Q：What do I have to do if I buy a new car or get new plates?
A：Log-in to this website or contact the Customer Service Center at
1-888-AUTO-TOLL (1-888-288-6865) and provide new license plate and
vehicle information as soon as possible. This information will ensure
that a customer will not receive a false violation notice.
(E-Zpass FAQ https://www.ezpassnj.com/static/faq/account.shtml#newcar)