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BMW X3 2004 EWS4 key programming

Here is the post about how to program a new BMW X3 2004 key and do eeprom job with Xhorse vvdi (VVDI2 and VVDI-Prog)

Q: Can i make a x series key with the vvdi2 and how? (it’s x3 2004)

A: Yes is ews4 (eeprom job )

Q: Taking the ecu out?

A: Not the ecu ...taking immo box out ...its a white box under the steering wheel same size as a pack of cigs.

Q: Do i need any adapter for that?

A: you just need open vvdi prog ,select ews4 and will show you the connections....solder it and you are good to read it

Q: And does it give you a key code like the cas’s

A: no , is it your first isn’t it?

Q: yes it is. Is this what i need?


A: thats not for ews4...VVDI prog have its own EWS4 adapter, so does the AK90

I mean there is ews4 incircuit connect by vvdi prog. Look here:

Q: how is the procedure

A: Put the ESW4 module in the adapter and lock it


To solder


Learn device details:

Xhorse vvdi2:

Xhorse VVDI2 full verison comes with Basic Function + VW + BMW + Porsche+ AUDI Generation 5 function+BMW OBD Fucntion+BMW CAS4+ PSA functions +Tango + J2534, and add VV-03 VAG copy48, MQB odometer correction.

Xhorse VVDI Prog:

VVDI Prog programmer can read BMW ISN and NEC, MPC, Infineon etc chip.

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