Chevrolet Sonic Repair Manual: 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 inspected right away.
Warning:
The brake system might not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to a crash. If the light is still on after the vehicle has been pulled off the road and carefully stopped, have the vehicle towed for service.
- Metric
- English
(cd) brake
This light should come on briefly when the ignition is turned to ON. If it does not come on then, have it fixed so it will be ready to warn if there is a problem.
When the ignition is on, the brake system warning light will also come on when the parking brake is set. The light will stay on if the parking brake does not fully release. If it stays on after the parking brake is fully released, it means there is a brake problem.
If the light comes on while driving, carefully pull off the road and stop. The pedal may be harder to push or may go closer to the floor. It may take longer to stop. If the light is still on, have the vehicle towed for service. See Towing the Vehicle.
Brake Fluid Level Indicator Switch Replacement
Removal Procedure
Disconnect the brake fluid level indicator switch
electrical connector.
Using a small, flat-bladed tool, lift the locking
tab on the underside of the ...
Brake Warning System Description and Operation
Brake Warning Indicator
Brake Warning Block Diagram
B80Park
Brake
SwitchB20Brake
Fluid Level
SwitchK9Body
Control
ModuleP16 ...
Other materials:
Washer Fluid
Open the cap with the washer symbol on it. Add washer fluid until the tank is
full. See Engine Compartment Overview for reservoir location.
Caution
. Do not use engine coolant (antifreeze) in the windshield washer. It
can damage the windshield washer system and paint.
. Do not mi ...
Overview (Radio with Touchscreen)
z VOL
y (Volume)
Press to decrease or increase the volume.
O (Power)
Press and hold to turn the power on or off.
D (Home Page)
Press to go to the Home Page. See Home Page.
...
Hood Ajar Indicator Description and Operation
Hood Ajar Switch
The body control module (BCM) applies B+ to the hood ajar signal circuit
and monitors the voltage to determine the position of the hood. When the hood
is closed, the switch is open and voltage remains high. When the hood is open,
the switch is closed and the voltag ...
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