In this article, we are going to show you how to add a new key for Mercedes W203 using Launch X431 IMMO PLUS Tablet.

Connect X431 IMMO PLUS, X-PROG3, and OBD port.

Select
IMMO>>MERCEDES-BENZ

Select
Anti-theft Password Reading>>On the Vehicle>>Calculate Password By Adding Key>>Automatic Identification
Insert key as required.


Online calculate key password.


Save EIS file.
Select
Anti-theft Password Reading>>Generate BE Key File
Load EIS file.

Write key file to new key.


Done! That’s how to add a new key for MB W203 using X431 IMMO PLUS and X-PROG3 Programmer.
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