I have 1999 Mercury Grand Marquis, there is a problem with the security system, had to get a key reprogrammed twice, and the second time it did not work, is there a way around the security system, car is on last legs not looking for major repair

Asked by Jul 07, 2016 at 11:29 AM about the 1999 Mercury Grand Marquis 4 Dr GS Sedan

Question type: Maintenance & Repair

Security system has a problem, the car won't acknowledge the key we
have, so we had a locksmith reprogram the key, that worked for about 2
days. Then the problem happened again, we called a locksmith again he
said there was a problem with the system and that a ford specialist should
look at it. The car is on its last legs, I just want to keep the car running until
I can afford new car, is there a way to bypass the security system in a way
that we wont keep running into this problem

3 Answers

14,795

Ford EECIV computer system no by-pass. Confirm with the locksmith that he did NOT just "clone" a key which is just a RFID copy of the key you had, and that he did ENTER a NEW key CODE in the EECIV computer, which is the correct method, a cloned key should NOT cost more than $60

1 people found this helpful.

Okay, I will have to give them a call once I get out of work to see if he did enter a new code rather than clone the key, if he did enter a new key code, and this problem did reoccur, could the driver side door not locking properly or being open from the inside cause the car to go into a security safety mode?

I have a 2001 mercury grand marquis that suddenly stop turning on. The computer code showed that it was a anti-Theft issue. The electro mechanic I took it to was a repoff and want to charge $85.00 to diagnostic it after he performed a computer reprograming of $500.00 a month ago. I heared that it could be a fuse problem... please advise!

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,207 nationwide Grand Marquis listings starting at $1,200.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    6,000
  • #2
    kbro
    Reputation
    2,210
  • #3
    Js08016
    Reputation
    2,050
View All

Related Models For Sale

Used Lincoln Town Car
26 Great Deals out of 1,375 listings starting at $1,295
Used Ford Crown Victoria
5 Great Deals out of 718 listings starting at $1,700
Used Chevrolet Impala
390 Great Deals out of 25,730 listings starting at $900
Used Ford F-150
2,290 Great Deals out of 215,590 listings starting at $1,300
Used Chevrolet Tahoe
540 Great Deals out of 36,765 listings starting at $1,600
Used Ford Mustang
248 Great Deals out of 36,950 listings starting at $2,500
Used Ford Taurus
175 Great Deals out of 15,866 listings starting at $981
Used Cadillac DeVille
1,270 listings starting at $1,988
Used Chevrolet Silverado 1500
1,780 Great Deals out of 149,909 listings starting at $828
Used Toyota Camry
765 Great Deals out of 71,882 listings starting at $1,200
Used Lincoln Continental
27 Great Deals out of 2,835 listings starting at $21,995

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
13 listings starting at $5,888
2010 Mercury Grand Marquis For Sale
5 Great Deals out of 79 listings starting at $3,500
2009 Mercury Grand Marquis For Sale
59 listings starting at $3,777
2008 Mercury Grand Marquis For Sale
4 Great Deals out of 93 listings starting at $1,800
2007 Mercury Grand Marquis For Sale
6 Great Deals out of 110 listings starting at $1,200

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.