Question about 1997 Mercury Cougar XR7

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96 cougar was towed, not starting problems

Police towed my cougar ever since i got it back it doesn't run right.. it's like the anti theft device keeps locking me up.. i had to put the release button in the trunk for the gas part of it.. but don't know what else to do may start this time but not next 20 times...never had an issue until they towed my car.

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Try disconecting battery for 30min. to clear computer. If not from tow it sounds like failing fuel pump.

Posted on Jul 25, 2009

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Try disconnecting batt for 10 mins and reinstall to reset computer...GL

Posted on Jul 25, 2009

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99 mercury cougar anti theft light flashing no spark


if the security system is malfunctioning, it wont let the engine start as to avoid someone stealing it. have someone check the system or just deactivate the security cuz your car is useless unless it runs! security can take a back seat to the ability for it to move

Oct 20, 2012 | 1999 Mercury Cougar

1 Answer

I had a key made and it desabled the security system in my 1999 mercury cougar and now the car wont start and I need to have it reset.


All you have to do to reset the antitheft system is to lock the doors with the key fob.

Your new key has to be programmed to your engine computer (PCM) before it will work.

To program, follow the directions in your owner manual. You need 2 already rpogrammed keys to do this.

If you don't have 2 programmed keys, your dealer will have to use his diagnositc tool to retrieve the information from the computer. Always have 2 programmed keys. I actually keep 3 in case I lose one, I still have 2 to program a 3rd one myself.

If you have AAA, have it towed to the delaer as a "no Start" so you don't have to pay the tow charge.

I assume this new ket is your only key now, or you could drive to the dealer with your spare key.
-------------------------------------------------
SECTION 419-01B: Anti-Theft - Passive 1999 Cougar Workshop Manual GENERAL PROCEDURES Procedure revision date: 09/14/2001
Key Programming Using Two Programmed Keys NOTE: This procedure only works if two or more programmed ignition keys are available and it is desired to program additional key(s). If two keys are not available. For additional information, refer to Key Programming - Erase All Keys and Program Two Keys in this section.
NOTE: PID SPARE - KY must be enabled for this procedure to operate. If this PID is not enabled, refer to Security Access then select Spare Key Programming Switch; Enabled.
NOTE: If the programming procedure is successful, the new key(s) will start the vehicle and the anti-theft indicator will illuminate for approximately three seconds.
NOTE: If the programming procedure is not successful, the new key(s) will not start the vehicle and the anti-theft indicator will flash. If the programming procedure was not successful leave the ignition switch in the RUN position for at least 30 seconds, repeat the Key Programming procedure from Step 1. If the failure repeats, refer to Diagnostic and Testing to review DTCs an carry out Pinpoint Tests.
NOTE: A maximum of eight ignition keys can be programmed to a passive anti-theft system (PATS) equipped vehicle.
NOTE: If the steps are not carried out as outlined, the programming procedure will end.
NOTE: Ignition keys must have correct mechanical key cut for the vehicle and must be a PATS encoded key.
  1. Insert first programmed key into ignition lock cylinder and turn the ignition switch from the OFF position to the RUN position (maintain ignition switch in the RUN position for one second).
  1. Turn ignition switch to the OFF position and remove the first key from the ignition lock cylinder.
  1. Within five seconds of turning the ignition switch to the OFF position, insert the second programmed ignition key into the ignition lock cylinder and turn the ignition switch from the OFF position to the RUN position (maintain the ignition switch in the RUN position for one second).
  1. Turn the ignition switch to the OFF position and remove the second key from the ignition lock cylinder.
  1. Within ten seconds of turning the ignition switch to the OFF position , insert the unprogrammed ignition key (new key) into the ignition lock cylinder and turn the ignition switch from the OFF position to the RUN position (maintain the ignition switch in the RUN position for one second).
  1. If it desired to program additional key(s), repeat the applicable key programming procedure from step 1.
  2. ----------------------------------------------------------------------------------------------------------------------------------
Passive Anti - Theft System (PATS)
The Passive Anti-Theft System (PATS) is fully passive in operation and requires no special procedures by the driver to arm or disarm the system. It is invisible to normal scrutiny and is operated by a miniature transponder within the key body. The transponder communicates with the powertrain control module through a transceiver mounted around the ignition switch lock barrel. The PATS functionality is incorporated within the powertrain control module.
PATS may be identified by a larger than normal sized ignition key. A larger sized ignition key indicates the presence of the transponder that controls the system.
The transponder code reading is carried out when the key, having been inserted into the ignition lock barrel, is turned from position ``0'' to position ``II'' to crank the engine. If the PCM receives the correct code, the engine will start. If the PCM receives either no code or an incorrect code the engine will not crank and PATS remains armed and the engine immobilised.
Anti-Theft Indicator
Whenever the ignition is switched on the anti - theft indicator will remain on for three seconds while the system reads the ignition key code.
The anti - theft indicator will flash rapidly or glow continuously after the initial three seconds to indicate the PATS has immobilised the vehicle.
For additional information on the PATS fault codes, refer to the Diagnosis and Testing section
-------------------------------------------------------------------------
The PATS uses a specially encoded ignition key. Each encoded ignition key contains a permanently installed electronic device called a transponder. Each transponder contains a unique electronic identification code out of over four quadrillion combinations.
Each encoded ignition key must be programmed into the vehicle's powertrain control module (PCM) before it can be used to start the engine. There are special diagnostic repair procedures outlined in this manual that must be performed if an encoded ignition key needs to be replaced
------------------------------------------------------------------------

