If you want, I can:
If your query is about a technical software error rather than a journal article: r225 eid error
The immobilizer system performs a cryptographic challenge-response with the key's transponder chip. The EID is part of the secret handshake. R225 indicates the challenge response failed – the calculated value from the key/ECU does not match the vehicle’s stored value. If you want, I can: If your query