hello good day
If you had FMB140 you can find the CAN bus connection from the vehicle and connect 140 to the vehicle CAN bus wire and try to find the exact supported program number after you will get the fuel level and fuel consumed parameters and other parameters.
If you have to know more information, I suggest reaching out to us via the VIP Helpdesk or contacting your Sales Manager/Distributor. If you don't have any contacts with our sales managers, please contact them on our official website https://teltonika-gps.com/ and click on the "Contact Us" button. When you will click, please fill out the form and submit it.
Note: as a topic, please choose "Vehicle Telematics" or you can send an e-mail with the description of your situation to info@teltonika.lt
Thank you in advance.
Kind regards.