Notes on wiper arm adjustment - AH82.30-P-0001-01A

WARNING: This page is about a different car, the 2012 Mercedes-Benz C300, 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.

Model 166, 171.4, 172.4, 197, 203, 204, 207, 209, 211, 212, 215, 218, 220, 230, 240

By checking the angle of incidence of the wiper arms in parked position and reverse position it can be assessed whether the wiper arm or the wiper system is to be adjusted.

Adjusting wiper arm
In the event that the test values deviate from the tolerance range in reversing position or in park position and reversing position:

The angles of incidence are changed by "twisting" the wiper arms with the aid of the adjuster levers. The angle of incidence of the wiper arm always has to be adjusted in parked position.

In doing so the angle of incidence in parked position and reversing position changes by the same amount. The angle of incidence of the wiper arm to be adjusted is changed by at least the value of the tolerance deviation in reversing position. To make sure that both adjustment values lie within the tolerance range, the angle of incidence has to be checked again in parked position and corrected if necessary.
Adjusting wiper system
In the event that the test values of both wiper arms deviate from the tolerance range in parked position.