Eolys Additive System Software Delete (FAP Off)
The Eolys system uses a specialized catalyst fluid to assist in the regeneration of the FAP (Diesel Particulate Filter). When the fluid runs out or the additive pump fails, the car enters limp mode and requires expensive repairs.
Signs of failure:
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Dashboard message: "Particle filter additive level too low."
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Error: "Risk of filter clogging."
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Faulty additive tank or pump (often caused by wiring corrosion).
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Permanent fault codes that won't clear even after refilling the fluid.
What is included in the service:
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Diagnostics: Scanning for error codes related to additive levels and pump functionality.
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Software Delete: Reprogramming the ECU to completely remove the additive injection logic from the engine management system.
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Counter Reset: Clearing all system-related counters and warnings from the dashboard.
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Recommendation: This service is typically performed alongside a DPF/FAP filter removal.