Strange story about PCF7952

[Samsara]

Hello.

I ordered 3 Mitsubishi keys PCF7952 434MHz from Aliexpress ( G8D-644M-KEY-E. Model Number: CE1731) , they arrived on friday and i read them with SVCI 2020 Tag tool.
No problem, they are all Mitsubishi precoded and unlocked ,ready to be programmed .

Saturday, i copied 2 Temic 11 for original Piaggio scooter key with same SVCI 2020 Tag tool , i tried them to the scooter and it's OK.

Sunday , i read the Mitsubishi keys and they are all locked as already programmed to a car !

I suspected SVCI have problem, so i read them with and old FVDI but same problem ,all locked !

During Temic reading/programming ,PCF7952 are far from antenna (more than 50 cm).

I don't understand how is this possible.
Has anyone faced this problem before?

It is possible to read/write this PCF7952 with PCF programmer?

[Daniulis]

It is possible to read/write this PCF7952 with PCF programmer?

Yes it possible with PCF Prog, but you should have correct bin file for renew it

Sunday , i read the Mitsubishi keys and they are all locked as already programmed to a car !

Are you sure you have default crypto low, crypto hi when reading those keys?

they arrived on friday and i read them with SVCI 2020 Tag tool.

In this case I would recommend to use proper tool to read those keys, like HTpro Hitag2, Tango, and etc.

[Girts]

Are you sure you have default crypto low, crypto hi when reading those keys?

Common problem - MMC uses CDP (biphase) instead of Manchester encoding.

[Samsara]

Hello.
Both, thanks for quick reply.

Yes it possible with PCF Prog, but you should have correct bin file for renew

There's files here
MITSUBISHI : G8D-644M / 434MHz https://www.transpondery.com/projects/p ... files.html

But, it's possible to read a new one (for example , original Mitsubishi key) then save file for reuse it?

Are you sure you have default crypto low, crypto hi when reading those keys?

Common problem - MMC uses CDP (biphase) instead of Manchester encoding

Abrites do not show those choices.
Here screenshots of problem key and original used key.
If i choose Password Mode or Manchester before read PCF ,it automatically switch to Cipher and Biphase .

this case I would recommend to use proper tool to read those keys, like HTpro Hitag2, Tango, and etc.

I use Tag tool occasionally and quite rarely ,not enough for bought original tools ,but PCF Prog is not expensive if i can copy original keys.

[Daniulis]

You can't copy content of PCF cuz mostly all they are locked, even if the key is virgin. You can only erase it and write new data.

[Samsara]

Ok,thank you.

PCF7952 are used in somes Mitsubishi keys ,i mean different reference part numbers.
They have differents datas or same for all ?

[Daniulis]

I don't know lad, I'm not Mitsubishi engineer

[Samsara]

Unfortunately

I must bought PCF prog to program those PCF7952 then try to start different models of cars.