2009 Mercury Grand Marquis Service and Repair Manual

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Factory-Grade Data

The 2009 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

  • 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

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Vehicle Safety Data

2009 Mercury Grand Marquis Recalls & Complaints

NHTSA #13V38500029/08/2013Component: STEERING

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

Consequence

If the lower bearing separates, the vehicle may experience a loss of steering, increasing the risk o

Remedy

Ford will notify owners and dealers will replace the lower intermediate shaft, free of charge. The

TSB #11029052

Ford and Lincoln vehicles equipped with wired keyless entry keypad systems and accessory wireless keyless entry keypad systems may or may not come with a wallet card containing the master code. Unlike the integrated wired keypad, the access

TSB #10254138

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

TSB #10204997

4R75E Transmission - Grinding/Whine/Vibration/Gear Slippage - Serrvice Kit available

TSB #10205037

Inpected or repaired under 13R01 - Requests for recall service action under 13S08

TSB #10183773

For 2005-2012 Crown Victoria, 2005-2011 Grand Marquis and Town Car vehicles, Regional Program 13R01 applies to vehicles not registered in corrosion states and not included in Safety Recall 13S08, where operation in high corrosion areas for

TSB #10166447

This SKU is a Radiator Fan. The customer communication requested return of unsold inventory to inspect the electrical connections. An electrical connection issue may lead to the fan not working potentially throwing a check engine light for

TSB #10140323

The Accessory (Wireless) Keyless Entry Keypad can only be used with vehicles that are factory built with Remote Keyless Entry (RKE). The master code for the Accessory (Wireless) Keyless Entry Keypad can be retrieved from FMCDealer - Parts a

TSB #10138524

The Accessory (Wireless) Keyless Entry Keypad can only be used with vehicles that are factory built with Remote Keyless Entry (RKE). The master code for the Accessory (Wireless) Keyless Entry Keypad can be retrieved from FMCDealer - Parts a

Showing the 8 most recent of 16 technical service bulletins on file with NHTSA.

20230124Component: SERVICE BRAKESCrash reported

An SUV crashed into an apple store in Hingham Mass. The driver told police his foot became stuck to the gas pedal. More likely his foot became hooked under the brake pedal as he tried to quickly shift

20100308Component: AIR BAGSCrash reported

TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. HE STATED THAT HE HIT A DEER IN DECEMBER OF 2009 AND THE AIR BAGS DID NOT DEPLOY. HE DROVE THE VEHICLE TO THE DEALER AND THE DEALER SAID THEY WOULD O

20091103Component: VEHICLE SPEED CONTROLCrash reported

TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. HE APPLIED PRESSURE TO THE BRAKE PEDAL WHEN ATTEMPTING TO PARK THE VEHICLE, BUT IT LURCHED FORWARD. THE VEHICLE CRASHED THROUGH THE GARAGE WALLS I

20171102Component: ELECTRICAL SYSTEMFire reported1 injured

ON OCTOBER 21, 2016, WHILE I WAS DRIVING ON I-30 IN DALLAS COUNTY, A FIRE OCCURRED IN THE DAIMAY-SUPPLIED DRIVER-SIDE VISOR LAMP ASSEMBLY OF MY 2009 FORD MERCURY GRAND MARQUIS. THE FORD FUSE SYSTEM FA

20240819Component: STEERING

About a month ago I contacted Beechmont Ford (600 Ohio Pike Cincinnati, Ohio 45245) in reference to Manufacturer Recall Number # 13S08 NHTSA Recall Number # 13V385000. I've wrote them three time and

Showing the 5 most serious of 35 complaints filed with NHTSA.

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