Symptom Chart: Anti-Lock Brake System (ABS) and Stability Control

2021 Ford Edge SE, 4WDSECTION Symptom Chart: Anti-Lock Brake System (ABS) and Stability Control
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to: Diagnostic Methods .

Symptom Chart: ABS and Stability Control 

Condition Possible Sources Actions
A module does not respond to the diagnostic scan tool Fuse
Wiring, terminals or connectors
ABS module concern
REFER to: Communications Network .
The brake warning indicator is always or never on Low brake fluid level
Brake fluid level sensor
Parking brake applied
Parking brake switch
IPC concern
ABS concern
RETRIEVE and DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). If there are no ABS module Diagnostic Trouble Codes (DTCs), DIAGNOSE the brake warning indicator. Refer to: Instrumentation, Message Center and Warning Chimes .
The ABS warning indicator is always or never on IPC concern
ABS concern
RETRIEVE and DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). If there are no ABS module Diagnostic Trouble Codes (DTCs), DIAGNOSE the ABS warning indicator. Refer to: Instrumentation, Message Center and Warning Chimes .
The stability-traction control OFF indicator (sliding-car OFF icon) is always on IPC concern
ABS concern
RETRIEVE and DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). If there are no ABS module Diagnostic Trouble Codes (DTCs), DIAGNOSE the stability-traction control OFF indicator. Refer to: Instrumentation, Message Center and Warning Chimes .
ABS false activation, ABS too sensitive, ABS activates on normal stop Refer to the Pinpoint Test GO to Pinpoint Test AG 
The traction control system is inoperative or cannot be disabled Refer to the Pinpoint Test GO to Pinpoint Test K 
The Hill Descent Control™ system is inoperative or cannot be disabled Refer to the Pinpoint Test GO to Pinpoint Test R 
The hill start assist feature is inoperative, cannot be disabled or enabled Network concern
IPC concern
ABS module concern
Using a diagnostic scan tool, CARRY OUT the IPC self-test. DIAGNOSE all IPC Diagnostic Trouble Codes (DTCs). Refer to: Instrumentation, Message Center and Warning Chimes .
Using a diagnostic scan tool, CARRY OUT the ABS module self-test. DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). GO to DTC Chart: Anti-Lock Brake System (ABS) Module 
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.