Grand Marquis V8-4.6L Flex Fuel (2010)
Communications Control Module: Service and Repair
Audio Unit Part Number Retrieval
NOTE: The audio unit must be in radio tuner (AM/FM) mode to retrieve the part number.
1. Turn the audio unit on.
2. Press and hold preset buttons 3 and 6 for 3 seconds. The speaker walk-around test will begin.
3. Before the speaker walk-around test is complete, press preset button 6.
4. Press the TUNE UP button. This will either directly indicate the part number or it will cause the audio unit to scroll through config 1, config 2,
EEPROM, and the part number information.
If the audio unit scrolls through the information, Step 4 may need to be repeated until the audio unit part number can be recorded.
5. Record the audio unit part number.
6. Turn the audio unit off.