Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2018F-450 SUPER DUTY LARIAT, 4D PICKUP CREW CAB, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - DIAGNOSTIC METHODS (DIESEL)DRIVE CYCLESSELECTIVE CATALYTIC REDUCTION (SCR) SYSTEM PROCEDURENOTES
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WD
Selective Catalytic Reduction (SCR) System Procedure: Notes
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WDSECTION Notes
Selective Catalytic Reduction (SCR) System Procedure - Transit
NOTE:
If refilling the tank with diesel exhaust fluid does not clear the EXHAUST FLUID RANGE or EXHAUST FLUID EMPTY messages, the SCR System Refill Activation Reset can be carried out using the scan tool.
RENDER: 1.0x
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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.