2008 Mercury Mountaineer Service and Repair Manual
The 2008 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
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH THE 4.6L ENGINE AND 6R TRANSMISSION, THE BOLT SECURING THE TRANSMISSION OIL COOLER LINE FITTINGS AT THE TRANSMISSION MAY NOT HAVE BEEN SUFFICIENTLY TORQ
IF LEAKING TRANSMISSION FLUID CONTACTS THE CATALYTIC CONVERTER, IT MAY POSE A RISK OF FIRE.
DEALERS WILL INSPECT AND HAVE THE TRANSMISSION COOLER LINE ATTACHMENT BOLT TIGHTENED FREE OF CHARGE.
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
IN THE EVENT OF A VEHICLE CRASH, THE OCCUPANT(S) MAY BE SERIOUSLY INJURED BY SHATTERED GLASS.
SAFELITE WILL NOTIFY ITS RETAIL CUSTOMERS AND REPLACE THE GLASS FREE OF CHARGE. RETAIL CUSTOMERS CAN
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
When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all versions of MERCON SP and can be used going forward. Mixing MERCON LV and MERCON SP in the same transmission is acceptable. After 30-J
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
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
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
FORD: SEE SEARCH BUTTON FOR OWNER LETTER. ON SOME VEHICLES, THE INSTRUMENT CLUSTER INDICATOR LIGHT ILLUMINATES SERVICE ENGINE SOON DUE TO LEAKAGE IN EVAPORATIVE EMISSIONS (EVAP) SYSTEM, IF EASY FUEL CAPLESS FUEL FILL PIPE FLAP IS BENT ON PI
Showing the 8 most recent of 14 technical service bulletins on file with NHTSA.
TL* THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. WHILE IN PARK AND TURNED OFF, THE VEHICLE ROLLED FORWARD AND COLLIDED WITH ANOTHER VEHICLE. THERE WERE NO WARNING INDICATORS ILLUMINATED OR INJURIES. A
WHILE DRIVING ON A LONG TRIP, WITHOUT WARNING, THE MEMORY SEATS CHANGE SEAT SETTING AND WENT BACK FULLY AS IF I SHUT THE VEHICLE OFF, THIS HAPPENED SEVERAL TIMES WHILE I WAS DRIVING WITHOUT MY ASSISTA
WHILE DRIVING ON A LONG TRIP, WITHOUT WARNING, THE MEMORY SEATS CHANGE SEAT SETTING AND WENT BACK FULLY AS IF I SHUT THE VEHICLE OFF, THIS HAPPENED SEVERAL TIMES WHILE I WAS DRIVING WITHOUT MY ASSISTA
TL*THE CONTACT OWNS A 2008 MERCURY MOUNTAINEER. WHEN THE CONTACT STARTED THE IGNITION, THE DOME LIGHT ILLUMINATED UNEXPECTEDLY. THE FAILURE OCCURRED INTERMITTENTLY AND THE DOME LIGHT WOULD NOT DIM A
The contact owns a 2008 Mercury Mountaineer. The contact stated that the check engine warning light was illuminated. The contact stated the vehicle stalled while driving at an undisclosed speed. The c
Showing the 5 most serious of 156 complaints filed with NHTSA.
