If you have a pre-owned car and the previous user has not removed their profiles and phones are still paired, a factory reset is recommended.
This article is applicable to models with Google built-in.
Note
A factory reset will remove any phones paired with your car, reset the car to factory values and remove all data and settings stored in the car.
In the centre display, swipe down from the top to reach the notification centre.
Press the currently used profile icon in the top left of the display.
Select the owner profile (the first profile created).
Go to 
> System > Reset options > Erase all data (factory reset) > Factory reset.
> System > Reset options > Erase all data (factory reset) > Factory reset.The car is now reset to the factory values. Follow the instructions in the centre display to pair your phone with the car.
Read about reinstalling and pairing the Volvo Cars app in a separate article.
Pairing the Volvo Cars app with the car
Applicable models
C40, model year 2022 and later
S60, S60 Recharge, model year 2023 and later
S90, S90 Recharge, model year 2022 and later
V60, V60 Recharge, V60 Cross Country, model year 2023 and later
V90, V90 Recharge, V90 Cross Country, model year 2022 and later
XC40 Recharge Pure Electric, model year 2021 and later
XC40 (mild hybrid), model year 2023 and later
XC60, XC60 Recharge, model year 2022 and later
XC90, XC90 Recharge, model year 2023 and later