I want to reset or bypass the alarm system

Asked by Brian Nov 21, 2017 at 01:58 PM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

I have a mercy grand marquis ls we had to replace
the ignition switch and had to pop the lock from
outside to get in now the alarm system won't let it
start how can I bypass  or reset the alarm

2 Answers

159,765

You will have to have the ECU reprogrammed to recognize the new key. This will require a Ford dealership or a locksmith with the proper equipment. The PATS system can not be easily deactivated.

11 people found this helpful.

Your Answer:

Own this car?

Share your experience with others.

2000 Mercury Grand Marquis

Review another car

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,920
  • #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
13 Great Deals out of 516 listings starting at $2,999
Used Ford Crown Victoria
75 listings starting at $5,995
Used Ford F-150
6,402 Great Deals out of 173,383 listings starting at $1,800
Used Chevrolet Silverado 1500
4,095 Great Deals out of 117,332 listings starting at $1,599
Used Chevrolet Tahoe
1,227 Great Deals out of 24,749 listings starting at $1,123
Used Chevrolet Impala
189 Great Deals out of 3,377 listings starting at $899
Used Chevrolet Camaro
532 Great Deals out of 7,298 listings starting at $4,800
Used Buick LeSabre
118 listings starting at $2,497
Used GMC Sierra 1500
2,161 Great Deals out of 62,207 listings starting at $2,495
Used Ford Explorer
2,185 Great Deals out of 50,685 listings starting at $1,000
Used Toyota 4Runner
1,168 Great Deals out of 15,373 listings starting at $2,998
Used Toyota Tacoma
1,981 Great Deals out of 55,503 listings starting at $3,701

Used Cars For Sale

2009 Mercury Grand Marquis LS For Sale
9 listings starting at $6,500
2008 Mercury Grand Marquis LS For Sale
32 listings starting at $3,750

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.