2002 BMW 745LiFACTORY OEM SERVICE PROCEDURE

Intelligent Star Coupler

The transmitter and receiver module is a component that is able to convert electrical signals into optical signals and transmit them across the byteflight  fiber-optic bus.

Each satellite has a transmitter and receiver module (S/E module).

Each of the S/E modules is connected via the byteflight  with the Intelligent Star Coupler in the SIM. In the SIM, there is also a transmitter and receiver module for each satellite.

Fig 1: Intelligent Star Coupler
G03391517Courtesy of BMW OF NORTH AMERICA, INC.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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