products are effective at removing 99 percent of PM soot from the exhaust system using wall-flow substrates. As soot accumulates in the filter, a regeneration event will provide sufficient heat to oxidize the captured soot. The remaining ash is removed during regularly scheduled cleaning events based on recommendations of the engine manufacturer. DPF regen steps below apply to Mercedes Star Diagnostic C3 and C4 scanners. Connect your scanner to the diagnostic port under the dashboard. Start the engine and let it idle in Park. Power up the scanner and select the Mercedes-Benz model. Select Control Units. Schedule DPF cleaning as part of your fleet’s routine maintenance schedule, following Peterbilt’s maintenance recommendations. Never use a pressure washer to clean the DPF, as this can damage the filter. Always refer to the DPF manufacturer’s service recommendations. Fleet Managers should educate both seasoned and new drivers on the role US4NW.

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