Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Display day/night mode does not work or does not work properly

Display day/night mode does not work or does not work properly

NOTE:

- Check if the Day mode color is set to same as the Night mode color (refer to the navigation system manual).
- Check the vehicle battery condition first 12 Volt Battery Test.
- Check the connectors for poor connection or loose terminals.
- Full brightness on the instrument panel brightness control with the head lights turned on causes the system to stay in the day mode, even when the lights are on.

1. Make sure the instrument panel brightness control is not on full brightness. Turn the headlights on, and adjust the dash brightness to the middle range.

2. Change the day/night mode under Set-up to AUTO, and recheck.

Does the display change to day and night modes when turning the headlights on and off?

YES -

The system is OK at this time.

NO -

Go to step 3.

3. Go into the System Diagnostic Mode, select Detail Information & Settings, and use the Car Status test to check for an ILL signal.

Is the ILL signal OK?

YES -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

Check the ILL+ circuit between the audio-navigation unit and the No. 29 (10 A) fuse in the under-dash fuse/relay box.