Repair Of The MOST Fiber-Optic Cables
WARNING: This page does not describe the selected car, but rather 59 other vehicles, including the 2009 BMW M5, 2009 BMW 650i, 2009 BMW 550i, 2008 BMW M5, and 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.
The MOST bus may only be repaired (spliced) once between 2 control units, otherwise the attenuation may become too much and disrupt communication.
Attenuation in the Fiber-optic line increases as the distance between controllers increases.
This diagram describes the approximate length of the fiber optic cable from one controller to the next.
The chart above provides the maximum attenuation values based on the cable length.
The MOST bus may only be repaired using the prescribed special tool (crimping pliers) and special connectors.