Chevrolet Sonic Owner's Manual: Automatic Headlamp System
When it is dark enough outside and the exterior lamp control is in the automatic position, the headlamps come on automatically. See Exterior Lamp Controls.
The vehicle has a light sensor on top of the instrument panel. Make sure it is not covered, or the headlamps will be on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
Lights On with Wipers
If the windshield wipers are activated in daylight with the engine on, and the
exterior lamp control is in AUTO, the headlamps, parking lamps, and other exterior
lamps come on. The transition time for the lamps coming on varies based on wiper
speed. When the wipers are not operating, these lamps turn off. Move the exterior
lamp control to 
or
to disable this feature.
Daytime Running Lamps (DRL)
DRL can make it easier for others to see the front of your vehicle during the
day. Fully functional DRL are required on all vehicles first sold in Canada.
This indicator light turns on in the ins ...
Hazard Warning Flashers
(Hazard Warning Flasher): Press
and momentarily hold this button to make the front and rear turn signal lamps flash
on and off. This warns others that you are having trouble. Press and momentar ...
Other materials:
How to Inspect the Engine Air Cleaner/Filter
To inspect the engine air cleaner/ filter, remove the filter from the vehicle
and lightly shake the filter to release loose dust and dirt. If the filter remains
covered with dirt, a new filter is required.
To inspect or replace the air cleaner/ filter:
1.4L L4 Engine
1.8L L4 Engine
1. Re ...
Battery Inspection/Test
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
catego ...
Heated Oxygen and Oxygen Sensor Caution
Caution: Do not remove the pigtail from either the heated oxygen sensor
(HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will
affect sensor operation.
Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the in-line
electrical connector and the louver ...
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