2018-F150-Owner's Manual

Maintenance

TRANSFER CASE FLUID CHECK

If the coolant temperature gauge moves fully into the red zone, or if the coolant temperature warning or service engine soonmessages appear in your information display, do the following: 1. Stop your vehicle as soon as it is safe to do so. Fully apply the parking brake, shift into park (P) or neutral (N). 2. Leave the engine running until the coolant temperature gauge needle returns to the normal position. After several minutes, if the temperature does not drop, follow the remaining steps. 3. Switch the engine off and wait for it to cool. Check the coolant level. 4. If the coolant level is at or below the minimummark, addprediluted coolant immediately. 5. If the coolant level is normal, restart the engine and continue. AUTOMATIC TRANSMISSION FLUID CHECK If required, have an authorizeddealer check and change the transmission fluid at the correct service interval. See Scheduled Maintenance (page 557). The automatic transmission does not have a transmission fluid dipstick. Refer to your scheduled maintenance information for scheduled intervals for fluid checks and changes. Your transmission does not consume fluid. However, if the transmission slips, shifts slowly or if you notice a sign of leaking fluid, contact an authorized dealer. Do not use supplemental transmission fluid additives, treatments or cleaning agents. The use of these materials may affect transmission operation and result in damage to internal transmission components.

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1. Clean the filler plug. 2. Remove the filler plug.

3. Inspect the fluid level. The fluid level should be within 0.12 in (3 mm) from the bottom of the hole. 4. Add fluid through the filler hole. Use only fluid that meets Ford specifications. See Capacities and Specifications (page 412).

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