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How to reset the service light on the Lancia Thema.

Model: Lancia Thema MK 1 - Years 1984-1994
Part: Service warning light

On the Lancia Thema, resetting the service interval is done with the engine off and the ignition in the ON position. With the instrument panel active, access the section dedicated to Service/Maintenance using the onboard controls, select the reset option, and confirm when the request appears on the display. Once completed, the maintenance warning disappears, and the mileage/time counters reset with the new values. To verify, return to the same section and check that the interval has been restored. If the option is not immediately visible, scroll through the pages of the onboard computer until you reach the service panel.

Posted on 4 December 2025 by ScegliAuto

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