2005 Mercury Mariner Service and Repair Manual

This factory service and repair manual for the 2005 Mercury Mariner covers a four-door sport utility offered in Base and Premier trim, with two naturally aspirated gasoline engines to sort between: a 2.3L DOHC inline-four of 140 cubic inches and a 3.0L DOHC V6 of 181 cubic inches. Which one is under the hood changes the tune-up specifications, the accessory drive layout and the diagnostic path, so the engine sections are read first and the rest of the book, from the driveline through the brakes and body wiring, follows for either build.

Engines covered

• 2.3L inline-four (140 cu in) — DOHC, naturally aspirated, gasoline
• 3.0L V6 (181 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sport utility

Trims covered

• Base
• Premier

Known issues on the 2005 Mariner. Three recalls sit on the federal record for this year. One covers replacement front wheel bearings made to the wrong dimensions, which can degrade braking and steering. Another involves a rebuilt transmission whose shift lever can come away from the linkage, leaving the driver unable to select a gear while the indicator shows a position the transmission is not in. The third concerns interior trim at the left A-pillar that transmits too much force to an occupant's head in a crash. Owners logged 67 complaints, led by the power train at 12, the electrical system at 8 and engine cooling at 7, all systems this manual diagnoses.