Symptom Troubleshooting Index

Symptom	Diagnostic Procedure	Also Check for
Navigation system stays on the GPS initialization screen	System Initialization (see SYSTEM INITIALIZATION )	Audio-Navigation unit Internal defect in GPS antenna GPS antenna/cable is disconnected or damaged Aftermarket metallic window tint Software not up to date Harness/fuses/switches
Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position	Symptom Troubleshooting (see VEHICLE POSITION ICON CONSTANTLY LEAVES ROAD, MOVES ERRATICALLY, OR IS DISPLAYED VERY FAR FROM ACTUAL VEHICLE POSITION )	Audio-Navigation unit Internal defect in GPS antenna GPS antenna/cable Aftermarket metallic window tint PCM (vehicle speed pulse) Harness/fuses/switches
System always comes up in in-line diagnostic mode	Factory diagnostic screen In Line Diag (see FACTORY DIAGNOSTIC SCREEN IN LINE DIAG )
Navigation frequently asks for anti-theft code and/or needs GPS initialization	Symptom Troubleshooting (see NAVIGATION FREQUENTLY ASKS FOR ANTI-THEFT CODE AND/OR NEEDS GPS INITIALIZATION )	Loss of voltage or poor ground (G402) Audio-Navigation unit Software not up to date Low battery voltage Harness/fuses/switches
GPS icon is white or not shown	Symptom Troubleshooting (see GPS ICON IS WHITE OR NOT SHOWN )	Audio-Navigation unit Internal defect in GPS antenna Aftermarket accessories connected to the system GPS antenna/cable Aftermarket metallic window tint Harness/fuses/switches
Vehicle position icon wanders across the map when driving (does not follow a displayed road) or map or vehicle ICON spins	Symptom Troubleshooting (see VEHICLE POSITION ICON WANDERS ACROSS THE MAP WHEN DRIVING (DOES NOT FOLLOW A DISPLAYED ROAD) OR MAP OR VEHICLE ICON SPINS )	Audio-Navigation unit GPS antenna/cable Aftermarket metallic window tint PCM (vehicle speed pulse) Internal defect in GPS antenna
No picture is displayed	Symptom Troubleshooting (see NO PICTURE IS DISPLAYED )	Software not up to date Audio-Navigation unit Navigation display unit Harness/fuses/switches
Picture has lines, rolls, or is blurry	Symptom Troubleshooting (see PICTURE HAS LINES, ROLLS, OR IS BLURRY )	Aftermarket accessories connected to the system Audio-Navigation unit Navigation display unit Harness/fuses/switches
Picture is missing a color or tone or is an odd color	Symptom Troubleshooting (see PICTURE IS MISSING A COLOR OR TONE OR IS AN ODD COLOR )	Software not up to date Audio-Navigation unit Navigation display unit Aftermarket accessories connected to the system Harness/fuses/switches
Display day/night mode does not work or does not work properly	Symptom Troubleshooting (see DISPLAY DAY/NIGHT MODE DOES NOT WORK OR DOES NOT WORK PROPERLY )	Audio-Navigation unit The gauge brightness level is set to High in day or night mode Navigation display unit Gauge control module (CAN) The navigation display brightness is not set to Auto mode Harness/fuses/switches
System locks up or freezes constantly	Symptom Troubleshooting (see SYSTEM LOCKS UP OR FREEZES CONSTANTLY )	Audio-Navigation unit Software not up to date Harness/fuses/switches
Voice guidance cannot be heard, is broken up, or there is static	Symptom Troubleshooting (see VOICE GUIDANCE CANNOT BE HEARD, IS BROKEN UP, OR THERE IS STATIC )	Volume or voice feedback setting (see Navigation Manual) Audio-Navigation unit Stereo amplifier Harness/fuses/switches
Voice control does not work/respond	Symptom Troubleshooting (see VOICE CONTROL DOES NOT WORK/RESPOND )	Audio-Navigation unit Microphone Harness/switches HandsFreeLink control unit
Navigation cannot control HVAC by voice command	Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL HVAC BY VOICE COMMAND )	Software not up to date Harness/fuses/switches Wrong audio-navigation unit (model code) B-CAN DTCs
Navigation cannot control audio system	Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL AUDIO SYSTEM )	Audio-Navigation unit Harness Software not up to date
Interface dial buttons do not work	Symptom Troubleshooting (see INTERFACE DIAL BUTTONS DO NOT WORK )	Audio-Navigation unit Navigation display unit Interface dial Harness/fuses/switches
