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HOMESERVICE MANUALSFORD2018F-450 SUPER DUTY LARIAT, 4D PICKUP CREW CAB, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - DESCRIPTION & OPERATION (DIESEL)POWERTRAIN CONTROL SOFTWAREENGINE SHUTDOWN TIMER
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WD

Engine Shutdown Timer

2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WDSECTION Engine Shutdown Timer

Vehicles equipped with the engine shutdown timer have an instrument panel cluster message and an audible alert that notifies the driver 30 seconds prior to engine shutdown. When the engine shutdown occurs, the PCM broadcasts a shutdown message to all the vehicle modules. One minute after the engine shutdown occurs, the body control module (BCM) (F-650/F-750) or the circuit deactivation ignition module (CDIM) (all others) electrically changes the ignition state to OFF and the vehicle goes into the normal delay accessory mode.

Engine shutdown occurs under the following conditions:

  • Vehicle speed below 1.6 km/h (1 mph)
  • Engine coolant temperature is greater than 15°C (60°F)
  • Transmission in the PARK or NEUTRAL position
  • Engine shutdown occurs in 5 minutes with the parking brake applied
  • Engine shutdown occurs in 15 minutes without the parking brake applied
  • The engine shutdown time may be increased in regeneration mode or scan tool mode (60 minutes maximum)
  • Brake or accelerator pedal application in the 30 second window resets the engine shutdown timer
  • Power take off (PTO) or auxiliary idle control system not active
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.