Re-program Keys - 2002 Dodge Caravan

To program new keys to work with the Passive Anti-Theft System (PATS) on a 1997 Ford Expedition, you will need to have two working programmed keys available. If you do not have any working keys, you will need to have the PATS module reprogrammed by a Ford dealership or a locksmith that specializes in Ford vehicles.
Once you have two working keys, here are the steps to program new keys to the PATS system:

1. Insert the first working key into the ignition and turn it to the "On" position (do not start the engine).
2. Within 5 seconds, insert the second working key and turn it to the "On" position.
3. Within 10 seconds of inserting the second key, turn both keys to the "Off" position.
4. Remove both keys from the ignition.
5. Insert the new key you want to program into the ignition and turn it to the "On" position.
6. Within 10 seconds, turn the key to the "Off" position and remove it from the ignition.
7. Repeat steps 5 and 6 for any additional new keys you want to program.

The PATS system should now recognize the new key and it should be able to start the engine. If the new key does not work, please consult with an Ford Dealer or Automotive Locksmith to assist you with the programming.

Beginning in 1998, selected Chrysler products began rolling off the assembly lines with a new advanced security system known as the Sentry Key Immobilizer System (SKIS). Most WJ Grand Cherokees are equipped with this feature. When you attempt to start a vehicle with this feature, the onboard computer sends out a RF signal that is read up by the electronic transponder chip embedded in the key. The transponder then returns a unique signal back to the vehicle's computer, giving it the ok for the vehicle to start and continue to run. This all happens in under a second, and is completely transparent to the vehicle driver. For additional security, two pre-programmed keys are needed in order to register additional keys into the system. In the event of the loss of all keys, special programming equipment is needed to register new keys into the system.
It is highly recommended that you get a spare third key made and programmed for your Jeep. It's a good idea to do this while you still have your two original keys. If you were to ever lose one of those keys, it's a lot more costlier to have a replacement made as you must go to the dealer or a specialty locksmith to have the programming done. With your own pair of original keys, you can easily program a new key yourself.
The Sentry Key Immobilizer Module (SKIM) can be programmed to recognize up to a total of eight Sentry Keys. There are two possible methods to program the SKIM to recognize a new or additional valid key, the Customer Learn Method and the dealer-performed Secured Access Method. The Customer Learn programming feature is available only on U.S. vehicles and is detailed below. Note that once a Sentry Key has been programmed as a valid key to a given vehicle, it cannot be programmed as a valid key for use on any other vehicle.

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Best Manuals

Ignition what ? Switch ,Ignition lock cylinder ? New keys ? do they have the transponder pellet in the head. Do you have a security lit flashing when trying to start the vehicle ?
SECTION 419-01: Anti-Theft - PATS 1999 Mustang Workshop Manual GENERAL PROCEDURES Procedure revision date: 11/06/1998 Key Programming -Erase All Key Codes and Program Two Keys
Special Tool(s) > New Generation STAR (NGS) Tester or equivalent
418-F048 (007-00500) NOTE: This procedure is used when a customer needs keys programmed into the system and does not have two programmed ignition keys available. This procedure is also useful when programmed ignition key(s) have been lost or the ignition switch assembly has been replaced, and it is desired to erase key(s) from the passive anti-theft system (PATS) memory.
NOTE: This procedure will erase all programmed ignition keys from the vehicle memory and the vehicle will not start until two keys have been reprogrammed to the vehicle.
NOTE: Two PATS encoded keys with the correct mechanical cut must be available to perform this procedure. One or both of them may be the customer's original keys.
NOTE: If additional keys are to be programmed, refer to Key Programming - Program a Key Using Two Programmed Keys. If the remaining keys are with the customer and are not available with the vehicle, then instruct the customer to refer to the Owners Guide under the "Programming Spare [SecuriLock ® (North America), Safeguard ® (U.K.) or PATS for all other markets] Keys Procedure" for instructions on programming the remaining keys.

