Questionmy 2002 dodge ram 1500 truck keeps going into anti-theft mode and will not start. i get it reset after awhile sometimes it takes about 4 hours.it has been happening for about 2 years now.can you tell me what is wrong,and can i disable it.please help,thank you. Rick
AnswerOk, gotta start off with:
What is a transponder?
A transponder is shortfor: transmitter + responder.
The word came into use around 1944. In basic terms a transponder is a miniaturized electronic chip that has what is called nonvolatile memory. Nonvolatile memory is the type of memory that does not need constant energy for retention. Along with that electronic chip is a set of windings, very fine wire coiled around a tube.These windings look similar to the windings you would find in a electric motor.
There are two basic types of transponders. The first are the Electric Coupled Transponder systems. Electric coupled transponder systems are not limited to small areas for transmission but can transmit messages or signals for different ranges of distance including several inches to miles, as used in Satellites and Airplanes.These systems require large amounts of constant electricity to operate.
The second type is what automobile manufacturer’s are using and they are called Magnetic Coupled Transponder systems. MagneticCoupled Transponder systems are passive in nature. This means they do not require constant electricity and thus do not need a power source of their own. They operate in the frequency range area of 125KHz. Since Magnetic Coupled Transponders do not have their own power source they are very limited to range of communication and generally operate in the range of 1cm to 15cm. Since this is a radio frequency it can penetrate materials that would make the transponder not directly visible, such as the plastic or rubberin the bow of a key.
The process of key identification is similar in most automotive transponder systems. Once a key is inserted into the ignition lock and turned to one of the ‘on’ or ‘run’positions, the induction coil that is mounted around the ignition lock sends out an electromagnet field of energy. The windings in the transponder chip absorb that energy and power the electronic chip to emit a signal. The signal is usually an alphanumeric set of digits which is considered the Identification Code. The induction coil reads the signal and sends it to some type of computer deviceto recognize the signal. If the signal is recognized as being already in the computer’s memory the signal is accepted and other electronic components in the vehicle are set into motion to allow the starting of the vehicle or the continuation of theengine running.
Transponders can be made into several different shapes and sizes and can be used in many different types of applications such as: warehouse pallets, retail clothing, animal management, and of course electronic automobile key identification.
Whew!!
That being said...
There is a way.
You make the ignition code reader think the smart
key is in the ignition at all times.
This keeps the system from arming.
To make it happen, print the following
and give it to your technician:
Go get 2 non transponder keys cut at
the hardware store for 3 bucks each.
Get the Chrysler smart key self learning
bypass module for 63.00 from
ALARMTEK. (write to: INSTALLSUPPORT@AOL.COM
for a payment link if interested.)
The total cost on this is
substantially less than what a dealership
would charge to replace and reprogram keys
all the time.
This is what will work instead of the dealerships
profit margin.
Tell them to overcharge someone else!
ALARMTEK
ALARMTEK.net
