How to Program BMW CAS3 All Key Lost with Xprog and Tango

How-to guide: read BMW CAS3 by xprog m and write key by Tango transponder key programmer when lost all keys.

 

Step 1: Connect the wires to CAS and read the CAS

Open xprog software, click on Device and select MC9S12XD512

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Read and save eeprom data

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Step 2: Writing remote by Tango

Open tango key programmer software

Select Car Model->BMW->Cars->CAS 1-3

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Upload eeprom data read by Xprog m box

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Select a unused key position: Key 6

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and select transponder type: PCF7936, 7942,7943,7944,7945,7952

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This will generate a new file

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Tango now created the new file NEW.bin
Upload the new file to the immobilizer programmer to complete key marking.

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if you are programming remote without keyless go, you don’t need to write new file by CAS to CAS.
You just have to write remote and you can start car.

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