MOST Direct Access Port

The MOST Direct Access port is installed on vehicles equipped with a MOST bus such as E60/E62/E63.... The port is utilized to allow separate programming of control modules connected to the MOST bus when using the OPPS/OPS head for Programming & Coding. By using this port in conjunction with the OBD socket when programming a vehicle the overall programming/coding time is reduced.

Access to the port differs corresponding to the model.

For E60 the port (5) is located on the left side of the glove box (3) behind the strut (2). To access the connection remove the cover (1) and remove the terminating plug (4) from the cable to allow connection to the port (5).

Fig 1: Identifying MOST Direct Access Port

Courtesy of BMW OF NORTH AMERICA, INC.

Example: Referring to the illustration below - Parallel programming of an E60 using OPPS head in conjunction with short OBD cable (1) P/N 666 111 and MOST bus programming cable (2) P/N 663 121 which connects to the MOST Access Port located in the glovebox. The OPPS is connected to the network via DK LAN cable 3. 

Fig 2: Identifying OBD Cable P/N 666 111 And MOST Bus Programming Cable P/N 663 121

Courtesy of BMW OF NORTH AMERICA, INC.