2005 Mercury Grand Marquis Service and Repair Manual
The 2005 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
- GSL Sedan 4-Door
- LS Sedan 4-Door
- Limited Edition Sedan 4-Door
- Ultimate Edition Sedan 4-Door
Engines covered
- 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
Ford Motor Company (Ford) is recalling certain model year 2003-2005 Ford Crown Victoria and Mercury Grand Marquis vehicles manufactured October 3, 2001, to August 2, 2005. The affected vehicles have
A loss of headlights can reduce driver visibility and increase the risk of a crash.
Ford will notify owners, and dealers will replace the LCM, free of charge. The recall began April 1
ON CERTAIN PASSENGER VEHICLES, THE BATTERY CABLE INCLUDES A FUSIBLE LINK THAT MAY CONTACT AND SUBSEQUENTLY CHAFE ON A #2 CROSS MEMBER ATTACHING BOLT.
THIS CONDITION MAY RESULT IN HEAT DAMAGE AND COULD LEAD TO A FIRE.
DEALERS WILL INSPECT THE FUSIBLE LINK AND POSITION IT AWAY FROM THE CROSS MEMBER BOLT. IF THE FUSIB
Inpected or repaired under 13R01 - Requests for recall service action under 13S08
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
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
FORD: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION REGARDING THE LIGHTING CONTROL MODULE EXTENDED WARRANTY COVERAGE, FOR SOME VEHICLES, TO 15 YEARS OR 250,000 MILES, WHICHEVER OCCURS FIRST. MODEL 2003-2005 VICTORIA, GRAND MARQUI
FORD: THE LIGHTING CONTROL MODULE HAS EXTENDED WARRANTY COVERAGE, ON CERTAIN VEHICLES, DUE TO A POSSIBLE CRACK ON SOLDER JOINT THAT CONNECTS RELAY TO CIRCUIT BOARD. MODEL 2003-2005 CROWN VICTORIA, GRAND MARQUIS. *PE
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
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
FORD/MERCURY/LINCOLN: VEHICLES MAY EXHIBIT ONE OR MORE OF THE FOLLOWING SYMPTOMS: DRIVE AWAY HESITATION, LOSS OF RPM ON DECELERATION, DIFFICULTY STARTING, AND/OR IDLE RPM LESS THAN DESIRED. THE F53 MOTORHOME CHASSIS IS INCLUDED. *PE
Showing the 8 most recent of 29 technical service bulletins on file with NHTSA.
UPON STARTING UP 2005 MERCURY MARQUIS (~24000 MILES) AND PLACING CAR INTO DRIVE, CAR ACCELERATED AT A HIGH RATE OF SPEED AND CRASHED INTO A GAS STATION PUMP. THE CAR ACCELERATOR MALFUNCTIONED AND WAS
UPON STARTING UP 2005 MERCURY MARQUIS (~24000 MILES) AND PLACING CAR INTO DRIVE, CAR ACCELERATED AT A HIGH RATE OF SPEED AND CRASHED INTO A GAS STATION PUMP. THE CAR ACCELERATOR MALFUNCTIONED AND WAS
ARRIVED AT SON'S HOME AND STOPPED IN DRIVEWAY WITH FOOT ON BRAKE WHEN VEHICLE SUDDENLY ACCELERATED UNCONTROLLABLY, SPINNING WHEELS IN GRAVEL DRIVEWAY. DRIVER SWERVED TO AVOID HITTING GARAGE AND RAN H
MY DAUGHTER AND I WERE REAR ENDED AND OUR 2005 MERCURY GRAND MARQUIS GS AIRBAGS NEVER DEPLOYED IN SPITE OF BEING HIT THREE TIMES BY A DELIVERY DRIVER WITH A BOX TRUCK AT THE INTERSECTION OF PEMBROKE A
WHILE PARKED AT THE END OF HER DRIVEWAY, WAITING FOR ONCOMING VEHICLES TO BYPASS, THE VEHICLE AUTOMATICALLY ACCELERATED, AND MADE A HALF TURN AT 40 MILES PER HOUR. THE VEHICLE, AS A RESULT, HIT A TREE
Showing the 5 most serious of 634 complaints filed with NHTSA.
