When the service tank light illuminates on the ERJ 175, what percentage of the tank's capacity has been reached?

When the service tank light illuminates on the ERJ 175, it indicates that the tank has reached 75% of its capacity. This warning serves as an alert for the flight crew to monitor the fuel levels closely and take necessary actions to ensure that the aircraft can maintain safe operations. Aiming for clear communication about fuel status is crucial for flight safety, and the 75% warning threshold allows for adequate planning to either refuel or manage the fuel consumption during the flight effectively. This information is essential for pilots and crew to maintain situational awareness and ensure compliance with operational protocols.