The Navigation Clock is Off by 1 to 3 hours After Replacing the Audio-Navigation Unit

The navigation clock is off by 1 to 3 hours after replacing the audio-navigation unit

See Service Precautions How To Troubleshoot The Navigation System

Also Check for

Perform Map Matching How To Troubleshoot The Navigation System

Also Check for

GPS antenna/cable

Also Check for

Check and adjust the clock settings