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November 1, 2016 Service bulletin

The front seat ventilation fan makes a grinding noise

BMW technical service bulletin B521015 for 2016 BMW 750LI and 2017 BMW M760LI.

Bulletin number
B521015
Component
Equipment
Summary
THE FRONT SEAT VENTILATION FAN MAKES A GRINDING NOISE This Service Information bulletin supersedes SI B52 10 15 dated February 2016.. A grinding noise can be heard from the front ventilation seat, often when going around corners. The fan scrapes against the grille cover Pad foam particles are collected inside the fan causing a noise The Velcro fastener under the seat cover is displaced and hits the fan

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