1. Check the condition of the wiper blades (see Section Weekly checks).
2. Check up passability of nozzles of giving of washing liquid. The jets of liquid from the nozzles should be supplied with good pressure just above the center line of the glass / lens of the block headlight. With twin nozzles, one jet is directed slightly above the center line, the second - slightly below, which provides more uniform wetting of the washed surface. If necessary, adjust the nozzles accordingly.