The 11-year-old Huatai Santa Fe uses Lianchuang's anti-theft box, and the installation location of the anti-theft box is relatively secret, and the CD player needs to be removed to see it. It is paired with a Siemens engine computer. This kind of failure is encountered most often because the vehicle does not start due to the loss of data in the anti-theft box.
Open the anti-theft box, the anti-theft data is stored in the eight-legged code chip 24C02, read the anti-theft data with a programmer, the read anti-theft data is encrypted, and the modified data needs to be decrypted first.
This type of anti-theft box data verification algorithm is special.
If the data in the anti-theft box is lost to synchronize the data, you also need to read the data of the engine computer to view the synchronization data, and then modify the data of the anti-theft box to repair.
Note that the data of the engine computer is encrypted, and we need to read the wiring without disassembly, so that the data programmer can be decrypted directly, but we can't write it into the engine computer in this way, so the wiring can only view the synchronization data and password when reading the data of the engine computer. If you need to rewrite the data on the engine computer, you must remove it and read and write the data with an adapter.