FEM preprocessing and, after waiting about 20 minutes, displayed the error "Operation timeout, retry". To resolve the issue, first identify the FEM by OBD and check whether the recognized version and code are normal, then continue with the corresponding action.

Technical Explanation

The next step depends on whether the version and code identified by OBD are recognized correctly.

Diagnostic / Action Steps

1. Identify the FEM through OBD. 

2. Check whether the recognized version and code are correct. 

3. If both are recognized correctly, proceed directly with key programming. 

4. If the recognized information is abnormal, restore the following options on Mini ACDP:

Recover EEPROM Data 

Recover Coding Data

Final Result

The "Operation timeout, retry" error is cleared, allowing the key programming procedure to continue normally.

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YANHUA ACDP Module 46: MB VGS4-0 NAG2 TCU Virginizing & Data Transfer

What's New: YANHUA ACDP has added Module 46, supporting Mercedes-Benz VGS4-0 NAG2(4-4) TCU virginizing and personalized data transfer for TCU replacement. The module combines coding, reading, virginizing/data transfer, programming, and coding writing in one workflow, eliminating the need for third-party programming or coding devices. After data transfer, the replacement TCU can be installed and used directly.

Supported Type

MB VGS4-0 NAG2(4-4)

Compatibility & Licensing

Compatible with ACDP and Mini ACDP2.

Users who already own ACDP Module 16 only need to purchase the Module 46 license.

Functions

Read the original coding

Read the original IMMO

Refresh donor data

Write an original IMMO to the donor

Write original coding to the donor

Program the TCU

Support TCU's virginizing and personalized data transfer

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