2003 Mercury Mountaineer Service and Repair Manual

This factory service and repair manual for the 2003 Mercury Mountaineer covers a Base-trim four-door sport utility built with either a flex-fuel 4.0L SOHC V6 of 245 cubic inches or a gasoline 4.6L SOHC V8 of 281 cubic inches, both naturally aspirated and both overhead-cam. Two camshaft-driven engines in one platform mean two timing procedures, two sets of torque values and two diagnostic paths, all set out here ahead of the suspension, brake, restraint and body wiring sections.

Engines covered

• 4.0L V6 (245 cu in) — SOHC, naturally aspirated, flex-fuel
• 4.6L V8 (281 cu in) — SOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sport utility

Trims covered

• Base

Known issues on the 2003 Mountaineer. One recall is on the record, and it concerns replacement side and rear glass that may not break into the small fragments tempered glass is meant to produce, raising the risk of injury from shards in a crash. Complaints run to 152, weighted toward structure at 48 and the power train at 34, with air bags at 8. Glass and body panel service, transmission and driveline diagnostics and restraint system testing are each documented here with removal sequences, torque values and the wiring diagrams the electrical checks depend on.