Removal & Installation (3-Series - E46)
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PCM is located in box in left rear corner of engine compartment. See Fig 1. Remove 4 cover screws. Disconnect PCM connector. Remove PCM. See Fig 2. To install, reverse removal procedure. Ensure wiring harness and cover are correctly installed to prevent water entry.
Courtesy of BMW OF NORTH AMERICA, INC.
Courtesy of BMW OF NORTH AMERICA, INC.