Symptom Troubleshooting

Audio System Symptom Troubleshooting - Radio preset memory is lost

Radio preset memory is lost (with navigation)

NOTE:

- Check the vehicle battery condition first 12 Volt Battery Test.
- Check the connectors for poor connections or loose terminals.

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

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

Do each of the buttons set properly?

YES -

Go to step 3.

NO -

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.

3. Turn the ignition switch to LOCK (0) for 1 minute, and then 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. If the problem recurs, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

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.