Drivers who need to speak to a SunPass customer service representative may dial 1-888-865-5352. As of 2015, the phone line is staffed Monday through Friday from 7 a.m. to 7 p.m.
SunPass suggests that callers dial the customer service number between Tuesday and Friday when their matters are non-urgent. Customers may also save time by researching the SunPass website before picking up the phone. The frequently asked questions section is particularly useful and offers guidance on topics such as accessing a SunPass account and adding money. Other useful information includes instructions on how to use SunPass with a rental car and the correct way to deal with unpaid toll notices depending on whether one has a SunPass account or not.