What is a 3.5 h alert on a Nissan Altima mean?

A 3.5 h alert on a Nissan Altima typically indicates a maintenance reminder related to the vehicle's oil change or general service interval. The "3.5 h" may refer to the time since the last service or a specific maintenance schedule. It's important to check the owner's manual for detailed information on what the alert specifically signifies and to address any necessary maintenance to ensure optimal vehicle performance.