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
189,525

Paul answered 8 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
35,405

lrodri911 answered 8 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 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

  • Locked anti-theft system 1 Answer

    Was having a key made to replace lost keyand the anti-theft system locked up - how to unlock system?

    2012 Ford Fusion SEL

    -

    Maintenance & Repair

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    42,600
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,890
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
196 Great Deals out of 5,897 listings starting at $2,975
Used GMC Sierra 1500
129 Great Deals out of 6,505 listings starting at $3,975
Used Ford F-250 Super Duty
18 Great Deals out of 1,176 listings starting at $8,995
Used Toyota Tacoma
47 Great Deals out of 1,068 listings starting at $9,998
Used Ford F-250
4 listings
Used Dodge RAM 1500
5 Great Deals out of 68 listings starting at $3,000
Used Ford Mustang
62 Great Deals out of 1,356 listings starting at $4,995
Used Ford Ranger
27 Great Deals out of 1,594 listings starting at $5,400
Used Chevrolet Silverado 2500HD
28 Great Deals out of 1,246 listings starting at $9,500
Used Ford Explorer
71 Great Deals out of 2,072 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.