Diesel Data: Automotive Repair

Symptom Troubleshooting




Audio System Symptom Troubleshooting - Radio preset memory is lost

Radio preset memory is lost

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- If only the XM stations are lost, go to XM radio preset memory is lost troubleshooting XM Radio Preset Memory Is Lost.

1. Turn the ignition switch to ON (II).

2. Turn on the audio unit and set each of the radio station preset buttons.

Do each of the buttons set properly?

YES -

Go to step 3 Symptom Troubleshooting.

NO -

- With navigation ('07-09 models): Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�
- With navigation ('10-11 models): Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�
- Without navigation: Replace the audio unit.�

3. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).

4. Test the preset buttons for proper recall operation.

Do the preset buttons recall the set radio stations?

YES -

System is normal at this time. Check the connections at the audio-navigation unit or audio unit.�

NO -

- With navigation ('07-09 models): Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.�
- With navigation ('10-11 models): Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.�
- Without navigation: Substitute a known-good audio unit., and recheck. If the symptom/indication goes away, replace the original audio unit.