If the previous owner of your car has not removed their profiles and connected phones, a factory reset of the car is needed. You can do this yourself via the car's centre display or ask the previous owner to do it via the Volvo Cars app.
This guide covers common issues and solutions when trying to sign in to the Volvo Cars app.
If you're having trouble connecting your Volvo ID to your car there are a number of steps you can take to help solve this problem.
Information about managing your Volvo ID account and how to delete it when ending ownership of your car.
All cars have a unique identification number, VIN.