File Make Key

Special note

Prepare dealer key, keyless key, lost all key for CAS3+ encrypt version have some
note

Under prepare dealer key get next window  Once you get this window,
VVDI2-BMW detect this CAS is CAS3+ encrypt version.
If you sure CAS is encrypt version, but there’s no this window while prepare dealer key, the made key may not start engine. You’d better choose “File Make Key” for the error detection CAS

If you get window Please select correct type, if smart key select NO, the keyless function will not work  

Under prepare a keyless key (File Make key also have this) If you get next windows

Make sure the car have 1 keyless key at most before add
new keyless key. The lost keyless key should disabled or erased

Attention: (LAST WINDOW) 
will come with add key, this situation keyless key don’t support unlock;

Or

will come with lost all key, here the keyless key can unlock by VVDI2-BWM 

After make dealer key get next window When you get this window, the key
was made successfully. You can try to start engine directly. If not work, you need add
this key to CAS system with Add Key. Keyless can fixed with Repair Keyless Key  

After add key to CAS get next window When you get this window, the key
was add to CAS system successfully. Key can start engine now. Sometimes add new
key for CAS1/CAS2/CAS3 will cause car not start, you can follow

you need synchronize DME and CAS, synchronize CAS and ELV, insert
original key to ignition switch, run this 2 operation one by one, take key off,
insert again and try to start. If not start, try this again until car start. If you get
error in synchronize progress, ignore and continue

Under lost all key for CAS3+ encrypt version (File Make key also have this) get  next windows

For CAS3+ encrypt version, lost all key
will have a special procedure to make working key (this procedure maybe need load
EEPROM dump).

OR

By insert temp key to ignition and try start
FIRST PHOTO ,  is CAS3+ encrypt version (not ISTAP) window, at most 16 times try start.
SECOND PHOTO is ISTAP version window, at most 64 times try star

Attention: For ISTAP version, There is a few car can’t find useful combine data after
64 times try start, because the CAS lost some verify data, you need select File Make
Key->Known ISN to make working key

Attention: If you press “Yes” and get something like “Cannot find useful combine data,
please check the EEPROM file”, means the CAS lost some verify data, you need
select File Make Key->Known ISN to make working key 

​Under lost all key for CAS3+ encrypt version (File Make key also have this) get window

 In the tile you can find “Try times 5” means this is the fifth try
start. If can start, press “YES”，key made successfully. If cannot start, press “NO”,
continue next try start 
For some reason cause not find start combine data after all try, the temp key is locked,
you need unlock the key with EEPROM or key info before next time test.

Load CAS EEPROM dump get next window
 If the dump is read by BDM programmer, you can ignore this window. That means VVDI2 – BMW detected verify error in CAS system. Usually CAS3+ encrypt version have this window

Under make dealer key for CAS3+ encrypt version get

- Add key with working key select Have a working key.

- Lost all working key, there are 3 methods:  

1) Have ECU dump file, load ECU dump file to continue
2) Known ISN, input 16 bytes ISN to continue
3) Use try start method, try start method don’t need OBD communication, 
only require the original CAS EEPROM dump

Under make dealer key for CAS4 encrypt version get

- Add key with working key select Have a working key. 

- Lost all working key, there are 2 methods:  
1) Have ECU dump file, load ECU dump file to continue
2) Known ISN, input 16 bytes ISN to continue

About remote function not work in CAS1/CAS2/CAS3/CAS3+

Remote not work caused by synchronization codes not same between key and CAS, just need do the synchronize operation:

Press any button on new key,
now remote function not work,
Start engine with this key for several seconds, switch off ignition,
try remote again, works

About write back new dump after make key for CAS1/CAS2/CAS3/CAS3+:

- File make key not detected the key is disabled or not.
If your key not work,
you’d  better enable the new key position with working key (Direct enable key without get key info) 

- If select a blank position for new key,
usually don’t require write back new dump.
If not work，
test write back method 

- If select a used position for new key,
​you must write new dump back to CAS

Note

Please don’t choose 10th key for CAS3+ encrypt version

Under lost all key for CAS3+ encrypt version get window

 This window  will come after first time write key. When you get this window,
first try data was written to temp key.
Here will save a new dump contain temp key ID. Insert temp key can
switch on ignition (you can try for twice, only for cluster show),
don’t write new dump back
(CAS3+ encrypt version with new key in blank position don’t need write back)

If you try several times still can’t switch on, need write back new dump. Note:
make sure the new key position is not disabled 

MAIN MENU