2009 Mercury Mountaineer Service and Repair Manual
The 2009 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 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
All accessory stick-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory installed, this card will be placed in the glove box and should be handed to the vehicles owner during ini
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
2009-2017 VEHICLES EQUIPPED WITH A 6R80, 6R100, 6R140 AUTOMATIC TRANSMISSION HAVE AN UPDATED MAIN CONTROL VALVE BODY OVERHAUL PROCEDURE. REFER TO WORKSHOP MANUAL (WSM), SECTION 307-01 FOR MAIN CONTROL VALVE BODY (7A100) OVERHAUL PROCEDURES.
REPLACING THE ORIGINAL EQUIPMENT SYNC/NAVIGATION SYSTEM WITH EITHER AN AFTERMARKET SYNC/NAVIGATION KIT OR MODIFYING ORIGINAL SYNC/NAVIGATION PARTS TO PROVIDE ADDITIONAL FEATURES IS NOT RECOMMENDED NOR SUPPORTED ON ANY FORD, MERCURY OR LINCO
SOME 2008-2017 FORD/MERCURY/LINCOLN VEHICLES EQUIPPED WITH SYNC MAY GENERATE A VHR THAT IDENTIFIES A CONCERN WITH THE BRAKES AND SUSPENSION CATEGORY INDICATING SERVICE IS REQUIRED DUE TO A BRAKE SYSTEM WARNING LAMP BEING ILLUMINATED. IF THE
SOME 2008-2017 FORD/MERCURY/LINCOLN VEHICLES EQUIPPED WITH SYNC MAY GENERATE A VHR THAT IDENTIFIES A CONCERN WITH THE BRAKES AND SUSPENSION CATEGORY INDICATING SERVICE IS REQUIRED DUE TO A BRAKE SYSTEM WARNING LAMP BEING ILLUMINATED. IF THE
LINCOLN/MERCURY/FORD: THERE IS FLUID LEAKING AROUND THE TRANSMISSION BULKHEAD CONNECTOR SLEEVE, FROM THE TRANSMISSION. MODEL 2009-10 EXPEDITION, EXPLORER, EXPLORER SPORT TRAC, F-150, NAVIGATOR, MOUNTAINEER. *PE
FORD/MERCURY: TO PREVENT HARNESS DAMAGE, ON SOME VEHICLES, RESULTING IN CONTACT WITH TIRE OR SUSPENSION COMPONENTS, PROPER ROUTING OF WIRING HARNESS FOR WHEEL SPEED SENSOR IS KEY. 2006-2010 EXPLORER, MOUNTAINEER, EXPLORER SPORT TRAC. *PE
Showing the 8 most recent of 10 technical service bulletins on file with NHTSA.
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 difficult to turn. The contact stated that
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 difficult to turn. The contact stated that
MUFFLER. STILL HAS BAFFLES AND DAMPERS. CATALYTIC CONVERTER IS STILL ATTACHED. NOT LOUD OR OBNOXIOUS. DUE TO HAVING A 3IN IN DIAMETER TAIL PIPE. I WAS FAILED. I WAS APPROVED FOR THE LAST 8 YEARS AT DI
TL*THE CONTACT OWNS A 2009 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHEN THE KEY WAS INSERTED IN THE IGNITION SWITCH TO START THE VEHICLE, THE POWER SEAT FAILED TO MOVE FORWARD FROM THE EASY EXIT
HAVE A 2009 MERCURY MOUNTAINEER WITH 71,000 MILES. IN THE PAST 10 DAYS, HAVE HAD FOUR INCIDENTS WHERE, WHILE DRIVING, THE DRIVER'S SIDE POWER FRONT SEAT HAS SUDDENLY REVERTED TO THE EASY EXIT POSITI
Showing the 5 most serious of 8 complaints filed with NHTSA.
