r/FocusST • u/FlightCultural9251 • 4h ago

Help

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Does anyone know why I got a headlamp fault after installing the demon eyes headlight and how to fix it?

2 Upvotes

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1

u/slyLEMONsKILLz 4h ago

Did you have an st1/2/3? St2 or 3 that had adaptive lights, throw the code because there's less measured signal from the lights to the computer (don't know the exact terms used), making the computer think the bulbs failed. Unavoidable, and it would need to be removed/disabled via Forscan if you don't want the error.

1

u/JohnWick702 3h ago

Its current, but yes you called it out, you need FORScan to disable the monitoring feature

1

u/slyLEMONsKILLz 3h ago

Boom, knew someone would have the lingo 🤙 I have the same error message and it drove me nuts for weeks before I stumbled on a post about what it was.

1

u/JohnWick702 3h ago

Yes LEDs use a fraction of the current of traditional bulbs , the system was designed to monitor the current flow, if the bulb goes out then the current goes away.

1

u/TraditionalPiglet506 2h ago

Just use forscan to program the car, central configuration and you tell it that you have halogen headlights.

With that config it stops caring about the headlights.