See also:

Activating/deactivating
The control panel is activated by pressing MODE when the audio system is switched on. It is switched off automatically when the audio system is switched off or by a long press on MODE. ...

Changing coolant
Coolant reservoir Normally, the coolant does not need to be changed. If the system must be drained, consult a trained and qualified Volvo service technician. CAUTION • If necessary, top up th ...

Use of Additives
With the exception of gas line antifreeze during winter months, do not add solvents, thickeners, or other store-bought additives to your vehicle's fuel, cooling, or lubricating systems. Overuse ...