I cannot get the Pats system on a 1999 Ford Taurus to reset to learn a new remote fob. What could be the problem.

Ok just the battery was replaced do you have a key fob remote control to stop the horn/alarm from sounding if no this is why your stuck in theft mode if you do have one make sure the battery in it is good and the contacts are tight against the battery disc inside it,next you must disconnect the battery cables and wait 3-5minutes then reconnect them when the alarm/horn sounds stop it with the remote and you'll be out of theft mode, if you just got a new fob it has to be programmed into the system by turning your key from off to on real fast until your door locks cycle this is about 8 times in 20 seconds then when the door locks cycle press any button on the remote control to cycle the locks again (lock/unlock)and now the fob is programmed into the system and the battery cable process must be repeated again if you have the manual it tells you the amount of key turns needed but just keep doing it you must be fast and the locks will cycle door code in comments

Hello Jennifer Jackson...

No... even LINCOLN windows are harder to break
(sorry... your LINCOLN is pretty secure).

Worse... the best price I've paid to get a double sided
PATS (passive anti-theft system) key cut = $6.

Bring your own key... But this was all about the price of PREVENTING your current situation... (oops).

If your ONLY key is truly "inside"...
Your goose is pretty much cooked... The cost of
the LOCKSMITH is pretty trivial compared to your
alternatives... Dealers will zing you MUCH BETTER
than your "expensive locksmith"...

But what ever you do... (my recommendation)... Since
you prefer not to be prepared... (no door code or FOB)
Don't pass on the opportunity to have that same SMITHY
at least tell you about your door code POSSIBILITIES
or at least program a remote FOB for you ...

A RESPONSIBLE "expensive locksmith" will
explain the WISDOM of NEVER having less than 2 (TWO) transponder keys. (by reading your owners manual you can program the FOBs yourself (FREE).

How do you manage the "no" keyless entry...?
I remain pretty sure the number pad... & KEY FOB
(wireless transmitter) were standard equipment...

2 SPARE keys minimum... ALWAYS.

SEALED Strattec Ford Mercury Lincoln PATS Transponder Chip Key UNCUT H72...

NEW FORD KEYLESS ENTRY CAR REMOTE FOB PAIR amp TWO UNCUT TRANSPONDER KEY...

1998 1999 2000 2001 2002 2003 Lincoln Town Car FOB Remote Transponder Car...

Carnac the Magnificent

absolutely...

(No starter action at all)... If the starter is engaging not the trouble)

Your key as a weeny teeny transponder in it... which could get damaged(washing machine, dropped or broken).

Try THAT all important second key...
If the second key fails to get any starter action you DO need to look into your PATS (Passive anti-theft system),

Hope this helps.

Amazon com 2 PAIR NEW Ford PATS Transponder Chip Key Blank USER...

Amazon com Crimestopper KEY OVERRIDE ALL Self Learning PATS Data Bypass...

Hey Jeff it's possible that the battery in the fob is breaking contact with the battery contacts inside try squeezing the remote tightly with one hand and press the buttons with the other if it starts working you found it you must carefully bend out the contacts to make it fit tight and from opening the fob you could have made the case loose so also try putting a small piece of foam inside to make a tighter fit is this a fob with the key in it or do you have a separate fob from the key for the pats system I'll look it up and see but your post back will help also anything that's near the receiver will throw the signal off but I think it's the battery looseness that's doing it

It has been years since had to replace pcm but you can go to Ford F150.net, instructions for program a new PATS key and follow the steps. Instructions cross over for other FORD vehicles as well.

SEE THE STEPS WITH CAREFULLY AND COMMON SENSE:God bless you
Press the unlock button on your vehicle's key fob to deactivate the alarm. If you've misplaced your remote for the car, use the PATS programmed key to unlock the driver's side door. Then, put the key in the ignition and turn the key to the "on" position. The vehicle's battery should be on, but the engine shouldn't be running.

2 Locate the override button on the alarm box, beneath the driver's side of the dashboard. Press the button and hold it in until the alarm beeps one time. The LED light for the alarm should stop blinking, indicating the anti-theft system is disabled.

3 To reset the vehicle's alarm, put the PATS programmed key in the ignition and turn the key to the "on" position. Press the override button. When the alarm resets, it chirps two times and the LED light begins blinking.

The 2 Key fob part, is to get a remote start that also has the RKE ( Remote Keyless Entry ) function. The the RMST / RKE system is installed, the RMST fob would be able to operate the door locks ( you can put the factory RKE fobs in the drawer )

the PATS ( Passive AntiTheft System ) part is to get a PATS bypass module for the remote start. The remote start that you purchase needs to be able to activate this prior to starting the truck ( usually pulse / signal outputs, most mfgr of RMST have these ).

There are a few PATS bypass modules, I have only used the Ford branded one ( which I think is also made by CodeAlarm, not 100% sure ).

If you go to any Ford dealer with a picture ID, and ownership proof (Title), they can cut a duplicate key for your car. A simple one, without a chip on it, will cost you as low as $10. With this key you can unlock the door and get in your car. But there is a small problem. Your car key might have a chip on it.
For the 1999 model year, all Ford Motor Company vehicles equipped with the passive anti theft system will be using the PATS II system. The PATS II system was introduced on roughly half of the PATS equipped vehicles for the 1998 model year. The other half of the PATS equipped vehicles for the 1998 model year were equipped with the PATS I system. Many 2000 and later Ford Vehicles Use the E-PATS system, which uses an encrypted transponder in the key.
The Ford dealer will explain you if you need a simple $10 key, or a chipped one $50 key. If your key has a chip, then you have to reprogram it. Normally the dealer will provide you a written instruction how to do it.

Passive Anti-Theft System (PATS) Module:

• located behind the integrated control panel.
• works in conjunction with PCM to enable or disable engine start function.
• failure of the PATS or communication to the module may result in a no start condition.
• if communication to the PATS module fails during diagnostics, refer to Section 13-11B .