Tutorial: how to unlock BMW CAS3++ istap PCF7935 remote key with Launch X431 IMMO Plus / IMMO Elite . Procedure: Go to IMMO- BMW latest software – Anti-theft key matching- Anti-theft key matching- CAS3/CAS3+ IMMO- Key Operation Read key status. Put the key to the X-prog3 coil. The current key has been locked. Go back to CAS3 key operation menu. Select Key Unlock. Put the key to be unlocked into the X-prog3 programmer. Click OK to load a copy of key data file. Unlock key successfully. Now the key can be used again. http://www.key-programmer.org/2025/09/23/unlock-bmw-cas3-istap-key-with-launch-x431-immo-plus/
Launch X431 IMMO Plus / IMMO Elite has an option to synchronize MQB immo data (get sync data for MQB48 NEC35XX locked key programming). How can I get 16-digit CS codes of the ( instrument cluster, ECM, TCM, ELV )? Here is the clue. You have to read the modules and get cs code. You can also read with other tools and get the cs code. Go to VAG IMMO software- select brand- Special Functions- Anti-Theft Function-> All keys are lost-> MQB IMMO System. If select manual mode, you can directly input the 16-digit CS codes of cluster, ECM, TCM and ELV (if keyless model), then get sync data to generate dealer key and learn key. If select Automatic mode, follow 7 steps to finish MQB48 all keys lost programming. Step 1: Obtain instrument cluster data Step 2: Obtain engine data Step 3: Obtain gearbox data Step 4: Collect ELV data Step 5: Query calculation result Step 6: Generate dealer keys Step 7: Learn key. Once read module data, load data to calculate sync code. For exam...