3 Ways to Program BMW EWS4 Key using EWS4 Adapter

As titled, here obdii365.com introduces 3 methods to program BMW EWS4 (EWS4.3 & EWS4.4 transponder) using BMW EWS-4.3 & 4.4 IC adapter adapter without soldering.

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Method 1:

Program EWS4 key with AK90+/AK91 & EWS4 adapter 

Remove EWS4 immo box

Connect EWS4 board to EWS4 adapter and AK90 key programmer

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Select MCU 2L86D and Read EWS

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Read data success and save data

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EWS Analyse

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You should be at the main screen with all the numbers and letters on, place your virgin/new key into the slot on the AK90 and select write key

Select the slot and select write key you will get a warning making sure that you have placed key in slot just select yes

After aprox 1-2mins you should see confirmation that the keys data is coded

Put EWS4 unit back to car.

 

 

Method 2:

Read dump with R270 & Write key with key programmer

Again remove EWS4 immo box

Connect EWS4 board with EWS4 adapter and R270 BDM programmer

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Open R270 in-circuit programmer software

Select correct MCU: 2L86D

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Press Read

Software requests to check pin state
Press YES

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Pin check and MCU correct

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Press Yes and read begins

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Save dump file (file containing rolling key codes)

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Open your key programmer software, i.e AD-900 pro or other programmer can be loaded dump file

Select EEPROM and upload bin file read by R270

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Software opens correct module 063 for BMW EWS4

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Key slot 1 to 4 are listed

To avoid manufacturer conflict, select highest available slot 4

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Insert blank 7935 transponder into AD900 and press Program button

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Data is sent to the AD900
Transponder is produced to start vehicle

Then reinstall EWS4 immo box back to vehicle.

 

 

Method 3: Program EWS4 with vvdi prog

Read EWS4 EEPROM with VVDI Prog using Xhorse EWS4 adapter

Then program key with VVDI2 BMW key programmer.

Reference blog:

How to make BMW EWS4 key with VVDI Prog & EWS4 adapter

 

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