The main purpose of renewal is to give the customer a sense of honor and make him feel that you are thinking of him. We sell services! The main words are summarized by myself, and each 4S shop has different policies for renewal customers. Always remember that the customer's feelings are the most important, and don't feel cheated if you buy insurance for him.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.