Need to recode keyless entry unit

Viper Keyless Entry Systems

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Viper is the industry leader in keyless entry systems. Add the convenience of keylessentry to virtually any vehicle - even vehicles without power door locks!

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does your unlock button work in car? If it does, do you have another keyless entry key fob? If so does it work? If you just replaced the battery you can try removing battery and cleaning contacts within remote. I know some of the nissan altimas had the same issue and the only solution was a new key fob. Good Luck

Hi.

To program ( or reprogram ) a keyless entry remote transmitter into the remote keyless entry module, perform the following steps:

1. Turn the key to ON or ACC and short the two terminals of the program connector, a two-pin connector located below the driver's side of the instrument panel at the base of the steering column. All doors should lock and then unlock.
2. Press any button on each keyless entry remote transmitter in turn. All doors should lock and then unlock. If the door locks do not respond, press the button again (up to three times maximum with the same keyless entry remote transmitter). If the door locks still fail to respond, go to Pinpoint Test A.
3. Repeat Step 2 to program additional keyless entry remote transmitters into the remote keyless entry module (up to four keyless entry remote transmitters maximum).
4. Turn key off.
5. Remove the short from the program connector. All doors should lock and then unlock.
6. Verify that the keyless entry remote transmitters have been successfully programmed by pressing the LOCK or UNLOCK button on each one, and observing that the system responds by locking and/or unlocking the doors.


I hope this helps you.

Thanks!

Programming Electronic Door Lock Control System NOTE: The electronic door lock control processor (14B001) erases all previous keyless entry remote transmitter (15K601) from memory when the keyless entry remote transmitters are programmed or reprogrammed. The electronic door lock control processor can store up to four keyless entry remote transmitters in memory.

• To program (or reprogram) keyless entry remote transmitter into the electronic door lock control processor, perform the following steps:

1. Turn ignition switch to the RUN position and momentarily short the two terminals of the program connector taped to the wire assembly and located behind the glove compartment. All doors should lock and then unlock. Remove shorting pin.
   

1. Press any button on keyless entry remote transmitter. All doors should lock and then unlock to verify the keyless entry remote transmitter has been programmed. If door locks do not respond, press button again (up to three times maximum with the same keyless entry remote transmitter).
   

1. Repeat the above step to program additional keyless entry remote transmitters into the electronic door lock control processor (up to four keyless entry remote transmitters maximum).
   

1. Turn ignition switch OFF. All doors should lock and then unlock.
   

1. Check operation.
   

To program the transmitters, perform the following procedure while seated in the vehicle driver's seat:

Close all the vehicle doors.
Remove the ignition key from the ignition lock cylinder.
Press and hold unlock on the door lock switch.
Important: To successfully enter the keyless entry programming/diagnostic mode, steps 4 through 6 must be completed within 25 seconds of pressing the door unlock switch.

While holding the door lock switch in the unlock position, insert and remove the ignition key twice. Do not rotate the ignition lock cylinder.
Insert the ignition key a third time leaving the key in the ignition lock cylinder. The ignition must remain in the LOCK position for the rest of the procedure.
Release the door lock switch. The chime will sound three chimes to signal that transmitter programming/diagnostic mode is active.
Press and hold the lock and unlock buttons at the same time on the keyless entry transmitter for approximately 4 seconds. The chime will sound two times to signal that the transmitter has been programmed successfully.
To exit the transmitter programming/diagnostic mode perform either of the following:
• Turn the ignition switch to the RUN position.

• Remove the ignition key from the ignition switch

Key fobs have to be reprogrammed. something has knocked the coding off. Search the web for procedures to program fobs. It usually entails operating ignition a series of power lock sequences and the like. If that does not work you can take it to the dealer and they can recode it using the data from you cars computer, but that is extremely expensive.

The keyless entry is designed to work with the doors closed (closed - not locked). If the door ajar sensor thinks the door is open the keyless entry is disabled. When you manually lock the door it might tighten the door just enough to activate the keyless entry. I would try slamming all the doors closed and then see if the keyless entry works. If it still wont work have the wiring checked on the front door lock.

if its early 05 round heart shaped remote it needs programming into system at dealer with Tech2
later 05 to 07 had square (rectangle) shaped remote
1.2 ID Code Additional Registration
Note: This procedure will add additional remotes to the Keyless Entry Control Units memory. A total of 4 remote transmitters may be programmed into the Keyless Entry Control Units memory. When a total of registered and newly registered remotes exceed 4, the oldest one shall be erased.
Step Action
1 Note: Make sure that all the doors are closed and unlocked. Insert the ignition key into the ignition switch.
Open the driver's side door.
2 Turn the Ignition key to the “ON” position and then to the “LOCK” position three times
(The key should remain in the “LOCK” position)
Note: This step must be carried out within five seconds.
3 “CLOSE” and “OPEN” the driver’s doors once (Leaving the driver’s door in the “OPEN” position)
Note: This step must be carried out within five seconds after step 2 is completed.
4 Wait for 8 seconds (This wait time is critical)
5 Turn the Ignition key “ON” and then to the “LOCK” position once and turn key to the “ON” position (The key should remain in the “ON” position)
OR on/lock once
Note: This step must be carried out eight seconds after step 3 is completed.
6 “CLOSE” the driver’s door
The HAZARD lights should flash 3 times (This acknowledges the Keyless Entry Control Unit has entered programming mode)
7 Operate the lock or unlock button of the transmitters to be programmed; a flash of the HAZARD lights indicates the remote has been successfully programmed into the control unit
8 The HAZARD lights will flash approx 4 seconds after pressing the remote button to indicate the Keyless Entry Control Unit has exited programming mode.

I have locked my keys in my 2005 excursion can I jimmy to unlock?

Lock all the doors from the inside (with all the doors closed), unlock your driver's door by manually lifting the lock, then press it back down after you are out - this will prevent the alarm from sounding when you use the key to unlock the door.