In a method for operating a delivery and dosing system for reducing agent solution of an SCR catalytic converter in a motor vehicle, the conveying and dosing system comprises at least one tank (10) for the reducing agent solution, at least one conveying module (20), lines (11, 12, 31), and at least one dosing module (30). According to the invention, heating of the conveying and dosing system is controlled on the basis of route-based information (80) via a planned motor vehicle route.