Yanhua ACDP programs new keys to BMW CAS4+ (all keys lost) review

Here shares my experience how to use Yanhua Mini ACDP to do BMW CAS4+all keys lost programming. Hope it helps for Mini ACDP users!

Test: Program new keys to BMW CAS4+ (all keys lost) with Mini ACDP

Steps for matching CAS4+Key (All-key-lost):

Step 1: Read DME ISN code

Note: Different models can be read in different ways, refer to the APP help documentation for detail. Here takes reading N20 engine ISN code by drilling as an example.

Step 2: Read CAS4+ module EEPROM data

Step 3: Program Key

Step 1: Read DME ISN code

Operating ACDP module: Yanhua Mini ACDP Module3

Remove the DME and follow the help documentation to connect the N20

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Open the app and select the corresponding option to operate

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Waiting for loading application

Note: Please enter the password. If you do not have a password, click “OK”


Then click “Continue”

Select “Read engine ISN data” and click “OK”


Note: Please connect the device with the engine which needs to read the data correctly.

Then click “OK”


Waiting for reading engine data and uploading data…

Save the ISN file at below path


Check the VIN and export the ISN code


Step 2: Read CAS4+ module EEPROM data

Operating ACDP module: Mini ACDP Module1

Remove the CAS module and follow the help documentation to connect the CAS


Select BMW> CAS4/ CAS4+

Select the corresponding option according to the chip model:

ICP 9512xep100 (Mask 5M48H/1N35H)> IMMO > Read CAS4 EEPROM

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Waiting for load application

Note: Please connect the BDM adapter and connect CAS4 module according to the diagram

Then click “OK”


Waiting for detecting pins

Pin detection


Waiting for connecting adapter, decrypting chip and reading chip data

Check the VIN


Uploading data…

Note the path and name of saved data


Reading data successfully

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Step 3: Program Key

Connect the BAV adapter


Select Mode 2: Add key (All-key-lost)


Note: Please connect the BAV adapter and put in the blank key.

Then click “OK”

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Waiting for reading the key ID

Click “Please select the CAS4 data”

Select the corresponding CAS data


Downloading data…

Check the VIN info again


Select key number


Export the saved ISN code data

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Confirm ISN code


Generating dealer key, please wait…

Programming key successfully


Install the CAS back to the car.

Put the blank new keys to induction coil for key learning.

Done! So good!