: In some cases, if the car has been in a minor bump, the control unit may be "locked" and require a software reset to clear crash data.
A damaged "clock spring" or rotary switch in the steering column. Blown fuses related to the safety restraint system (SRS). Moisture ingress affecting the airbag control module. Step-by-Step Diagnostic Process
If the code persists, the fault may lie in the rotary connector behind the steering wheel. Listen for clicking sounds when turning the wheel, as this indicates a snapped ribbon cable.
: If the ribbon cable is torn, the entire switch stalk assembly usually needs replacement.
To resolve the DF104 fault, you should follow a systematic approach to avoid unnecessary part replacements.
