6171... Checking function of washer jets for windscreen washer system

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Switch on terminal "R" and then switch on again immediately.
Press wiper lever to "Clean windscreen" for more than 3 seconds.
Washer fluid is sprayed out of the washer jets without the wiper arms being moved.
Check function of washer jets.
If necessary, REPLACE washer jets.
Top up washer fluid.