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Many locksmiths have years of experience with the vehicle lock mechanisms but have been hesitant to work with EEPROM technology. To address this, Andromeda Research provides with our locksmith kits a hands-on, step-by-step tutorial which includes an actual 93C56 eeprom. The 93C56, which is commonly found in immobilizers and ECUs, is preprogrammed with automotive data. With the tutorial you will perform a series of exercises designed to teach you how the system works including immobilizer reflashing, PIN code extraction plus eeprom reading and programming.
Our goal is to strip away the mystery and educate you about this technology using a time proven technique; learn by doing. Each locksmith kit includes everything provided in an automotive package plus the special locksmith applications in the system librarian.
In addition there are librarian documentation entries which explain how to attach to the EEPROM see right and confirm that you are getting a good read. The librarian is a versatile software feature which also allows you to create your own files and entries. Locate and hi-lite the vehicle manufacturer.
Press the TAB key and place the cursor on the line with the model and year of the vehicle with which you are working. Press F6 to execute the data on the line chip number and reflash file. Now press F3 then P to program the reflash file into the immobilizer chip. You're done.
The librarian has the instructions at the top of the information pane. The procedure uses the locksmith kit to read the data from the eeprom and save the data to a file. Once the file is created, it is passed to a "Transponder Programmer" or "Key Cloner" which processes the file and creates a key. There are several different transponder programmers Tango, Zed-Bull, MiraClone, AD which are capable of creating a key from the eeprom data file. While all transponder programmers as similar, they do not have identical capabilities and each should be evaluated on its own merits.
The librarian lists the simple, step-by-step procedure, using the buffer editor in word mode to execute a PIN search. Once located you to view the PIN in the correct sequence, not reversed. The PIN in the example image is see bottom of image.
If the key code matches the stored values, the engine will start. However its location under the dash means you will have to remove the entire dash pad. The procedure for reprogramming is similar, however you will have to short two wires on the OBDII port to perform a hand-shaking procedure between the ECUs to program new keys. This is where you need to get a programmer to connect the chip to your PC.
You can either buy a USB programmer from eBay or make your own to communicate to the serial port. The components required are fairly basic, three 4. If you do have problems reading and writing from the chip, you have to short the crystal on the board. PonyProg, a free serial device programmer was the software used to read information from the serial port and "dump" the EEPROM's contents.
First go to setup under options. The content should appear as an array of HEX characters. Each key has a unique 8 digit HEX code. There are also bits to indicate key count, enable programming mode and valet lockout. After a lot of experimentation, it was observed that there are three distinct keys. Each key is an 8 digit HEX value, repeated three times.
It is split across two groups of four, but there is symmetry in their positioning within the dump. This must be zeroed as well. When reconnected to the car, the ECU will be in auto-programming mode and will accept new keys as per the procedure below:.
Briefly insert any key into ignition lock cylinder and remove immediately. The security light should illuminate and remain on.
The Security light may blink indicating it has accepted the key. After seconds remove the first key from the ignition. Security light should remain on indicating you're still in programming mode. After seconds remove the second key from ignition. After security light goes off remove third key from ignition.
The security light should extinguish and then commence to blink regularly. If the security light does not stop blinking, that key is not programmed to the car. This procedure should work on many Toyota and Lexus vehicles from the 's to early 's. Question 6 months ago. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website.
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