Pinpoint Test O: The Audible Switch Feedback Is Inoperative

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

O1 CHECK THE SWITCH DISPLAY
- Key in ON position.
- Turn the audio unit on.
- Press the MENU button.
- Select the FEEDBACK tab.
  
  Fig 1: Checking Switch Display
  Courtesy of FORD MOTOR CO.
- Is NONE highlighted on the audible feedback settings?
1. YES : SELECT ALL BUTTONS. TEST the system for normal operation.
2. NO : Go to O2.
O2 CHECK FOR CORRECT AUDIO UNIT OPERATION
- Disconnect all the audio unit connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the audio unit connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to Audio Unit in this article. TEST the system for normal operation after the repair.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.