Method for making a recommendation (26) for an
upgrade measure for at least one exterior mirror (14) of a motor vehicle (10), wherein the exterior mirror (14) is designed without a folding function and / or a heating function, wherein the exterior mirror (14) has an
actuator (15) in a deactivated operating mode and / or the exterior mirror (10) is designed without a function and therefore lacks a corresponding
actuator (15), comprising the following steps: - Recording parking data (28) that describe parking behavior when parking the motor vehicle (10) and / or a vehicle (30) different from the motor vehicle (10) within a defined
parking area (32), wherein the recording of the parking data (28) is carried out by means of a sensor unit (18); - Determining a
risk factor (34) using an evaluation device (24) based on the parking data (28), which indicates a probability of damage and / or
icing of the exterior mirror (14) when parking the motor vehicle (10) within the
parking area (32); - if, during a check of the
risk factor (34), an exceedance of a specified risk limit (36) is detected, the recommendation (26) to carry out the
upgrade measure is issued to a user (12) of the motor vehicle (10), - after confirmation of the recommendation (26) is recorded, the
upgrade measure is carried out so that the folding function and / or the heating function is provided for the exterior mirror (14) of the motor vehicle (10), wherein, if the external mirror (14) has the
actuator (15) in the deactivated operating mode (38), the actuator (15) is transferred to an activated operating mode (40) that differs from the deactivated operating mode (38) by means of the upgrade measure to be carried out, and / or if the exterior mirror (14) is designed to be non-functional, the non-functional exterior mirror (14) is replaced by at least one functional exterior mirror of the same series.