The Navigation Clock Is Off By 1 To 3 Hours After Replacing the Navigation Unit

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

See Service Precautions Reading and Clearing Diagnostic Trouble Codes

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Do Map Matching Reading and Clearing Diagnostic Trouble Codes

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GPS antenna/cable

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Aftermarket metallic window tint

Also check for

Check and adjust the clock settings

Also check for

Check the keyless remote linking