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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Ford
Satisfied Customers: 3659
Experience:  Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic Vehicles
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I need to know what to do to disable the factory alarm on my

Customer Question

I need to know what to do to disable the factory alarm on my 98 Ford f150?
JA: Have you checked the fuses? Is your battery fully charged?
Customer: Yes, I'm good there I believe. The truck will crank but I don't believe there is no spark.
JA: Are you fixing your F150 yourself? What have you tried so far?
Customer: Just trying to start it. It stopped wanting to start once I broke the valet switch. Either that or just bad timing. I was trying to put the truck in valet mode.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 10 months ago.
Category: Ford
Expert:  Chad Farhat replied 10 months ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 10 months ago.

hey how are you

unfortunately you can disable it, there is no fuse or relays to pull out , you have a Antitheft module & The PCM ( power terrain module ) truck computer

the module have to recognize the key and send a signal to PCM to allow start up , i know that is not what you want to hear , but with these newer trucks they make it impossible to bypass for security reason

you will need a factory scanner or equivalent to run a diagnostic scan & retrieve fault codes from the alarm module in the vehicle.
is it the module, the receiver, hood switch , door switch, wiring etc.. , it could be number of reasons , if you do that & retrieve fault codes i can help you further

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

The Remote Anti-Theft Personality Module is located behind left side of the instrument panel.

Expert:  Chad Farhat replied 10 months ago.

Please let me know if you need anything else on it, just reply back and we will continue

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Thank You
Chad Farhat
ASE Certified Technician