2008 Ford F150 Owner Guide 1st Printing - Page 264

Driving • Finally, have the engine block heater system checked during your fall tune-up to be sure it's in good working order. How to use the engine block heater Ensure the receptacle terminals are clean and dry prior to use. To clean them, use a dry cloth. Depending on the type of factory installed equipment, your engine block heater system may consume anywhere between 400 watts or 1000 watts of energy per hour. Your factory installed block heater system does not have a thermostat; however, maximum temperature is attained after approximately 3 hours of operation. Block heater operation longer than 3 hours will not improve system performance and will unnecessarily use additional electricity. Make sure system is unplugged and properly stowed before driving the vehicle. While not in use, make sure the protective cover seals the prongs of the engine block heater cord plug. BRAKES Occasional brake noise is normal. If a metal-to-metal, continuous grinding or continuous squeal sound is present, the brake linings may be worn-out and should be inspected by an authorized dealer. If the vehicle has continuous vibration or shudder in the steering wheel while braking, the vehicle should be inspected by an authorized dealer. Refer to Brake system warning light in the Instrument Cluster chapter for information on the brake system warning light. Base, Base with Tachometer and Family Carrier instrument ! cluster BRAKE Mid, Luxury, Limited and Harley-Davidson instrument cluster ! P BRAKE 264 2008 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)