2009 Mercury Mountaineer - Maintenance & Specs

The 2009 Mercury Mountaineer belongs to a Mercury Mountaineer lineup that Know Your Ride tracks across 6 model years, from 2000 to 2010. Engine options on record include the 4.0L, 4.6L, 4.0L V6 / 4.6L V8. It is configured as rear-wheel drive with an automatic 5-spd. The 2009 sits mid-run, with both earlier (2000) and later (2010) Mountaineer model years also documented.

It takes 5W-30 full synthetic oil, 4.5 qt with a new filter meeting API SP. Fluid specs on file include Motorcraft Orange coolant, DOT 3 brake fluid. Know Your Ride lists 13 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 20 ft-lb, lug nut 80 ft-lb, spark plug 18 ft-lb.

NHTSA complaints for this vehicle cluster around electrical system,seats (1), seats (1), steering (1). A representative report reads: "The contact owns a 2009 Mercury Mountaineer. The contact stated while making a left or right turn, she heard an abnormal noise, and the steering wheel became..."

EPA fuel economy is rated at 14 city / 20 highway MPG, 16 MPG combined. Estimated annual fuel cost is about $2,750.

Quick Specs

Common Trouble Codes

• P0300 - Random/Multiple Cylinder Misfire Detected
• P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
• P0171 - System too Lean (Bank 1)
• P0128 - Insufficient Coolant Temperature for Stable Operation
• P0442 - Evaporative Emission Control System Leak Detected (small leak)
• P0455 - Evaporative Emission Control System Leak Detected (gross leak)
• P0700 - Transmission Control System Malfunction
• P0301 - Cylinder 1 Misfire Detected
• U0100 - Lost Communication With ECM/PCM A

Related Vehicles

Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.