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.
Issue & Fix: When the YANHUA Mini ACDP 2 reports a "Clear ISN data error" while clearing the BMW 8HP E84 ISN via OBD, resolve the operation by activating Module 40 authorization and switching to the "8HP Reset EWS (E/F/G Chassis, bench)" function.
Technical Explanation
The OBD method is insufficient for this specific ISN clearing task, necessitating a direct bench connection to facilitate the reset.
This guide will show you how to export folders from the Yanhua ACDP app on an iOS device. Before starting, make sure your ACDP app is updated to version 3.6.5 or above.
Step 1: Check Your App Version
Launch the ACDP app.
Go to [Me] → [About].
Confirm that your app version is 3.6.5 or higher.
Step 2: Open “My File”
Tap [My File].
All vehicle model folders you have worked on will appear on this page.
Locate the folder you want to export and prepare to compress it.
In this tutorial, we use the BMW folder as an example.
Step 3: Compress the Folder
Long-press the BMW folder.
Select [Zip].
A message will appear:
“A zip file has been created in the current directory: bmw.zip.”
Long-press the newly created bmw.zip file and tap [Share].
Step 4: Export Through Third-Party Software
Choose a third-party app for export.
In this example, we select WeChat.
Choose a contact and send the zipped file.
For a full demonstration, watch the video tutorial:
This guide explains how to export vehicle model folders from the ACDP Android app.
Step 1: Preparation
Ensure your ACDP application is updated to Version 3.0.142 or above. Launch the app and navigate to the [Me] tab, then tap [About] to verify your version.
Step 2: Access Your Files
From the [Me] section, tap [My files]. You will now see a list of all vehicle model folders you have previously worked on.
Step 3: Compress the Target Folder
Locate the specific folder you wish to export (e.g., BDC2_ICP_OBD_IMMO). Tap the icon on the right side of that folder and select the [Zip] option from the menu.
You can edit the name of the compressed file if needed. Confirm by tapping [OK].
Step 4: Share and Export
Once the compressed .zip file appears in the folder list, tap the icon on its right side and choose [Share].
You can now export the file using any third-party application. This tutorial uses WeChat as an example—simply select WeChat and send the file to a contact or group.
This is a tutorial on disassembling the VW MQB 5D odometer. After that, we can install the Yanhua R7F701401/21-5D Interface Board to read and write data without soldering. By working with ACDP2 + Module 34, we can make data reading and writing safer for VW Golf 8, Teramont, Viloran, Tavendor, Lamando, Tiguan L, etc.
How to disassemble VW MQB 5D ODO?
Since the MQB5D odometer display and the housing are sealed with glue, you must be careful when disassembling them.
Based on these 3 buckle positions, determine the instrument's positive direction. To disassemble the instrument, it's recommended to use a sharp art knife.
1) Start from the lower left corner of the display.
2) Cut the sealant under and on both sides of the instrument.
3) Cut the sealant above the instrument.
Please Note: The below and on both sides.
The blade should not be inserted more than 8mm deep to avoid scratching the inside of the odometer.
When cutting the sealant, be careful not to tilt the blade upward.
Do not pry the blade up and down.
Be careful and slow when cutting.
When you're working on the top of the odometer, be careful of the wiring in the middle. So the blade should not be inserted more than 4mm deep at this position to avoid cutting the display cable.
After the sealant is cut, flip the display open. Place your fingers on the left and right grooves below. Remove the backlight panel and heat sink.
This is a tutorial on how to program BMW CAS3++ all keys lost in ICP attempt to start mode with Yanhua ACDP-2 BMW. The procedure mainly works on Module 1.
Mini ACDP>> BMW >> CAS1~4 >> CAS3/CAS3+ >> ICP Mode >> MC9S12XDP512 >> IMMO
Click Help to complete the connection between ACDP and CAS ECU.
Step1. Read the CAS data
Please use the ACDP standard power adapter(voltage+ 12V, current > = 2.5A)
Please follow the wiring diagram to connect the ACDP. BDM adapter and CAS ECU.
Confirm vehicle info, click OK.
The backup file succeeded.
Step2. Generate Dealer Keys
All-key-lost(try 16 times or 64 times) >> OK
Connect the ACDP and BAV adapter according to the diagram and insert a blank key.
Verify key info.
Selected the " Original " data, and paid attention to the date and time of backing up files.
Verify vehicle info.
Select a blank key position >> Confirm if the current key is a Keyless go
Is the current key a Keyless Go?
Warning:
1. Only 2 Keyless Go are allowed for one car.
2. Please disable or delete the lost Keyless Go before adding a new Keyless Go.
3. Ensure there is one Keyless Go at most in the CAS before generating the key.
4. The Keyless Go will not be unlocked once generated.
5. After the keyless go is successfully generated, the method of gate learning cannot be used, and the generated data needs to be written back to the CAS for the keyless to take effect.
Remote key >> OK
The current CAS version type is the CAS3+ISTAP4* version. Generating the key requires up to 64 attempts. Please enter the number of current attempts.
Click on settings >> Enter 1 >> OK
Generate dealer key completed.
Load CAS onto the vehicle and verify the key function, there are 2 ways of operation at this time:
1. If the newly generated key can open the switch, click OK and follow the steps.
2. If the key cannot open the switch, remove CAS. Learn the key by reverse-writing ALL data to ensure that the key can open the switch.
Here's clicking "Cancel".
The backup file succeeded.
Return to the previous step.
Remove the CAS from the car.
Step3. Write CAS data
OK >> OK
Please follow the wiring diagram to connect the ACDP, BDM adapter, and CAS ECU.
OK >> Selected data named after "ALL_LOST".
Write data succeeded.
Load CAS back into the car, and verify that the key can start the car.
Go back to Step 2. Generate Dealer Keys
Repeat the previous steps.
Select a blank key position >> Remote key >> OK >> Click on settings >> Enter 2
Please try to start the car with the newly generated key.
Please install the CAS module on the car and start it with the current key. Click Yes if you can start the car. Click No if you can not start the car. If the car can not start, remove the key from the ignition switch and put it into the programmer before you click No.
Can the current key start the car? No
The number of current attempts is 03; click OK.
Generate dealer key completed.
Please try to start the car with the newly generated key.
If the newly generated key cannot start the car, put it back into the BAV adapter and click No.
Continue the fourth attempt until the new key can start the vehicle.
Yanhua Module 30 & Module 30 Authorization has been newly released, which supports doing Volkswagen/ Audi DQ500(0BH Continental) gearbox mileage correction without soldering. Including Audi Q3(before 2016), and VW Multivan/ Tiguan vehicle models.
Users who already have Module 19 or Module 25 can directly purchase the authorization. Other users can just purchase Module 30 to work with the Mini ACDP basic module.
Module 30 Features
1. No soldering, no risk. It supports quickly identifying the vehicle transmission model by OBD without having to remove the computer.
2. It supports adjusting mileage by plugging the special interface board into the car, no need to remove the TCM.
Module 30 Accessories
Module 30 APP Operation Steps
Mini ACDP >> VW >> Gearbox mileage correction >> VW/ Audi >> DQ500(0BH CONTINENTAL)
Here allows us to identify, mileage correction(auto mode/single-step mode), time correction(auto mode/single-step mode), read EEPROM, and write EEPROM.
How to connect Module 30?
1. Prepare ACDP, DB15-LAN adapter, interface board, and gearbox.
2. Connect the interface board correctly to the gearbox interface.
3. Short the CAN resistor on the DB15-LAN adapter to the "CAN-R".
4. Connect ACDP, DB15-LAN adapter, interface board, and gearbox.
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