- Home
- / Questions
- / Mercury
- / Grand Marquis
- / Just bought a used 1999 Marquis - found original code but think it has been changed. How can we get...
Just bought a used 1999 Marquis - found original code but think it has been changed. How can we get it reset and how much does it cost?
6 Answers
tennisshoes answered about a year ago
If you are looking for the factory code it in usually in the trunk on the passenger side trunk hinge, then you will have to check your owners manual to put your own code into place but the factory ode cannot be changed and will override any code that has been put in.
GrandMarquis1999 answered about a year ago
Kelly & Tennisshoes - Thank you for responding. We are wondering the cost to have code reset. We found the original code card and the sticker in the trunk. We tried the number and the interior light and light on key pad came on but the code did not unlock the door.
tennisshoes answered about a year ago
The key pad will light if you touch any number, but the dome light came on that should have unlocked the drivers door, do the electric locks work with the inside lock button? Try this: make sure you have you keys in hand, then push the 7/8 and 9/0 at the same time, you should hear the locks click into the lock position, wait a minute then put in the code you have and see if it unlocks the drivers door then, listen for any noise like a lock motor click, if you hear a click sound then press the 1/2 then the 3/4 and finally the 5/6 , if I remember right that should unlock the passenger door then the rear doors and then unlatch the trunk. If you don't hear a click then something maybe haywire with the control box and a unfortunately a dealer will have to check the system out, and that is usually what they call straight time to repair, so if it takes the tech 2 hours to check it out then you get charged the shop rate for 2 hours, so at a 100 bucks an hour would cost you 200 bucks, it can get expensive really fast. You might try some of the independant shops some may have the abality to do it. I know out here none of the independents will even look at a keyless entry system. HTH
GrandMarquis1999 answered about a year ago
Tennisshoes - thank you that was very helpful. Followed your instructions. The 7/8 and 9/0 locks all the doors so we know that it works. The code still doesn't unlock any doors though, not even a sound. Think we may have to go to a dealer and what it will cost. Thanks for your help.
Dashly answered about a year ago
You know I got to tell I got to tell you people so awesome that you got website and get help for vehicles now a days thank God for the Internet good for a lot of things nice to see that people are willing to help other people for nothing just want to make a comment you know I got to tell I got to tell you people so awesome that you got website and get help for vehicles now a days thank God for the Internet good for a lot of things nice to see that people are willing to help other people for nothing just want to make a comment that's all man and say thank you to the people that help the other people that don't know
Your Answer
Related Questions
-
Just bought a used 1999 Marquis - found original code but think it has been changed. How can we get it reset and how much does it cost? 6 answers
Think the original code may have been changed. How can we get it reset? How much does it cost to have it reset and get a new number or reset factory number?
1999 Mercury Grand Marquis
-
General
-
My dad lost his key to his 99 Grand Marquis. If I get a blank cut, can I use the one key he still has and just use it twice and program the new key as a third key? Read somewhere how to program a new third key. 4 answers
Dad lost his keys and we still have my mom's key. One website says that if I have two keys, I can use them one at a time, turn on then off, and insert third key, turn on and off, and third key will ...
1999 Mercury Grand Marquis 4 Dr GS Sedan
-
General
-
I have a 1999 Marquis that run fine until it warms up about 3miles from the house and will not run again until after several minutes then you go a little more and it does this again any ideas ? 1 answer
engine dies only when at operating temperatures, fine cold, will not start until it sits a few minutes and repeats !
1999 Mercury Grand Marquis 4 Dr GS Sedan
-
General
-
just purchased a 2007mercury grande marquis how can i find the electronic door button combination 2 answers
where can I find number combination for electronic door opener?
2007 Mercury Grand Marquis LS Premium
-
General
-
How can I find the keyless door lock code for Grand Marquis 2009? 6 answers
Bought 2009 used Grand Marquis recently. No keyless door code available.
2009 Mercury Grand Marquis LS
-
General
Looking for a Used Grand Marquis in your area?
CarGurus has 1,755 nationwide Grand Marquis listings starting at $1,950.
Shortcuts
Search Mercury Grand Marquis Questions
Mercury Grand Marquis Experts
-
#1Tracy HooksReputation5,730
-
#2kbroReputation2,130
-
#3Js08016Reputation1,870
Related Models For Sale
Used Cars For Sale
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.