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 1368 (STEERING SYSTEM - GENERAL INFORMATION)DIAGNOSTIC TESTSSTEERING SYSTEMSYMPTOM CHART - STEERING SYSTEM

2009 Mercury Milan Premier, 3.0 1, AWD

Symptom Chart - Steering System

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Symptom Chart - Steering System

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

Condition	Possible Sources	Action
No communication with the vehicle dynamics module (VDM) (vehicles equipped with variable assist power steering [VAPS])	Wiring, terminals or connectors VDM	Go to MODULE COMMUNICATIONS NETWORK article to diagnose the no communication problem.
Steering has lack of assist or inconsistent assist	DTCs present in VDM (vehicles equipped with variable assist power steering [VAPS])	RETRIEVE and RECORD all VAPS DTCs. REFER to the VEHICLE DYNAMICS MODULE (VDM) DTC INDEX (EARLY BUILD VEHICLES EXCEPT POLICE INTERCEPTOR & LONG WHEELBASE VEHICLES) .
	Contaminated power steering fluid	CHECK the power steering fluid for contamination. FLUSH the power steering system as necessary. REFER to Power Steering System Flushing .
	Steering gear Power steering pump Restricted power steering lines/hoses	Go to Pinpoint Test B .
Excessive steering wheel play	Steering gear Steering column Steering column shaft/coupling Steering linkage Ball joints Strut bearing plate	Go to Pinpoint Test C .
Steering system drift/pull/wander	Unevenly loaded vehicle	CORRECT the vehicle loading as necessary.
	Tire pressure Wheel alignment Steering gear Steering column shaft/coupling Frame alignment	Go to Pinpoint Test D .
Poor returnability/sticky steering	Binding steering column shaft/coupling U-joints	INSTALL a new steering column shaft. REFER to STEERING COLUMN article.
	Loose, worn or damaged steering linkage	Go to Steering Linkage under Component Tests .
	Binding suspension components	INSPECT the suspension components. REFER to SUSPENSION SYSTEM - GENERAL INFORMATION article for the suspension diagnosis and testing.
	Binding steering column bearing(s)	INSTALL a new steering column. REFER to STEERING COLUMN article.
	Binding dash boot seal	INSTALL a new dash boot seal. REFER to STEERING COLUMN article.

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.