Dec 16, 2010 | 1999 Mercury Cougar

1 Answer

I am having the same issue with my anti-theft device in my 2003 Alero. Last year it stopped running and would not turn-over. $400 later, Brakemax said they just had to reset the anti-theft device. oK,...


the shop that told you they ripped it out only ripped you off unless they removed some aftermarket alarm system i,m a gm mechanic and if you remove the factory anti-theft on a 2003 olds alero it will not run ever again until re-installed make sure your battery is charged good turn igntion switch to run position but do not try to start security light should be flashing let car sit with switch on and light flashing for ten minutes light should stop flashing now start your car this is how to reset anti-theft was that worth $400.00 and again why let a bussiness named brakemax look at a no start condition keep on and you will be BROKE to the max HOPE THIS HELPS AND STAY AWAY FROM THEM YOUR FRIEND @ HELPMAX

Aug 30, 2010 | 2003 Oldsmobile Alero

1 Answer

1999 Mercury Cougar, Anti-theft light is flashing, car will not turn over, after I try to start it the anti-theft light stays on until I pull the key then it starts flashing. I've looked online for a new...


put key in trun to on do not start or try to start just trun on. wait 10 to 20 min.s with key on this should reset the theft system.after you wait turn key off then try to start.

Aug 26, 2010 | 1999 Mercury Cougar

2 Answers

Anti theft light comes on the car won't start


Your "inmobiliser" system is actived.

The anti-theft feature prevents the car from being started when one of several anti-theft devices is faulty are have otherwise been activated. The problem you descibe might be the ignition swith, which is known to wear out quickly on those models. The system can be completly disabled only when the car is running (meaning the teft deterent system is inactive after the Passlock II system detects the proper key in the ingition). A wire can be cut that would perminantly disable Passlock II, meaning any key that opens the door (or a screwdriver) could start the car. If the ignition swtich goes out or this wire is cut while the engine is off (theft deterent system is active) then the car will have to be towed back to the dealer to have the ignition system replaced and reprogrammed.

I have called Chevy and asked how to fix this problem. If you turn the key to the on position, right before it cranks when the lights and radio turn on. Leave it there for ten minutes until the anti theft light turns off. Then turn the key to the off position and then try starting the car.

Rumour has it that it is a yellow wire to be cut. Do more research, but D O N ' T cut it with the engine off. See first paragraph above.

Hope this help (remember rated and comment this). Good luck.

Mar 25, 2010 | 2003 Chevrolet Malibu

2 Answers

1999 mercury cougar. won't start...cranks...battery ok.


V6 ? 4CYL? Have you verified SPARK? Did anyone check the "fuel pump inertia switch?" Its in the right front kick panel. If it was a "Anti-theft Issue" the light would be on or flashing.

Nov 03, 2009 | 1999 Mercury Cougar

1 Answer

1999 Mercury Cougar Anti-theft System


ive reaently had a simular problem with the key being turned over and nothing happened, i had the starter replaced, seems like it was the cylinoid going bad.

Jan 06, 2009 | 1999 Mercury Cougar

3 Answers

How to reset my factory car alarm in a 1999 mercury cougar v4 2.0? thanks


1999 cougar. before they tell me I need a fuel pump I want to be SURE the anti theft system has not shut off the fuel to the engine.
how do I confirm that?

Dec 08, 2008 | 1999 Mercury Cougar

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