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 1720 (VEHICLE DYNAMIC SUSPENSION)
2009 Mercury Milan Premier, 3.0 1, AWD
Section 1720 (Vehicle Dynamic Suspension)
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Section 1720 (Vehicle Dynamic Suspension)
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnostic Tests
- Vehicle Dynamic Suspension
- Notes
- Principles of Operation
- Inspection and Verification
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: DTC B1317/B1318 - Battery Voltage High/Low
- Pinpoint Test B: DTC C1724 - Air Suspension Height Sensor Power Circuit Failure
- Pinpoint Test C: DTC C1726 - Air Suspension Rear Pneumatic Failure
- Pinpoint Test D: DTC C1885 - Air Suspension RR Height Sensor Circuit Failure
- Pinpoint Test E: DTC C1770 - Air Suspension Vent Solenoid Output Circuit Failure
- Pinpoint Test F: DTCs C1790/C1795 - LR/RR Air Suspension Air Spring Solenoid Output Circuit Failure
- Pinpoint Test G: DTC C1840 - The Scan Tool Indicates Self-Test Failure When Attempting to Carry Out the Self-Test
- Pinpoint Test H: The Air Compressor is Inoperative
- Pinpoint Test I: The Air Compressor Runs Continuously with the Ignition Switch in the OFF Position and No DTCs Are Set
- Component Test
- Vehicle Dynamic Suspension
- General Procedures
- Removal And Installation
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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.