Buick Regal 2018-2026 Service Manual / Accessories and Equipment / Lighting / Description and Operation
Buick Regal: Description and Operation
- Exterior Lighting Systems Description and Operation
- Interior Lighting Systems Description and Operation
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Exterior Lighting Systems Description and Operation
Exterior Lamps
The exterior lighting system consist of the following lamps:
Adaptive forward lighting
Automatic headlamp leveling
Automatic high beam assist
Backup lamps
Daytime running lamps
E
Interior Lighting Systems Description and Operation
Interior Lamps
The interior lighting system consist of two groups. This first group includes
lamps that may not be
dimmed.
Dome lamps
Instrument panel compartment lamp
Reading lamps
Rear compart
SEE MORE:
Lumbar/Bolster/Massage Malfunction (AL9 or AT9)
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.
Diagnostic Fault
Suspension Position Sensor Calibration
Calibration Criteria
NOTE: Remove any excess weight and do not sit in the vehicle during the
headlamp leveling sensor learn procedure. Any additional weight will
cause the calibration of the front and rear suspension position sensors to
be inaccurate and affect the operation of the headlamp leveling
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