These are very good comments.

If you bought the BMW OEM hitch kit, then I would first check to see if the installer remembered to connect the PDC. You can check this yourself. The PDC connect is located behind the right rear removable panel. It is easiest if you also remove the adjacent plastic trim beneath the load floor.

If it is connected, I would check the control module per diogenes comments.

If you bought an after market hitch and harness, you may have an issue. When I was researching hitch options, I noted that the Hidden Hitch model specifically stated that it was incompatible with PDC. There was some dispute about it, but it might also be your problem.

By the way, many thanks to those who posted DIY instructions for the OEM hitch install. Straightforward job, albeit an occassionally challanging one for a single person. An extra set of hands is helpful.

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