Today's Destinations button is dim and not selectable in the Enter destination by screen (grayed-out)	The customer has not entered a group of locations for Today's Destinations. This is normal. The button is only selectable if the customer is using this function	See Navigation Manual
Previous Destinations button is dim and not selectable in the Enter destination by screen (grayed-out)	The vehicle may be new, or the customer deleted the destination. Without a stored previous destination, the system can't route to a previous destination. Enter a destination, and allow the system to route to it. After the trip, the Previous Destinations button will be selectable
Address cannot be found or system gives poor routing	Verify proper operation and system limitations using the Navigation Manual See Answering Customer Questions about Navigation Coverage	Database limitations (address not in database) Software not up to date Older database
Rearview camera image does not come on or work properly	Symptom Troubleshooting (see REARVIEW CAMERA IMAGE DOES NOT COME ON OR WORK PROPERLY )	Check software for latest up-dates No backup signal Wrong disc installed in navigation unit
Rearview camera image does not change	Symptom Troubleshooting	No backup signal Harness
The map will not display the Southern portion of the U.S. or the Northern parts of Canada	North American coverage is different for U.S./Canada markets. See the Version diagnostic screen (see VERSION ) for details on coverage differences	Software not up to date
Navigation display stays on with the ignition switch in LOCK (0)	Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL AUDIO SYSTEM )	Harness/fuses/switches Aftermarket accessories connected to the system
Navigation system will not go beyond the disclaimer screen and displays the OK button	Also see Interface dial buttons do not work	Software not up to date Audio-Navigation unit
The navigation anti-theft code card is lost or missing	See Anti-Theft Feature (see ANTI-THEFT FEATURE )
The vehicle icon lags behind when the vehicle turns	See Self-Inertial Navigation Limitations (see SELF-INERTIAL NAVIGATION LIMITATIONS )	Aftermarket accessories connected to the system GPS antenna/cable Aftermarket metallic window tint
Navigation screen is darker than normal or takes time to brighten when it is cold	See LCD UNIT LIMITATIONS	Compare to a known-good vehicle
The navigation clock is off by 1 to 3 hours after replacing the audio-navigation unit	See Service Precautions (see AUDIO-NAVIGATION UNIT AND HDD SERVICE PRECAUTIONS )	Do Map Matching (see MAP MATCHING ) GPS antenna/cable Aftermarket metallic window tint Check and adjust the clock settings Check the keyless remote linking
Time is not correct	Reset Time Adjustment in set-up See Service Precautions (see AUDIO-NAVIGATION UNIT AND HDD SERVICE PRECAUTIONS )	Software not up to date Reset Time Adjustment in set-up A defective GPS receiver in the audio-navigation unit
A POI cannot be found	See How to Answer Customer Questions about Navigation Coverage (see HOW TO ANSWER CUSTOMER QUESTIONS ABOUT NAVIGATION COVERAGE )	Software not up to date The database may be out of date. Confirm the POI exists in a current production vehicle
A specific city cannot be found	See How to Answer Customer Questions about Navigation Coverage (see HOW TO ANSWER CUSTOMER QUESTIONS ABOUT NAVIGATION COVERAGE )	Software not up to date The database may be out of date. Confirm the address exists in a current production vehicle
Error messages are displayed	See Error Message Table (see Error Message Table )	Software not up to date HDD not transferred during an audio-navigation unit replacement The database may be out of date. Confirm the address exists in a current production vehicle
No traffic information or poor RDS-TMC reception or interference (USA models)	Symptom Troubleshooting (see NO TRAFFIC INFORMATION OR POOR RDS-TMC RECEPTION OR INTERFERENCE (USA MODELS) )	Antenna lead/sublead short or open in the wire Aftermarket window tinting