How to reprogram key - 2005 Pontiac Grand Prix

Boxster key remotes are reprogrammed by put the key in the ignition turning the ignition on but not starting the car, then hold down the door lock on the remote for like 5 sec. Ta da... She's reprogrammed.

only a service dealer can reprogram the PCM to your keys or your keys to the PCM they need both units connected up to the code programmer to do this.

The problem is you need to use OE ( original equipment )
Honda made their cars so that you need to buy from them not a wrecker...The ignition feeds to the computer, So using a screw driver will make life worse...The ignition cylinder is similer to what"s in your front door...

Even with the reprogrammed key's the engine would crank, it might not start but it would crank over so that leave's only one thing, your used ignition switch is bad.

you need scan tool to reprogram new PCM and keys to PCM before vechicle will start the PCM dont recognize keys.if you used factory scan tool try reprogramm keys again.

May be keyfob needs reprogramming.

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 key fob 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 key fob remote select your remote and then try to operate the vehicle with remote.

These are just the basic procedure, but sometimes it will not help.

On that case dealer is the only option.

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There are few much related 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: -------

Theft indicator not letting car to start?

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

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2009 Toyota Highlander: Smart Key Not getting Detected?

http://whatisbyme.blogspot.in/2012/05/2009-toyota-highlander-smart-key-not.html

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2007 Toyota Prius: Reprogram Remote Keyfob?

http://whatisbyme.blogspot.in/2012/05/2007-toyota-prius-reprogram-remote.html

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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

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2006 Toyota Hilux: Programming New Key?

http://technoanswers.blogspot.in/2012/04/2006-toyota-hilux-programming-new-key.html

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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

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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

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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

-----------

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

------------

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

-------------

2000 Jeep Cherokee Limited: KeyFob Remote Not Working?

http://schematicsdiagram.blogspot.in/2012/06/2000-jeep-cherokee-limited-keyfob.html

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Chevrolet Malibu: Key Stuck in ON position?

http://technoanswers.blogspot.in/2012/04/chevrolet-malibukey-stuck-in-on.html

-----------

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.

Try with brand new key fob battery and see.If that helps.
Otherwise May be keyfob needs to be reprogrammed.

KEYFOB PROGRAMMING

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 key fob 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 key fob remote select your remote and then try to operate the vehicle with remote.

These are just the basic procedure, but sometimes it will not help.

On that case dealer is the only option.

---------

There are few much related 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

----------------

Oldsmobile Aurora Key Fob Reprogramming?

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

-------------

Buick Lesabre Key Fob Reprogramming?

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

---------------

Keyfob remote not working on 2003 Ford E350 Econoline?

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

-----------

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

------------

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

-------------

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

-------------

2012 Dodge Ram: Ignition Key will not release?

http://whoisbyme.blogspot.in/2012/07/2012-dodge-ram-ignition-key-will-not.html

--------------

These details will help.

Thanks.

The key fob battery, the theft module , must be causing the problem.The car not getting open with key, may be key needs reprogramming.-------- There is a battery in a key fob, many a times battery gets weak or dead, causing the problem.But if battery in key fob is already replaced, then theft alarm needs to be reprogrammed by the dealer.The theft system is not letting the car to start.----------- Both key fob and theft module needs to be reprogrammed by the dealer.Its done by a reprogramming scanner.Not a error code scanned, but a reprogramming tool scanner.----------- That will only pin point the problem,if the theft module is got faulty or just needs reprogramming.---------- This will help.Thanks.Helpmech.

If you key has a chip in it, you will probably have to get your ECM reprogrammed with the proper VIN, since it no longer matches the original VIN on your Vehicle. I don't think the dealer would program your keys to a mismatched VIN number, so more than likely you will need your ECM reprogrammed with the proper VIN. This will need to be taken to the Dodge Dealership to be fixed.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

the chip in the key is bad. you can try reprogramming it. If you reprogram it you have to reprogram all keys at the same time. Typically when it quits working the chip is bad unless there have been some other electrical problems.