1. Turn the ignition switch from OFF to RUN.

1. Enter New Generation STAR/Service Bay Diagnostic System (NGS/SBDS). Follow the SECURITY ACCESS PROCEDURE to obtain security access.

1. From NGS/SBDS menu, select IGNITION KEY CODE ERASE.

1. NOTE: Do NOT select any additional commands from this menu.
   Turn the ignition switch to OFF and disconnect NGS.

1. Insert the first encoded key into the ignition lock cylinder and turn the switch to RUN for three seconds.

1. Insert the second encoded key into the ignition lock cylinder and turn the switch to RUN for three seconds.

1. The vehicle should now start with both ignition keys.

You'll need to take to the dealer

You can also have a locksmith make keys for you...but with zero keys, you may have to get the first one from the dealer, and be prepared to provide proof of ownership...

Programming
When
System malfunction. Key added or replaced.
How
NOTE: Two programmed keys necessary. Complete each step within 15 seconds. NOTE: Some models - replacement key can only be programmed using diagnostic equipment.
Obtain all keys to be programmed. Using first programmed key, proceed as follows: Switch ignition ON and OFF within 15 seconds. Using second programmed key, proceed as follows: Switch ignition ON and OFF within 15 seconds. Within 10 seconds: Immobilizer LED flashes. Programming mode activated (acoustic signal will be heard). Proceed as follows: Within 50 seconds: Insert first key to be programmed into ignition switch. Switch ignition ON and OFF. Within 10 seconds: Single acoustic signal will be heard and immobilizer LED stops flashing and illuminates for 3 seconds to indicate correct programming. Repeat complete procedure to program remaining keys. Keys can also be programmed using diagnostic equipment.

two options
1.) two the vehicle to a dealer
2.) find a mobile technician that can program keys

remember...some of the BEAT garages cannot program keys unless they PAY for the correct software for their scanners

for example, my "cheap" $5000 scanner cannot program keys

Synchronization
When
Key buttons operated repeatedly while vehicle out of range and system becomes inoperative.
How
Polo: Press key unlock button for approximately 1 second. Golf/Bora: Press key lock or unlock button for approximately 1 second. Manually lock or unlock vehicle. System should now lock or unlock vehicle. If not, carry out programming procedure.
Programming
When
Key added or replaced. System malfunction.
How - Polo
Keys can only be programmed using diagnostic equipment.
NOTE: A maximum of 4 keys can be programmed.
How - Golf/Bora
98MY
Keys can only be programmed using diagnostic equipment.
NOTE: A maximum of 4 keys can be programmed.
How - Golf/Bora 99MY


Switch ignition ON. Insert key to be programmed into driver's door lock. Lock vehicle manually. Press lock or unlock button. Wait at least 1 second. Press lock or unlock button again. Vehicle horn sounds to indicate correct programming. Keys can also be programmed using diagnostic equipment.
NOTE: A maximum of 4 keys can be programmed.

Programming
When
Key(s) added or replaced. System malfunction.
How
Obtain all keys fitted with remote control. Fasten seat belts and close all doors. Turn ignition switch from position I to position II 4 times within 6 seconds. Switch ignition OFF. Programming mode activated for 10 seconds proceed as follows: Press and hold lock, unlock or boot release button Fig. 1 [1], [2] or [3]. Wait for acoustic signal (indicates correct programming). Repeat above procedure within 10 seconds to program remaining keys. To exit programming mode: Turn ignition switch to position III or wait 10 seconds. Keys can also be programmed using diagnostic equipment.
NOTE: A maximum of 4 keys can be programmed.

you will have to get a dealer to cut new keys to code that dealers have access to and then get them to program to car but also erase old keys so vehicle wont start with old keys
or next more expensive option is new keys, ignition barrel and door barrels replaced which are differently same coded key and locks as well as programming and erasing old keys.