Fastag is a device that is stuck on the windscreen of a vehicle and it is used for making electronic toll payments on National and State Highways in India. If you have purchased a pre-owned car that already has a Fastag, you will need to remove it and get a new one linked to your own account.
To remove the Fastag from a pre-owned car, you will need to follow these steps:

• Contact the previous owner: Ask the previous owner to deactivate the Fastag linked to their account. They will need to login to their account and deactivate the Fastag.

1. Return the Fastag: Once the Fastag has been deactivated, you will need to return it to the issuer (banks, insurance companies, etc.) where you bought it from.
2. Get a new Fastag: After returning the old Fastag, you can apply for a new Fastag and get it linked to your own account.
3. Make sure you have all required documents: You will need to submit the required documents such as your ID proof and address proof and vehicle registration certificate(RC) to get a new Fastag.
   It is important to note that different issuer may have different procedures for removing a Fastag from a pre-owned car, so it is always a good idea to check with the issuer for specific instructions.