Volvo VNL 780 Operator's Manual page 396

386 OPERATION
The Aftertreatment system is self-monitoring. When the diesel particulate filter is
becoming full and regeneration is needed, the DPF Regeneration Required icon on the
instrument cluster illuminates and the message "REGEN In Process, Enter to Delay" is
displayed. Maintain uninterrupted highway speed for an automatic regeneration. To delay
the regeneration process, if necessary, press Enter on the stalk switch. Initiate a parked
regeneration at the next stop.
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