Installing the control unit for the trailer tow hitch

• Position control unit (3) and insert into the holder until the latch mechanisms (2) lock.
• Connect connectors (1) and lock.

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up Work 

• Install the right luggage compartment wheel arch TRIM PANEL
• Install loading EDGE TRIM .
• Install the luggage compartment floor TRIM PANEL .
• ENCODE/PROGRAM control unit(s)