Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Trouble Code (DTC) Information FSM-U300063
Condition
Forward Sensing Module (FSM) checks internal components and functions in the control module.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Internal signals outside permitted range occur for more than 3 seconds.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Engine running.
Substitute Value
- None.
Possible Source
- Internal fault in the Forward Sensing Module (FSM).
Fault symptom[s]
- Brake pedal/Excessive "brake pedal effort" required
- Warning lights and chimes/Front monitoring/Active safety indication/no indication
- Warning lights and chimes/Bulb failure indication/no indication
- Text window and warning symbol/Text message
Use the Manual With the Right Hardware
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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.