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