2004 Grand Marquis key
10

Asked by Leonard Sep 29, 2018 at 02:16 PM about the 2004 Mercury Grand Marquis GS

Question type: Maintenance & Repair

Everything I have seen say that you need 2 working keys to program a new key. Can one of them be the valet key?

2 Answers
10

Leonard answered 6 years ago

http://www.programautokeys.com/classified/2004-mercury-grand-marquis-chip-key-transponder-programming-instructions-listing-8042.aspx

Mark helpful
10

Leonard answered 6 years ago

Can I program a third key myself if I have two working keys? Yes, once you have had the new key cut by a Locksmith use the following instructions. 1. Insert an existing working key into the ignition cylinder. 2. Turn the ignition cylinder to ON (RUN) and back to OFF. 3. Remove the existing working key and, within five seconds, insert a second working key and turn it to ON (RUN) then back OFF. 4. Remove second working key and insert the new key before ten seconds have elapsed and turn it to ON (RUN). Leave it on for one second and turn back to OFF. 5. The security light will light up for three seconds to indicate that the new key has been successfully programmed.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • 2004 Grand Marquis key 2 Answers

    Everything I have seen say that you need 2 working keys to program a new key. Can one of them be the valet key?

    2004 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • 2004 Grand Marquis problems 2 Answers

    It looks like I could have a number of multiple things wrong with this vehicle. I came to work this morning to a running 2004 Grand marquis that the new guy put a fuel pump into the day prior to t...

    2004 Mercury Grand Marquis

    -

    Maintenance & Repair

  • 2004 GRAND MARQUIS blower motor 1 Answer

    I have a 2004 grand marquis with automatic temperature control that erractically blows air, I have already changed the blower resistor and blower motor and problem still exists. I've read able c...

    2004 Mercury Grand Marquis

    -

    Maintenance & Repair

  • 2004 Mercury Grand Marquis 3 Answers

    The air blower will not trun off when the "OFF", button is pushed. Previously the blend door actuator, I was told is the problem. The car hvac was blowing hot air on ac mode. I was told to discon...

    2004 Mercury Grand Marquis

    -

    Maintenance & Repair

  • Grand Marquis 2004 wont start 8 Answers

    Hi. My mercury Marquis is making issues and it doesnt start. I am having this issue from last few weeks. Funny thing is that its start when it wants to. Initialy i thought that issue is with battery...

    2004 Mercury Grand Marquis GS

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 217 nationwide Grand Marquis listings starting at $1,800.

ZIP:

Own this car?

Share your experience with others.

2004 Mercury Grand Marquis

Write a car review

Review another car

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,930
  • #2
    Trippmeister
    Reputation
    5,180
  • #3
    Bob Beaman
    Reputation
    3,900
View All

Know more, shop wisely

Search

Related Models For Sale

Used Lincoln Town Car
7 Great Deals out of 351 listings starting at $2,999
Used Ford Crown Victoria
102 listings starting at $6,995
Used Ford F-150
6,545 Great Deals out of 167,224 listings starting at $1,500
Used Mercury Marauder
12 listings starting at $10,995
Used Toyota Camry
2,230 Great Deals out of 42,034 listings starting at $800
Used Buick LeSabre
147 listings
Used Honda Accord
1,346 Great Deals out of 25,785 listings starting at $1,900
Used Chevrolet Impala
210 Great Deals out of 3,522 listings starting at $995
Used Ford Mustang
971 Great Deals out of 22,258 listings starting at $2,600
Used Cadillac DeVille
4 Great Deals out of 203 listings starting at $4,988
Used Chevrolet Silverado 1500
4,495 Great Deals out of 116,365 listings starting at $995
Used Lexus LS
119 Great Deals out of 1,487 listings starting at $3,100
Used Toyota Corolla
1,679 Great Deals out of 27,840 listings starting at $1,900

Used Cars For Sale

2008 Mercury Grand Marquis GS For Sale
7 listings starting at $4,500
2007 Mercury Grand Marquis GS For Sale
3 Great Deals out of 8 listings starting at $3,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.