2018-F150-Owner's Manual

Engine Emission Control

If your journeys meet one of the following conditions: • You drive only short distances. • You frequently switch the ignition on and off. • Your journeys contain a high level of acceleration and deceleration. You must carry out occasional trips with the following conditions to assist the regeneration process: • Drive your vehicle in more favorable conditions, which youwill find at higher vehicle speeds in normal driving, on a main road or freeway for a minimum of 20 minutes. This drive may include short stops that will not affect the regeneration process. • Avoid prolonged idling and always observe speed limits and road conditions. • Do not switch the ignition off. • Select a suitable gear to ideally maintain engine speed between 1500 and 3000 RPM. OxidationCatalyticConverterand Diesel Particulate Filter System (If Equipped) WARNING The normal operating temperature of the exhaust system is very high. Never work around or attempt to repair any part of the exhaust system until it has cooled. Use special care when working around the diesel oxidation catalytic converter or the diesel particulate filter. The diesel oxidation catalytic converter and the diesel particulate filter heat up to very high temperatures after only a short period of engine operation and remain hot after you switch the engine off.

Your vehicle has a diesel particulate filter. The diesel particulate filter is an inline filter in the exhaust systemthat reduces carbon emissions by trapping exhaust particles before they reach the tailpipe. The diesel particulate filter looks similar to a traditional exhaust catalyst and is part of the exhaust systemunder your vehicle. The filter couples to a diesel oxidation catalyst that reduces the amount of harmful exhaust emitted from the tailpipe. As soot gathers in the system, it begins to restrict the filter. The systemmust periodically clean the soot that gathers inside the filter. This is carried out in two ways, passive regeneration and active regeneration. Both methods occur automatically and require no actions from the driver. During either one of these regeneration methods, you may notice a change in exhaust tone. At certain times, the information display shows various messages related to the diesel particulate filter. See Information Messages (page 123). Diesel Particulate Filter Maintenance You must properly maintain your vehicle's diesel particulate filter in order for it to function properly. Do not disregard maintenance messages that appear in the information display. Failure to follow the instructions of an informationmessagemay degrade vehicle performance and could lead to engine damage that may not be covered by the vehicle Warranty. Failure to perform active or operator commanded regenerationwhen instructed could result in a clogged diesel particulate filter. If the diesel particulate filter fills beyond the regeneration threshold, your vehicle disables the ability for active and operator commanded regeneration. This could result in irreversible damage to the diesel particulate filter requiring replacement that may not be covered by the vehicle Warranty.

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F-150(TFC)Canada/UnitedStatesofAmerica,enUSA,Editiondate:201709,SecondPrinting