Operation CHARM: Car repair manuals for everyone.
Home >> Chevrolet >> 2013 >> Sonic L4-1.8L >> Repair and Diagnosis >> Brakes and Traction Control >> Hydraulic System >> Description and Operation >> Brake Warning System
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Brake Warning System




Brake Warning System Description and Operation

Brake Warning Indicator

The instrument cluster turns the brake warning indicator ON when the following occurs:

* The instrument cluster performs the bulb check. The brake warning indicator illuminates for 5 s.

* When the Electronic Brake Control Module (EBCM) detects low brake fluid level it sends a serial data message to the instrument cluster, which will illuminate the red brake indicator.

* The Body Control Module (BCM) detects that the parking brake is engaged. The instrument cluster receives a serial data message from the BCM requesting illumination.

Driver Information Center Messages

When the Electronic Brake Control Module (EBCM) detects low brake fluid level it sets DTC C0267 and sends a serial data message to the Driver Information Center , which will display Brake Fluid Low message.

pro multis · About Operation CHARM