Theft system

Asked by DeonT Dec 23, 2016 at 08:47 AM about the 1998 Ford F-150 Lariat LB

Question type: Maintenance & Repair

My ignition switch broke. It was stuck in
the ON position for a while completely
draining the battery. I changed the ignition
switch on my truck and put in a new
battery. Afterwards I attempted to start the
truck but I noticed the theft light flashing.  
Ignoring it I tried to crank it up and it won't
turn over.  What do I do to get my truck
back on the road?

2 Answers
188,625

Paul answered 7 years ago

The car is not seeing or recognizing the new ignition switch and key and will need to re-flashed at the dealer.

Mark helpful
34,895

lrodri911 answered 7 years ago

The key has to be programmed to match the computer or computer re flashed to match new key, u can't just replace it like the older vehicles

Mark helpful

Your Answer:

Related Questions

  • Theft system 2 Answers

    My ignition switch broke. It was stuck in the ON position for a while completely draining the battery. I changed the ignition switch on my truck and put in a new battery. Afterwards I attempted to...

    1998 Ford F-150 Lariat LB

    -

    Maintenance & Repair

  • Anti theft system need to disable 1 Answer

    Took battery off 2002 Ford F-150 to clean it and once back on the anti theft system won’t shut off so we can no longer start truck. What can we do to reset computer? We only have one key and none...

    2002 Ford F-150 Lariat SuperCab Stepside 4WD SB

    -

    Maintenance & Repair

  • Theft system 2 Answers

    How do I turn the theft light off so I can start my car again

    2000 Ford Explorer XLT AWD

    -

    Maintenance & Repair

  • Anti theft system (PATS) 3 Answers

    I have a 2004 ford Taurus.The theft system light is blinking rapidly on the dash.I tried getting the computer reset as well as my key reprogrammed. Still no crank,what else could I do?

    2004 Ford Taurus

    -

    Maintenance & Repair

  • anti theft Pats system 3 Answers

    Replace lock cylinder in a 98 Expedition now my Pats system is set off theft light will not quit flashing tried to reprogram key need help

    1998 Ford Expedition 4 Dr XLT 4WD SUV

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

1998 Ford F-150

Write a car review

Review another car

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    41,990
  • #2
    Gene Arnett
    Reputation
    16,010
  • #3
    Rowefast
    Reputation
    15,540
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,302 Great Deals out of 127,351 listings starting at $2,700
Used GMC Sierra 1500
2,055 Great Deals out of 68,582 listings starting at $3,795
Used Ford F-250 Super Duty
1,305 Great Deals out of 43,666 listings starting at $2,999
Used Toyota Tacoma
2,147 Great Deals out of 36,778 listings starting at $3,500
Used Dodge RAM 1500
92 Great Deals out of 1,545 listings starting at $1,999
Used Ford F-250
204 listings starting at $7,995
Used Ford Ranger
664 Great Deals out of 13,954 listings starting at $2,993
Used Ford Mustang
987 Great Deals out of 21,449 listings starting at $1,800
Used Chevrolet Silverado 2500HD
1,072 Great Deals out of 30,671 listings starting at $499
Used Jeep Wrangler
3,103 Great Deals out of 61,292 listings starting at $3,000
Used Ford F-350 Super Duty
888 Great Deals out of 22,922 listings starting at $3,495

Used Cars for Sale

2024 Ford F-150 For Sale
13 Great Deals out of 63,258 listings starting at $28,086
2023 Ford F-150 For Sale
834 Great Deals out of 18,269 listings starting at $28,000
2022 Ford F-150 For Sale
603 Great Deals out of 6,625 listings starting at $23,594
2021 Ford F-150 For Sale
900 Great Deals out of 9,532 listings starting at $10,950
2020 Ford F-150 For Sale
569 Great Deals out of 5,668 listings starting at $11,985

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.