The 2008 Mercury Grand Marquis 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
- GS Sedan 4-Door
- LS Sedan 4-Door
Engines covered
- 4.6L 281Cu. In. V8 FLEX 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
Ford is recalling certain model year 2005-2011 Ford Crown Victoria (including Crown Victoria Police Interceptors), Mercury Grand Marquis, and Lincoln Town Car vehicles. The affected vehicles are curre
If the lower bearing separates, the vehicle may experience a loss of steering, increasing the risk o
Ford will notify owners and dealers will replace the lower intermediate shaft, free of charge. The
Inpected or repaired under 13R01 - Requests for recall service action under 13S08
4R75E Transmission - Grinding/Whine/Vibration/Gear Slippage - Serrvice Kit available
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
4R75E TRANSMISSION - GRINDING/WHINE/VIBRATION/GEAR SLIPPAGE - SERVICE KIT AVAILABLE ISSUE A service kit has been released to assist with proper repair of the 4R75E transmission in 2008 Mark LT, 2008-2010 F-150, 2008-2010 / 2013-2014 E-Serie
FORD/LINCOLN/MERCURY: FAILURE OF PLANETARY GEAR ASSEMBLY IS DUE TO TRANSMISSION, ON CERTAIN VEHICLES, EXHIBITING GRINDING, GEAR SLIPPAGE, WHINE TYPE NOISE, VIBRATION, WHILE DRIVING OR LOSS OF REVERSE. *PE
FORD/LINCOLN/MERCURY: THE INDICATOR MAY ILLUMINATE OVERDRIVE OFF AND/OR SLIPPING IN 3RD OR NO 4TH GEAR, DUE TO DIRECT CLUTCH FAILURE AND DIAGNOSTIC TROUBLE CODE (DTC) P0733 AND/OR P0734. MODEL 2008-2013 MARK LT, F-150, CROWN VICTORIA, GRAND
FORD: THE LOWER INTERMEDIATE STEERING SHAFT, HAS CORROSION OF SWING LINK JOINTS, COMBINED WITH COLLAPSED UPPER INTERMEDIATE STEERING SHAFT, RESULTING IN STEERING COLUMN SEPARATION AND LOSS OF STEERING CONTROL. MODEL 2005-2011 CROWN VICTORIA
Showing the 8 most recent of 13 technical service bulletins on file with NHTSA.
TL*THE CONTACT OWNS A 2008 MERCURY GRAND MARQUIS. AFTER DRIVING IN REVERSE AND SHIFTING INTO DRIVE FROM A STOP LIGHT THE VEHICLE SURGED FORWARD AND CRASHED INTO ANOTHER VEHICLE. A POLICE REPORT WAS NO
TL* THE CONTACT OWNS A 2008 MERCURY GRAND MARQUIS. THE CONTACT STATED HE STARTED THE VEHICLE AND WHEN DEPRESSING THE BRAKES, THE VEHICLE ABNORMALLY ACCELERATED. THE CONTACT WAS UNABLE TO STOP THE UNI
I HAVE A 2008 MECURY GRAND MARQUIS ,I WAS IN A WRECK IN DECEMBER 10,2017 FRONTAL IMPACT MY AIR BAGS DID NOT GO OFF OR WORK DURING MY WRECK ALSO MY SEAT BELTS DID NOT WORK AS WELL. I GOT HURT IN THE WR
I HAVE A 2008 MECURY GRAND MARQUIS ,I WAS IN A WRECK IN DECEMBER 10,2017 FRONTAL IMPACT MY AIR BAGS DID NOT GO OFF OR WORK DURING MY WRECK ALSO MY SEAT BELTS DID NOT WORK AS WELL. I GOT HURT IN THE WR
I HAVE A 2008 MECURY GRAND MARQUIS ,I WAS IN A WRECK IN DECEMBER 10,2017 FRONTAL IMPACT MY AIR BAGS DID NOT GO OFF OR WORK DURING MY WRECK ALSO MY SEAT BELTS DID NOT WORK AS WELL. I GOT HURT IN THE WR
Showing the 5 most serious of 101 complaints filed with NHTSA.
