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 MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1657 (CRUISE CONTROL SYSTEM)DIAGNOSIS AND TESTINGCRUISE CONTROLSYMPTOM CHART

2009 Mercury Milan Premier, 3.0 1, AWD

Symptom Chart

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Symptom Chart

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
The cruise control is inoperative	Wiring, terminals or connectors PCM not configured for cruise control Stoplamp switch Clutch Pedal Position (CPP) switch (manual transaxle) Cruise control switch Digital Transmission Range (TR) sensor (automatic transaxle) Vehicle speed signal PCM ABS module Park brake	GO to PINPOINT TEST A .
The cruise control does not disengage when the clutch is applied	Wiring, terminals or connectors Clutch pedal cruise control deactivator switch PCM	GO to PINPOINT TEST D .
The cruise control indicator lamp is always on	Wiring, terminals or connectors Instrument Cluster (IC) PCM	REFER to PINPOINT TEST AA: THE CRUISE CONTROL INDICATOR IS NEVER/ALWAYS ON .
The cruise control switches do not operate correctly	Wiring, terminals or connectors Cruise control switches Clockspring PCM	GO to PINPOINT TEST C .
The cruise control cannot set speed above 80 mph (130 km/h)	MyKey™ is in use and MyKey™ Max Speed Limiter is turned on	VERIFY if a MyKey™ is in use. REFER to MYKEY(TM) FEATURE . With an admin key, VERIFY if MyKey™ Max Speed Limiter is turned on. REFER to MyKey&trade in Owner's Literature. If necessary, VERIFY cruise control normal operation with an admin key.

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.