An Overview of Keyless Remotes

I’ve been an automotive locksmith for over 35 years, and keyless remotes have been around for about half of that time. Through the years, I have learned that only two rules apply when it comes to working with keyless remotes: There are no...

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Using the programming procedure for my vehicle that was supplied along with the remote purchased from KeylessRide, I programmed the car to accept both remotes. This programming procedure is also available from other sources such as the “Autodata” book shown in photo 4, through “Alldata,” from the dealer, and other sources. Regardless of where you obtain the procedure, you must follow the procedure to the letter.

Below are the steps needed to program this particular vehicle using on-board programming:

Step 1: Open the trunk and leave it open throughout the programming (photo 5).

Step 2: Enter the vehicle and lock both doors.

Step 3: Insert the ignition key fully into the ignition lock and then remove it more than six times in ten seconds (photo 6). When this procedure is complete, all existing remotes will have been erased from the system.

Step 4: Unlock and then relock the door using the manual lock control – NOT the power door lock control (photo 7).

Step 5: Press the lock button on the first remote to be programmed. The first remote should now be programmed (photo 8).

Step 6: To program additional remotes, unlock and then relock the door using the manual lock control – NOT the power door lock control (photo 7 again).

Step 7: Press the lock button on the second remote to be programmed (photo 9).

Repeat steps six and seven for additional remotes up to a maximum of four remotes.

The above programming procedure applies only to Nissan 300ZX vehicles made in 1994 and 1995, but it is typical of the general type of programming that used on many vehicles. Once this procedure was completed, both of the new remotes worked properly.

1999 Chevrolet Astro

Photo 10 shows a 1999 Chevrolet Astro. Once again, this is my personal vehicle, but this time, I will be programming in an original GM remote. This vehicle requires the use of a jumper wire to close the circuit between two pins in the OBD port. A jumper wire can be made from just about anything conductive; in fact I’ve used a paperclip for this job on many occasions. The jumper wire that I’ll be using here is just a short piece of wire with both ends stripped back and tinned with a soldering iron.

Step 1: Photo 11 shows the OBD connector from my Astro van. Each pin in the plug is assigned a number in the order shown in the photo. For this programming, the instructions tell us to connect pins four and eight with the jumper wire as shown in photo 12. As soon as the circuit is complete, the power door locks on all of the doors will cycle from lock to unlock. All of the remotes that were programmed into the vehicle have now been erased from memory.

Step 2: Press and hold both the lock and unlock buttons on the first remote as shown on photo 13 until the power door locks cycle. The new remote is now programmed.

Step 3: A maximum of four remotes can be programmed into this vehicle. If additional remotes are needed, repeat step two for each of the new remotes.

Step 4: to complete the programming, remove the jumper wire and test each of the remotes.

Cloning Procedures

Through the years, several cloning devices have been marketed to locksmiths, all with the same basic operation. First you will have to determine the frequency of the remote, then select a compatible remote, copy all of the information from the original remote into your cloning device and then download that information into the new remote.

After you have determined that the remote is cloneable, the next step is to verify the frequency on which it operates. Older devices require you to place your remote in contact with the device and press any button on the remote. The display should now show the frequency of the remote as illustrated in photo 14.

After you have determined the frequency and made sure that you have a compatible remote to work with, you are ready to copy the information from the original remote. Begin by pressing and holding one button at a time on the remote while it is in contact with the reader as shown in photo 15. The reader will tell you when it has successfully read the information for each button on the remote, and when to move on to the next button.

After the original remote has been successfully copied into the cloning device, connect the new remote to the device by way of a cable as shown in photo 16. The information that has been saved into the cloning device is then downloaded into the new remote, and if all goes well the new remote will now operate the vehicle properly. If any mistakes were made, such as assigning the trunk opening function to the door lock button, the remote can be re-read and re-programmed until the functions are correct.

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