I am a snowbird spending summers in Michigan. In the summer of 2014 I brought my 2013 Mustang 5.0 into the service department to diagnose the lack of AM reception on the radio. I explained at length the lack of reception to the Service Manager. I was called later that day and informed that the technician who examined my problem concluded that the vehicle had a bad speaker. A new speaker was installed. When I came to pick up my car the poor reception on AM persisted. I questioned the diagnosis of a bad speaker as I had good reception on FM and XM. The service manager suggested that I talk to the technician who was standing there. When I questioned him about the speaker diagnosis, he asked me what was wrong with the radio. Apparently the problem had not been properly conveyed to him. I told him poor reception, and he listened to the radio and advised that I needed a new radio. I was advised later that a new radio was installed yet upon picking up my vehicle I still found poor AM reception and all of my saved channels were the same.(Is this possible if a new radio is installed?) I then questioned the service manager about the continued lack of performance. He advised he would call Ford Motor Company technical support. He called me back and advised that The Ford rep suggested he play the radio next to a new vehicle to see if there was any difference. He then informed me that the new car AM reception was equally as bad as mine and that Ford apparently had bad radios in their Mustangs.
I called Ford Customer Service who suggested I find another service facility. This June upon arriving in Michigan, I removed my car from storage and took it to Fred Grande Ford in Richmond MI, 35 miles from my house. They immediately diagnosed the problem using symptom chart PPT A and replaced the "Antenna Stanchon Module". AM reception is now perfect.
Shame on Northgate Ford. Poor service communication, Lack of Expertise and questionable ethics relating to what they tell the customer.