How to make BMW EWS4 key with VVDI Prog EWS4 adapter

Here’s little guide to make BMW X3 EWS4 transponder key with new VVDI PROG EWS4 adapter and VVDI2 key programmer.

Step 1: Read EWS4 Eeprom by VVDI Prog

Remove dash

Take out EWS4 immo box

Disassemble the EWS4 module

Put EWS4 module in the VVDI PROG EWS4 adapter and lock it

Connect VVDI PROG with EWS4 adapter, then connect vvdi programmer with computer with USB cable

Open VVDI Prog software

Select Type 4th Immo, BMW and chip EWS4 adapter

Check connection diagram

Click Read ID to identify the Micro and make sure that the connection is correct to avoid possible failures.

Chip initialization, make sure all chip type matches

It has to match any of them, if not, it is connected badly

Click Read to read eeprom data and save it

Step 2: Program EWS4 key by VVDI2 BMW

Open VVDI2 software

Select Transponder Programmer

Select Auto detect Transponder: PCF7935

Choose Immobilizer Data Tool function

Select region, vehicle make and immo type

Click Load EEPROM Dump

select an unused key position and press Make Dealer Key

Prepare dealer key success. Now the key can start engine.

Reinstall EWS4 module back to car.

Test the new key, remote works, car starts

Done.

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