Buick Regal: Immobilizer

 DTC P0685-P0687, P0689, P0690, or P1682

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors D

 Lighting

Touch and the following may display: Vehicle Locator Lights Exit Lighting Left or Right Hand Traffic Adaptive Forward Lighting Vehicle Locator Lights This feature will flash the exterior lamps and allows some of the exterior lamps and most of the interior lamps to turn on briefly when on the