Buick Regal Owners & Service Manuals

Buick Regal: Exterior Lighting

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 Exterior Lamp Controls

The exterior lamp control is on the instrument panel to the left of the steering column. There are four positions. : Turns the exterior lamps off and deactivates the AUTO mode. Turn to again to r

 Automatic Headlamp System

When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically. There is a light sensor on top of the instrument panel. Do not cover the sensor; othe

 Hazard Warning Flashers

: Press to make the front and rear turn signal lamps flash on and off. Press again to turn the flashers off. The hazard warning flashers turn on automatically if the airbags deploy. Turn and Lane-Ch

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 DTC C0407

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

 Brake System Warning Light

The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both circuits need to be working. If the warning light comes on, there is a brake problem. Have the brake system insp

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