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Launch X431 IMMO Elite Program BMW CAS3 Key via EEPROM

Launch X-prog3 BMW IMMO software V10.18 adds CAS2, CAS3/3+ IMMO system file generated key function.

 

Here we will show how to add a BMW CAS3 key via eeprom on bench using Launch X431 IMMO Plus or IMMO Elite.

Require BMW IMMO software V10.18 and above.

Select BMW->Anti-theft key matching->CAS3/CAS3+ IMMO->MCU operation-> select mcu type, here select OM23S

Launch X431 IMMO Elite Program BMW CAS3 Key 1

Launch X431 IMMO Elite Program BMW CAS3 Key 2

Launch X431 IMMO Elite Program BMW CAS3 Key 3

Launch X431 IMMO Elite Program BMW CAS3 Key 4

Launch X431 IMMO Elite Program BMW CAS3 Key 5

Check connection diagram

Remove CAS3 module from car

Launch X431 IMMO Elite Program BMW CAS3 Key 6

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Connect X-prog3, MCU V1 adapter with CAS3 module follow the wiring diagram

Launch X431 IMMO Elite Program BMW CAS3 Key 9

Read Chip IDThen Backup eeprom data

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Read and backup FLASH data

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Go back and select Key Operation->Key Learning->File Generate Key->0M23S

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Select the eeprom data just saved

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Select an unused key position and press Generate dealer key

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If add key press Yes because we have a working key, if all keys lost you will need ISN code.

Select Yes to confirm there is a working key.

Put the working key to the x-prog3 programmer

Launch X431 IMMO Elite Program BMW CAS3 Key 19

Then put a new key to be programmed to the x-prog3 programmer

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Generate dealer key successully.

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Save new eeprom data.

Write new eeprom file to CAS. If CAS3 is ISTAP version, no need to write new eeprom back to CAS.

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Go back to BMW->Anti-theft key matching->CAS3/CAS3+ IMMO->MCU operation-> 0M23S->Restore EEPROM data

Launch X431 IMMO Elite Program BMW CAS3 Key 24

Write new eeprom data back to CAS module.

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Restore data successfully.

Now you can test the new key.

www.obdii365.com

http://www.key-programmer.org/2024/03/12/how-to-program-bmw-cas3-key-with-launch-x431-immo-elite/

Video: https://youtu.be/qWgdNxy-eVI

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