See also:

Removal
Switch off the ignition, remove the remote key from the ignition slot and wait at least 5 minutes before disconnecting the battery so that all information in the vehicle's electrical system ca ...

Activating/deactivating warning signals
The collision warning system’s visual signals are activated automatically when the engine is started if the collision warning system is switched on. The audible warning signal can be activated/ ...

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. ...