Problem:
Need to unlock/renew used keys for Opel/Vauxhall G. When I read the transponder with xhorse vvdi key tool max, they are identified as PCF7941A.
So far, I haven’t been able to successfully unlock/renew a single one of them.
Is there some other equipment that can handle these PCF7941A remotes better?
Here are some photos of the remotes/PCBs:
User feedback:
I tried with VVDI prog and other devices like KD, XH, K2 and so on… but for Opel only worked key from Insignia. Transponder was unlocked and can be programmed, but remote part never worked (dead).
Other remotes from Corsa D, Astra H or J didn’t worked.
Opel remotes can’t be unlocked and reused again.
Even if you unlocked them remote part will never work again.
Those new remotes are really cheap and unlocking doesn’t make sense anymore.
Only to be used for parts.






