Method and device for assisting filling with hydrogen

A refuelling assistance device operable within a system comprising:

• a plurality of vehicles, including a first vehicle, each having a pressure tank that is refuellable with fuel via a refuelling operation, wherein the refuelling operation may occur at any of a plurality of fuel stations, including a first fuel station, with or without a communication link between the first vehicle and the first fuel station, the device comprising:
• a control unit configured to:
• determine that consecutive refuelling operations of the first vehicle at corresponding different fuel stations of the plurality of fuel stations have taken place without the communication link;
• determine that consecutive refuelling operations at the first fuel station for corresponding different vehicles of the plurality of vehicles have taken place without the communication link;
• in response to determining that consecutive refuelling operations of the first vehicle at corresponding different fuel stations of the plurality of fuel stations have taken place without the communication link, cause a communication module of the first vehicle to be checked for establishment of the communication link;
• and
• in response to determining that consecutive refuelling operations at the first fuel station for corresponding different vehicles of the plurality of vehicles have taken place without the communication link, cause a communication module of the first fuel station to be checked for establishment of the communication link.