See also:

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 technicia ...

From inside the vehicle (central locking button)
Central locking button The lock buttons on the door panel can be used to lock or unlock all doors and the trunk at the same time. Press to lock and to unlock. Unlocking The vehicle can be u ...

Fuel Formulations
Do not use gasoline that contains lead as a knock inhibitor, and do not use lead additives. Besides damaging the exhaust emission control systems on your vehicle, lead has been strongly linked ...