Navigation Display Buttons Do Not Work or Respond Properly

Navigation display buttons do not work or respond properly

NOTE:
- Always check connectors for poor contact and poor pin fits.
- Before troubleshooting, get the navigation anti-theft code.
- Before troubleshooting, write down all the audio presets, and re-enter them after repairs are complete.
- Always verify the concern and compare the system operation to a known-good vehicle with the same software loaded whenever possible. If the concern is duplicated in the known-good vehicle, then it can be considered a characteristic of the system.

1. Turn the ignition switch ON (II).

Does the navigation display turn on?

YES - Replace the navigation unit.

NO - Refer to troubleshooting for no picture is displayed.