Charging system and vehicle

A charging system comprising:

• a controller;
• an in-vehicle device provided in a vehicle;
• a notification unit provided in the vehicle;
• an operation unit provided in the vehicle;
• and
• a wireless communication unit provided in the vehicle,
• wherein the controller comprises
• a processor, and
• a memory connected to the processor, and
• wherein the processor is configured to execute processing comprising
• identifying a charging station at which the vehicle is scheduled to perform charging,
• deriving a charging time required for the charging of the vehicle before the vehicle arrives at the charging station,
• deriving an update time required for update of a control program of the in-vehicle device through the wireless communication unit before the vehicle arrives at the charging station,
• making a notification of the control program as an update target through the notification unit when the update time is equal to or less than the charging time, and
• updating the control program when the operation unit receives an operation of permitting the update of the control program.