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How to Troubleshoot the Navigation System

Service Precautions

- If the navigation unit needs to be replaced, you can back-up the navigation data and transfer it to a new navigation unit. See Save users memory (KQ model).
- When the battery is disconnected, the internal GPS clock is reset to 0:00. The clock will reset to the correct time after the system finishes GPS initialization.
- Before disconnecting the battery, make sure you have the anti-theft codes for the audio system and the navigation system, and write down the audio presets. Also obtain any PGM-FI or transmission DTCs and freeze frame date (which will be lost when the ECM/PCM loses power).
- After reconnecting the battery, you have to wait to get the initial signal from the satellite. It will take from 10 to 45 minutes.
- Adjust the setup clock settings (time zone and daylight savings) in the navigation system.
- Before returning the vehicle to the customer, enter the anti-theft codes for the audio system and the navigation system.