I have misplaced the key fob. I have checked the car but have not located it. How far away does the key fob work from the car?

NO CAR TOLD AT ALL, MAKER, MODEL , YEAR.
SO ALL ANSWERS WILL BE WRONG, GENERIC OR WILD GUESSING.

1: CAR CAME WITH 2 FOB'S BUT all BAD NOW? OR LOST 1?
YOU SAID Remotely BUT HOW FAR FROM CAR IS REMOTELY 2FEET?
ALL Inside car door lock switches all work?
ok key part works and engine runs and drives perfectly
all fuses in the car are good as in ALL FUSES>
the fob batteries must not be put in upside down
my cars for sure 5years up the fob buttons are just bad.
my 2010 car , on 3rd set now, for worn out buttons
i dismantle bad fobs fully and the gold contact area of the switch looks like a
shotGun blast or eat up by acid.
totally normal on fobs. used every day endless. (body sweat etc)
buy new fobs and get them programmed in , is the cure.
YOU SAID SPARE FOB, IS THIS THE DAY1 NEW CAR WORKING GOOD THEN FOB FAILING NOW?

listed checks
FUSES ALL GOOD
SCAN THE PCM FOR ERROR FOR SURE AFTER A FOB FAIL TEST.
GET NEW FOBS. AND PROGRAM THEM TO THIS CAR , SECRET.

limited info generic answer check and test battery -- most likely the key fob itself is failing you can have some one test fob or get another fob[s] and have programmed

Locate your second key fob -
Try using that key fob -

if it does not work, and you can verify the Batteries in both Fob's are good - it could be a couple different things.

1. your security system control box may be 'bad'.
2. their is a 'ring' around the key area that are notorious for going bad and preventing the car from starting - however...they don't prevent the key fob from remotely opening the door locks.
3. The power feeding the security system is interrupted (blown fuse, etc) -

I would do the following:

1. Check the second fob and see if it works - If it does you have a bad #1 key fob (or battery).
2. Check ALL of the fuses (in the dashboard Drivers side access panel) AND under hood - Check even those not labeled security - as there are often fuses that feed more than one item, but are only labeled for one item.
3. Try going inside the car, shut all the doors, and lock/unlock the car five or six times using the interior control - I believe this is supposed to reset the unit.
I could be wrong - you can look this up. It might be that you have to do this with the key fob but I can't recall.

Give those things a shot. Also, make 100% sure all of the doors, hood, trunk, etc are fully closed.

I'd just about bet you have a bad key fob - finding #2 is the key here.

Beyond that - it's probably a trip to the junkyard for a new security module and matching set of key fobs - But long before getting involved in that - I'd bet you have a bad key fob or blown fuse -

Security Modules and key fob's are not universally replaceable, are extremely difficult to work with (for those without VIDA [Volvo Diagnostic software] and programming capabilities) and have to be programmed to work with the control unit to which assigned.

If this only happens when the key fob is close enough for the car to "hear" the signals transmitted from it then chances are the fob is failing. The FOB will have to be taken apart, cleaned and inspected for contamination/corrosion/stress cracks.
If the car does this on it's own even when the FOB has no battery or is too far away to be heard, then the problem could be internal on the TWICE (Theft Warning Module) or a power lock switch.
Since you said the horn beeps I would say it is most likely a FOB inadvertently transmitting signals even when you're not pushing buttons. Repair or replace the fob and you should be okay.

try the other fob.
the buttons on fobs can short.(its just a plastic membrane with carbon pad in the fob and can go bad.(cracks or crumbles inside...........)
so put the suspected fob far away from car, and use the good new fob. work now, and a new FOB battery, too.
if you only have one fob, now's the time to get the spare.
no fob lasts forever. not not ever.

lost both FOBS?
be happy, mine i must keep 3 working.... or cant make my own.
rule 1, never have 1 fob. or get stranded, , you will.....
so does other fob work?

1: check all fuses. both boxes
2: use only the key fob, no other keys on ring, for the test.
3: use the 2nd fob same way , now. with other key far away.
4: make sure battery voltage is 12.6vdc, 10.7v the IMMO goes belly up. (any $10 voltmeter , works)

5: have only 1 fob (transponder-key) near the ignition.
6: do not have other keys near Ignition switch. even just plain keys.
watch out, some after market keys are transponsers but look plain.
I have one for my car. button less fob. very trim, but is transponder key.
7: for sure not other transonder keys from other "cars or anything"

The Lamp means, your transponder key is dead. or scrambled.
buy a new battery for fob. the operator guide tells you what to do.
lost that?
on mine i put in a fresh coin cell and bam, it works.

on newer jeeps, if the IMMO thinks your are hacking the system.
it bricks the IMMO for 24hours, sucks huh?
for example, using a key from another car , in some odd way.
or doing same and battery is weak or remove from under hood.
it thinks its being attacked,, and goes stupid for 24hrs.
i dont think yours has this, , but mine does.

