Wash/wipe systems, checking

Turn on the parking lights or headlamp dipped beam and check the function of the headlamp washers.
Turn off the lights.
Check how the washer fluid strikes the windscreen.

Fig 1: Illustration For Step 226, 249, 373, 387, 488 And 570
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Lubricate the wiper arm joints with 30 06 442 White high-pressure grease paste or 30 06 582 Lubricating fluid.
Check the condition of the wiper blades. Change if necessary.