See also:

Key memory: door mirrors and driver's seat
The position of the side door mirrors and power driver's seat are stored in the remote keys when the vehicle is locked. The next time the driver's door is unlocked with the same remote key ...

Standby mode due to action by the driver
ACC is temporarily deactivated and put in standby mode: when the brakes are applied if the driver's seat belt is taken off If the driver's door is opened if the gear selector is move ...

Accessory installation
• We strongly recommend that Volvo owners install only genuine, Volvo-approved accessories, and that accessory installations be performed only by a trained and qualified Volvo service technician. ...