Keyfob remote reprogramming is not very difficult but on some cases it can be done by dealer service tools.If the remote s faulty then keyfob will not get programmed.Insert the key in ignition.Turn the key to on position,and cycle the key three times off-on-off-on-off-on.Then with the keyfob remote select your remote and then try to operate the vehicle with remote.These is just the basic procedure,but sometimes it will not help.
On that case dealer is the only option.
---------There are few very relted troubleshooting links mentioned below for remote key fob reprogramming.I suggest you to go through the list and click the link below to go through its details and procedure:-------
2009 Toyota Highlander: Smart Key Not getting Detected? http://whatisbyme.blogspot.in/2012/05/2009-toyota-highlander-smart-key-not.html
----------2007 Toyota Prius: Reprogram Remote Keyfob? http://whatisbyme.blogspot.in/2012/05/2007-toyota-prius-reprogram-remote.html
----------- Pin that holds the flick key part to the key fob? http://whoisbyme.blogspot.in/2012/07/pin-that-holds-flick-key-part-to-key-fob.html
-------------
2006 Toyota Hilux: Programming New Key? http://technoanswers.blogspot.in/2012/04/2006-toyota-hilux-programming-new-key.html
----------Where is Key chip memory located on 2004 ford Freestar? http://technoanswers.blogspot.com/2012/01/where-is-key-chip-memory-located-on.html
----------Ford Keyless Remote Fob Reprogramming?

http://schematicsdiagram.blogspot.com/2011/12/ford-keyless-remote-fob-reprogramming.html
----------After getting car washed, check engine light is ON and key less entry not working, tried reprogramming. Also car shows fuel pressure? http://schematicsdiagram.blogspot.com/2011/12/after-getting-car-washedcheck-engine.html
-----------Audi A8 Key Fob Programming?

http://technoanswers.blogspot.com/2011/12/audi-a8-key-fob-programming.html

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Oldsmobile Aurora Key Fob Reprogramming?

http://technoanswers.blogspot.com/2011/12/olds-aurora-key-fob-reprogramming.html

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Buick Lesabre Key Fob Reprogramming?

http://technoanswers.blogspot.com/2011/12/buick-lesabre-key-fob-reprogramming.html

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Keyfob remote not working on 2003 Ford E350 Econoline?

http://technoanswers.blogspot.in/2012/01/keyfob-remote-not-working-on-2003-ford.html

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KeyFob will open the doors but not start on BMW?

http://technoanswers.blogspot.in/2012/02/key-will-open-doors-but-not-start-on.html

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Mitsubishi Car Key Not getting detected after replacing ECM http://repairhelpcenter.blogspot.com/2012/11/mitsubishi-car-key-not-getting-detected.html
----------- Key Fob will not lock and unlock doors?

http://technoanswers.blogspot.in/2012/02/key-fob-will-not-lock-and-unlock-doors.html

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2000 Jeep Cherokee Limited: KeyFob Remote Not Working? http://schematicsdiagram.blogspot.in/2012/06/2000-jeep-cherokee-limited-keyfob.html
----------- Chevrolet Malibu: Key Stuck in ON position? http://technoanswers.blogspot.in/2012/04/chevrolet-malibukey-stuck-in-on.html
----------- Theft indicator not letting car to start?

http://technoanswers.blogspot.in/2012/02/theft-indicator-not-letting-car-to.html

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2012 Dodge Ram: Ignition Key will not release? http://whoisbyme.blogspot.in/2012/07/2012-dodge-ram-ignition-key-will-not.html
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These details will help.Thanks.

Replace battery !!!

Ford can cut a key with the vin#. As far as the fob, dealerships don't carry them any longer. If you can find one on eBay the dealership can reprogram it but most are too lazy and won't bother. Google "replacement key fobs", there are a few companies that sell
Replacements and can program them for you. Pep boys and auto zone also carry replacements but I'm not sure about the programing. Good luck.

Re-synchronize the FOB if the problem is with just one key.

1. Hold down both buttons simultaneously until the fob LED goes out. (10 seconds)

2. Release both buttons -- the LED should come on and stay on.

3. Press the larger fob button for a second, and the LED should flash.

IF re-synchronization doesn't work, you may have to replace the fob. Call customer service with your PIN (on the key-card that came with the keys). IF you don't have the PIN, then you need to call customeor service to confirm/register your ownership of the car.

If the keys are re-synchronized and it still doesn't work:

Re-program.

1. Re-synchronize as above, if you have not done so.

2. Turn the ignition on 3 times within 7 seconds. The red light above the odometer should light and stay on for 3 seconds.

3. Enter the PIN. Immediately after the red light goes out as per 2 above, switch on the ignition and count the number of flashes until it equals the number of the first digit on your PIN, then turn the ignition off, then on again. Do this for all four numbers.

4. What a pain, but if you get it wrong on a count, then you can restart by turning the ignition off for 10 seconds.

5. After the fourth digit, if the PIN is correct, the red light will stay on. Then you can re-test the fobs, and it should work.

Otherwise, call customer service.

Hope this helps.