2018-F150-Owner's Manual

Engine Emission Control

Diesel Exhaust FluidWarning Messages and Vehicle Operations WARNINGS Diesel exhaust fluid must be refilled when low or replaced when contaminated or your vehicle speed becomes limited to 50 mph (80 km/h). In these conditions, drive with caution and refill diesel exhaust fluid immediately. If the diesel exhaust fluid becomes empty or contaminated and fluid is not replaced, your vehicle becomes limited to engine idle only once stopped. In these conditions, be cautious where you stop your vehicle because you may not be able to drive long distances ormaintainhighway speeds until you refill or replace the diesel exhaust fluid. Tampering with or disabling the selective catalytic reduction system results in severe vehicle performance limitation including eventual speed limiting to 5 mph (8 km/h). The information display shows a series of messages about the amount of diesel exhaust fluid available. A systems check displays messages indicating the amount of diesel exhaust fluid available or displays a warning message indicating the approximate distance remaining as the fluid in the diesel exhaust fluid tank nears empty. See InformationMessages (page 123).

2. Remove the diesel exhaust fluid tank filler cap. 3. Insert the spout in to the filler neck until the seal on the spout seats on to the filler neck. Pour the fluid in to the tank. When the tank is full the fluid will stop flowing automatically. 4. Return the container to the vertical position slightly below the diesel exhaust fluid filler neck. Allowany fluid remaining in the spout to drain back in to the container. 5. Remove the spout from the diesel exhaust fluid filler neck. Replace the diesel exhaust fluid tank cap. 6. Remove the spout from the diesel exhaust fluid container and replace the cap. Note: If there is diesel exhaust fluid left in the container retain it for later use. The spout is re-useable. Wash the spout with clean water prior to storage. Do not use the diesel exhaust fluid spout with any other fluid. FillingtheDiesel ExhaustFluidTank in Cold Climates Diesel exhaust fluid may freeze if the ambient temperature is below12°F (-11°C). Your vehicle has a preheating system which allows diesel exhaust fluid to operate below 12°F (-11°C). If you do not use your vehicle for an extended period when the ambient temperature is below 12°F (-11°C), the fluid in the tank may freeze. If the tank is overfilled and the fluid freezes it may damage the tank. This is not covered by the vehicle warranty.

As the diesel exhaust fluid level nears empty, the warning symbol displays and a series of

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tones and messages starting at 500 mi (800km) remainingbeforediesel exhaust fluid is depleted. The warning symbol and messages continue until you refill the diesel exhaust fluid tank.

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