CarProg S4.4 BMW Key Programmer User Manual

About this manual

This manual details how to use the CarProg S4.4 programmer to program and modify BMW EWS1, EWS2, EWS3, and EWS3+ immobilizer systems. It covers reading and writing EWS data, adding new keys, restoring lost keys, changing EWS settings including VIN and mileage, and troubleshooting common issues like ELMOS circuit failures. The device works with empty PCF7935 transponders and original BMW keys using specific adapters and connection methods.

The manual includes step-by-step instructions for connecting to different EWS versions (EWS2 old, EWS2, EWS3) using adapters A10 and A11, and explains how to handle specific hardware issues such as processor mask 2D47J erasure or ELMOS overheating. It also provides guidance on key validation, deletion, and advanced settings modification with warnings for inexperienced users. This manual is written in Chinese.

What's inside

• System Description
• Supported Systems
• Functions
• Connecting to EWS2 (Old)
• Connecting to EWS2 (1996)
• Connecting to EWS3
• Key Programming by K-Line
• Restore Old Keys
• Delete Lost Transponder Key
• Change EWS Settings

Frequently asked questions

What does the CarProg S4.4 BMW Key Programmer do?

It is CarProg software designed for BMW immobilizers EWS1, EWS2 and EWS3 programming and transponder key generating using EWS data.

Which adapter is used to connect CarProg to EWS2 and EWS3 immobilizers?

Use the A10 adapter to connect the immobiliser to CarProg.

What is required for EWS3 immobiliser key programming by K-Line?

Use the A11 adapter and connect an external +12V power supply to CarProg.

How is a lost transponder key deleted?

Write all FFFF in the key data and perform the Write EWS operation to disable the key.