2011 BMW 750Lxi 4.4 CFACTORY OEM SERVICE PROCEDURE

Driver's Door Switch Cluster

When the power window switch for the window in the driver's door or front passenger 's door is operated, the signal is routed via the LIN bus to the footwell module. The footwell module drives the corresponding power window motor.

The signal is routed from the driver's door switch cluster via the LIN bus to the footwell module when the power window switches for the windows in the rear doors are operated. The footwell module sends the signal via the K-CAN2 to the junction box electronics. The junction box electronics receives the signal and activates the corresponding power window motor.

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:

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

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