Transponder keys are devices designed to transmit a radio signal from a handheld device to a remote receiver. They're most commonly used to unlock and start vehicles, though they're also used in things like gate openers and keyless entry systems. Each one is programmed to only start a specific vehicle, to reduce the possibility of theft. There are a number of ways to bypass transponders, however, most of which can be done with inexpensive equipment.
In vehicular-use transponder keys, introduced in 1995, the transmitter unit consists of a small microchip in the plastic part of a key. The microchip has a unique serial number, which is set during its initial programming. When a person wants to unlock or start a car, the chip sends a request to the car for it to validate the serial number and turn off the engine immobilizers. If the car doesn’t recognize the number, it will remain locked and immobilized. A key that has not been programmed can still turn the engine over, but it won't be able to start it, since the immobilizers will still be activated.
Have your serial number when you call. Figure 5.3 figure 5.4 Neutral Switch Diagnostic Procedure If starter does not engage when shift lever is in neutral: 1. Apply the parking brake. Turn and hold the key to start. – cycle the shift lever in and out of gear several times. If the starter engages, release the key and call American LandMaster.
When reconnected to the car, the ECU will be in auto-programming mode and will accept new keys as per the procedure below:
Flop Turn River
1. Briefly insert any key into ignition lock cylinder and remove immediately. The security light should illuminate and remain on.
2. Insert the first transponder key into ignition lock cylinder for registration DO NOT TURN ON. The Security light may blink indicating it has accepted the key. After 3-5 seconds remove the first key from the ignition. Security light should remain on indicating you're still in programming mode.
3. Insert the second transponder key into ignition lock cylinder for registration DO NOT TURN ON. The Security light may blink indicating it has accepted the key. After 3-5 seconds remove the second key from ignition. Security light should remain on indicating you're still in programming mode.
4. Insert third transponder key into ignition lock cylinder for registration DO NOT TURN ON. After security light goes off remove third key from ignition. The security light should extinguish and then commence to blink regularly.
5. Wait 30 seconds for the programming cycle and programming mode to close.
Hand Converter Poker
The first two keys are internally (inside the ECU) designated as MASTER keys and the 3rd key inserted will be internally designated as the VALET key.
Serial Key Ignition Hand Converter Not Working
As a test, when you insert a MASTER key, the security light
should stop blinking right away. If you insert a VALET key, the security light will remain solid for 2 seconds and then go out. If the security light does not stop blinking, that key is not programmed to the car.