Control Units: Sim

Fig 1: Identifying Sim Control Units

Courtesy of BMW OF NORTH AMERICA, INC.

Located on the transmission tunnel behind the handbrake assembly, the Safety and Information Module (SIM) performs the following functions:

• Supplies voltage to the satellites and the pressure sensors (SBSL,SBSR and STVL,STVR) and supplies the voltage reserve for component activation.
• Bus Master functions for the optical bus communication system (byteflight  ).
• Gateway functions between byteflight  and K-bus.
• Triggers Emergency Call System (If Phone equipped)
• Signals the DME for deactivation of fuel pump.
• Signals the GM to switch on interior lights, hazard warnings and unlock the doors.
• Monitors the integrated acceleration sensors.
• Allows airbag activation.
• Allows BST activation.

Fig 2: Identifying Sim

Courtesy of BMW OF NORTH AMERICA, INC.