Mechanics use a special wiper arm puller to remove wiper armsĪ scan tool also allows an active test, which means the wiper motor can be activated from the scan tool. Another symptom is when one of the wiper arms feels loose or swings too far. The clanking noise coming from the wiper motor area when wipers operate is one of the early symptoms of a worn-out link or other component of the transmission. This will cause one or both wipers not to operate. If worn out or rusted, the link can pop out, see this photo.
The links have plastic or rubber sockets at each end that connect to the crank arms via ball joints. In this case, the wiper motor will also need to be replaced ($35-$169 part). In some cases, the seized-up wiper arm shaft can cause the wiper motor to overheat and stop working. Replacing the linkage is not very expensive: $35-$130 part plus $80-$160 labor. It is cheaper, but the proper solution is to replace the linkage. If it's possible to free wiper arm shafts out of the linkage, your mechanic may suggest an option to clean and lubricate the shafts without replacing parts. Often, one of the shafts seizes up, it's a common problem in many cars.įirst, wipers start moving slower, then seize up completely. The wiper linkage, also known as wiper transmission or wiper link assembly, has two shafts that hold the wiper arms. The wiper arm shaft seizes up inside the linkage. New wiper linkage assembly (transmission). Signs of automatic transmission problems.
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