Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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).
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.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.