Auto Transponder Key Chip Work Principle

What is auto transponder key chip?

Transponder key chip in the field of automotive application,it is called magnetic coupling forwarding system.The magnetic coupling forwarding system is essentially passive,the chip is not need a constant power supply.When the chip at the range of 125KHz of electromagnetic wave,the transponder chip will produce a set of code signal,the range usually from 1cm~15cm.This code signal is a radio frequency,it can penetrate the physical materials so that the chip can be located in interior of the smart key, laser cut all-in-one, switchblade.

 

Ignition Key Transponders Video

 

Auto Transponder Key Chip Work Principle:

 

Usually,in most car immobilizer system,the identification of the chip is similar. When you insert the key into ignition and turn it to “ON” position or start engine,the induction coil around the ignition will send an electromagnetic wave.The electromagnetic wave make the transponder chip of key inserted on ignition produce an encoded signal.Usually the signal is an alphanumeric sequence,which is recognized as an identification code.The identification code will be sent to ECU(Electronic Control Unit).If the signal is recognized as a signal that stored in the ECU memory(get authorization),then the key can perform locking,unlock,starting engine and other function.

 

How To Bypass Transponder Chip Key:

 

Take your transponder key and place the plastic head in a pair of pliers. Gently grasp the pliers and work off the key head. If it will not slip off easily, grasp the metal end of the key with the flat surface of the other pliers and gently pull in opposite directions until the head slips off. Do not pull with the pliers by grasping the key’s teeth; you will compromise the key’s ability to turn the tumblers in your ignition.

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More info read article:How To Bypass Transponder Chip Key (Video Guide)

 

Auto Transponder Key Chips Classification

1 Fixed code chip

The code of fixed chip is fixed,the code is a set of alphanumeric sequence made up by numbers,letters.When you starting the engine,the alphanumeric sequence is fixed.

 

2 Rolling code chip

This type transponder key chip is more safer than fixed code chip.Because each button of key correspond a different electronic code,and the codes will change when you start the engine each time,so it hardly to copy the key chip codes.

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Detail information read article:

How To Choice Transponder Key Chip Type:Chips Classification