Son's Dart (2013 Limited) has a Parking light error on the dashboard. In addition, the car sounds an audible alarm, and the parking light error illuminates when he presses the brakes and uses either turn signal.

Walk around of the car shows all lights work on the high and low switch, brake lights, blinkers ECT.

We have recently replaced the following:
New Battery (retested)
New Alternator
New Parking light bulbs both sides front.
New parking light bulb sockets for both fronts.

What's the next suggested steps?

Replace all rear bulbs? Take the car in to have the system tested, or fuse/s?

Dodge dealer had this car for a month looking for a parasitic draw and never found the source. This is a frustrating car.

Thanks

Mike V