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 MANUALSFORD2012E 450 V10-6.8LREPAIR AND DIAGNOSISCRUISE CONTROLDESCRIPTION AND OPERATION
2012 Ford E 450 V10-6.8L
Cruise Control: Description and Operation
2012 Ford E 450 V10-6.8LSECTION Description and Operation
Cruise Control
The cruise control system consists of the following components:
- Stoplamp switch
- Cruise control deactivator switch (integral to the stoplamp switch)
- PCM
- Cruise control switches
- High mounted stoplamp
- BOO resistor (cutaway vehicles)
The cruise control system is controlled by the PCM. The cruise control system is designed to maintain a selected vehicle speed between 40 km/h (25 mph) and the maximum limited vehicle speed. The cruise control system is controlled by the steering wheel mounted switches (ON, OFF, SET/ACCEL, COAST, RESUME), stoplamp switch and cruise control deactivator switch. The steering wheel mounted switches are hardwired to the PCM.
During normal driving, the vehicle speed may vary slightly from the set speed due to road conditions. The vehicle speed can fluctuate when driving up and down a steep hill. If the vehicle speed decreases more than 16 km/h (10 mph) below set speed, the cruise control disengages.
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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.