Diagnostic Procedure

Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position

Symptom Troubleshooting Symptom Troubleshooting

Also Check for

Audio-navigation unit

Also Check for

Internal defect in GPS antenna

Also Check for

GPS antenna/cable

Also Check for

Aftermarket metallic window tint

Also Check for

ECM/PCM (vehicle speed pulse)

Also Check for

Harness/fuses/switches