Coding Plug Identification - E32/E34: Notes
WARNING: This page does not describe the selected car, but rather 333 other vehicles, including the 2007 BMW Z4, 2007 BMW X5, 2007 BMW X3, 2007 BMW M6, and 2007 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
The E32/E34 Instrument cluster coding plugs progressed through three variations of design.
Start of production up to 2/89.
The original E32/E34 instrument cluster coding plug was installed in the wiring harness connector (X16) which plugged into the instrument cluster. This plug contained all of the vehicle specific coding data for the instrument cluster and retained accumulated mileage and service interval information.
In the event that the instrument cluster must be replaced the coding plug is reused with the new cluster. By reusing the old/original plug the mileage in the odometer does not change, since the coding plug is able to retain the information.
- If the coding plug must be replaced, the total mileage and Service Interval information will be lost.
- Replacement coding plugs pre-coded by part number and are available from the parts department.