If a user loses their E-ZPass transponder, it is important to take prompt action to protect their account and avoid any unauthorized usage. Initially, users should check with their vehicle to confirm that the transponder is truly missing. If it has been confirmed that the transponder is lost, the next step is to log into the online account associated with the E-ZPass. Typically, users will find options to report the transponder as lost or stolen directly on the account portal. Users should also consider replacing the lost transponder, and this process may be available through the online account or by checking the current website for specific instructions. Additionally, it is advisable to monitor the account for any unusual activity following the loss of the transponder. For any urgent concerns or inquiries, users may want to consult the official Maine E-ZPass website for further guidance and contact information.