Checking contact angle:

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Select the service function "Mounting position" with DIS or MoDiC.

The following special tool is required to check the contact angle:

Left windshield wiper: special tool 00 9 331
Right windshield wiper: special tool 00 9 230

Relieve load on wiper blades before checking contact angle. To do so, lift wiper blades briefly off windshield before placing them back on windshield.

Fig 1: Checking Contact Angle

Courtesy of BMW OF NORTH AMERICA, INC.

Wiper blades rest on markings on windshield.

Place special tools in each case at height of pivot point of wiper blade on windshield.

When correctly adjusted, no gap can be seen between special tool and wiper blade.