The windshield and headlight washers share a common reservoir.
The washer fluid reservoir is located on the driver's side of the engine compartment. For capacities, see Fuel tank volume – specification and volume.
Engine compartment – washer fluid
Washer fluid helps keep the windshield and headlights clean. During cold weather, the reservoir should be filled with windshield washer solvent containing antifreeze. Use Volvo Original Washer Fluid or the equivalent with a recommended pH value between 6 and 8.