The windshield wiper and blade assembly should be looked at over for damages and signs of wear such as crack or damaged blade elements and loose parts. Sometimes, road film can accumulate on the blades and reduce their performance and hence should be cleaned with a solution of mild detergent. If the wiper blade elements are in bad condition namely cracked, worn, warped or the main feature of why customers may turn ill at the idea of wiping is that they may not clean adequately they need to be replaced with new ones. To remove and change the blade, raise the arm far from the window so that it can be removed, and then twist the blade out of the arm; on early models, a lever will need to be pressed and the wiper blade moved down the wiper arm and out of the hook located at the end of the arm, while for the later models a cover would have to be popped up until it was unlocked at the base; then, the Last, fix the new wiper securely to the particular arm so that, when connected, there is an audible click sound.