2004 Mercury Mountaineer Service and Repair Manual

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Factory-Grade Data

The 2004 Mercury Mountaineer Service and Repair Manual is a practical, workshop-ready reference for maintenance, diagnostics, and repairs. Use it to troubleshoot symptoms, follow step-by-step procedures, verify specifications, and confirm wiring and connector locations before replacing parts.

Ideal for technicians and DIY owners, it supports everything from routine service to deeper mechanical and electrical work—including drivability, no-start, warning lights, overheating, brake and suspension issues, HVAC faults, and circuit testing.

Trims covered

  • Base Sport Utility 4-Door
  • Premier Sport Utility 4-Door

Engines covered

  • 4.0L 245Cu. In. V6 FLEX SOHC Naturally Aspirated
  • 4.0L 245Cu. In. V6 GAS SOHC Naturally Aspirated
  • 4.6L 281Cu. In. V8 GAS SOHC Naturally Aspirated

What’s inside

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

Why this manual matters

  • Faster diagnostics with system-based troubleshooting and wiring diagrams
  • Clear procedures and reference sections to reduce guesswork and rework
  • Helpful for maintenance planning and verifying parts/specs before repairs

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Vehicle Safety Data

2004 Mercury Mountaineer Recalls & Complaints

NHTSA #07E10400011/12/2007Component: VISIBILITY:GLASS, SIDE/REAR

CERTAIN CURVED TEMPERED REPLACEMENT GLASS MANUFACTURED BY HANGZHOU SAFETY GLASS LTD AND SUPPLIED TO SAFELITE BY AUTO TEMP INC., IDENTIFIED AS DOT-430, AND SOLD FOR USE ON CERTAIN DOMESTIC AND FOREIGN

Consequence

IN THE EVENT OF A VEHICLE CRASH, THE OCCUPANT(S) MAY BE SERIOUSLY INJURED BY SHATTERED GLASS.

Remedy

SAFELITE WILL NOTIFY ITS RETAIL CUSTOMERS AND REPLACE THE GLASS FREE OF CHARGE. RETAIL CUSTOMERS CAN

TSB #10156863

Some 2000 and newer Ford, Lincoln and Mercury vehicles equipped with aluminum body panels may exhibit corrosion concerns appearing as bubbled and/or peeling paint with or without accompanying white dust. Panel replacement is recommended. Fo

TSB #10155551

Some 2000 and newer Ford, Lincoln and Mercury vehicles equipped with aluminum body panels may exhibit corrosion concerns appearing as bubbled and/or peeling paint with or without accompanying white dust. Panel replacement is recommended. Fo

TSB #10109070

The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a limited refresh rate

TSB #10045340

FORD/LINCOLN/MERCURY: IF BATTERY WAS DISCONNECTED OR DEAD, VEHICLES/TRUCKS MAY EXPERIENCE HARD STARTS AND ENGINE IDLE RPM FLUCTUATION AND EXHIBIT DIAGNOSTIC TROUBLE CODES (DTCS) P0505, P0506, P2111 AND P2112. *PE

TSB #10028736

FORD: SOME VEHICLES MAY EXHIBIT OIL SEPARATION FROM THE INTERNAL LUBE FOUND IN THE UNITIZED CARTRIDGE SEAL. OIL SEPARATION APPEARS TO BE AND IS OFTEN MISDIAGNOSED, AS AN AXLE LUBE LEAK. *PE

TSB #10023943

SOME 1997-2008 VEHICLES EQUIPPED WITH A 4.6L 2V, 5.4L 2V, OR 6.8L 2V ENGINE--SPARK PLUG THREAD REPAIR PROCEDURE--NOT COVERED UNDER NEW VEHICLE LIMITED WARRANTY. *NJ THIS INCLUDES F-53 MOTORHOME CHASSIS. UPDATED 2/23/10. *PE

TSB #10021052

MIL ON WITH DTC P0463 OR ERRATIC FUEL GAUGE OPERATION. *KB

TSB #10021038

MIL ON WITH P0463 OR ERRATIC FUEL GAUGE OPERATION. *KB

Showing the 8 most recent of 103 technical service bulletins on file with NHTSA.

20100714Component: VEHICLE SPEED CONTROLCrash reported2 injured

I DROVE A 2004 MERCURY MOUNTAINEER SUV AND AS I WAS TURNING INTO THE APARTMENT COMPLEX FROM A COMPLETE STOP, THE GAS PEDAL CLAMPED DOWN & I COULDN'T GET THE BRAKE TO WORK. MY SUV WAS TOTALED & I RAN

20161212Component: AIR BAGSCrash reported1 injured

MY SON WAS DRIVING TO WORK ON AUGUST 6, 2015. SOMETHING HAPPENED, AND HE RAN OFF THE ROAD AND HIT A TREE. AT THAT POINT THE AIRBAG COVER FLEW TOTALLY OFF, INSTEAD AND FALLING DOWN AS IT IS SUPPOSED

20110627Component: POWER TRAIN:AUTOMATIC TRANSMISSIONCrash reported1 injured

TL* THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS PARKED, WITH THE REAR LIFT GATE OPENED, WHEN IT BEGAN TO ROLL BACKWARDS. WHILE ATTEMPTING TO ENTER THE MOVING V

20090309Component: POWER TRAIN:AUTOMATIC TRANSMISSIONCrash reported1 injured

TL*THE CONTACT OWNS A 2004 MERCURY MOUNTAINEER. WHILE THE VEHICLE WAS TURNED OFF, THE CONTACT'S TWO YEAR OLD SON GRABBED THE KEY AND PLACED IT IN THE IGNITION. HE ATTEMPTED TO START THE VEHICLE, BUT

20060531Component: VEHICLE SPEED CONTROLCrash reported1 injured

VEHICLE SPEED CONTROL: WHILE PREPARING TO BACK UP, BEFORE SHIFTING, VEHICLE JUMPED, AND THEN SUDDENLY ACCELERATED FORWARD, BRAKES WERE APPLIED BUT VEHICLE WOULDN'T STOP AND ENGINE WAS ROARING AS IF T

Showing the 5 most serious of 271 complaints filed with NHTSA.

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