2010 Mercury Mariner Service and Repair Manual

This factory service and repair manual for the 2010 Mercury Mariner has one body style, three trims and three engines, and the fuel note on the last of them matters: the 3.0L DOHC V6 of 181 cubic inches is naturally aspirated and certified for flex-fuel or gasoline, while the 2.5L DOHC inline-four of 152 cubic inches appears both as a full hybrid and on its own. Base, Hybrid and Premier fill out the four-door sport utility range covered here, each with its own equipment and wiring.

Engines covered

• 2.5L inline-four full hybrid (152 cu in) — DOHC, naturally aspirated, gasoline
• 2.5L inline-four (152 cu in) — DOHC, naturally aspirated, gasoline
• 3.0L V6 (181 cu in) — DOHC, naturally aspirated, flex-fuel or gasoline

Body styles covered

• 4-door sport utility

Trims covered

• Base
• Hybrid
• Premier

Known issues on the 2010 Mariner. Three recalls are on record. On V6 vehicles the fuel delivery module can crack and leak fuel, which near an ignition source is a fire risk. A steering torque sensor that misreads driver input can cause the loss of electric power steering assist, and replacement front wheel bearings of incorrect dimensions can affect braking and steering. The 279 complaints divide fairly evenly across steering at 63, the power train at 60 and speed control at 50; fuel delivery, steering assist and transmission control are each covered here with specifications, wiring diagrams and diagnostic procedures.