49 52 Toyota/Lexus immobilizer reset files. These files are virgin dumps for different Toyota vehicles, covering from model year 1996 through model year 2005.
These files are to be written in the immobilizer EEPROM chip, located either in the vehicle's Engine Computer (Engine Control Module) or in the immobilizer ECU module (immobox), depending on the model. This will reset the Immobilizer, putting the vehicle in key auto-registering mode, so it accepts your current, old or new keys.
NOTE: For correctly using these files, you will need an EEPROM programmer and an SMD SOIC-8 clip for programming the chip, either in-circuit or off-circuit.
The EEPROM programmer can be any inexpensive type, able to accept serial EEPROMs like the
93C46,
93C56,
93C66,
25020,
25040,
25080 and
95040. About the clip, it is inexpensive and there is a model made by the "3M" Company (black clip) and another made by the "Pomona" Company (blue clip). Both do the same job and both cost around $15.
As mentioned, it is known as an SMD SOIC-8 clip and can be acquired at online electronic catalogs, like Digikey.com. Below are pictures of both clip tools
SMD = Surface-Mount Device
SOIC-8 = Small Outline Integrated Circuit, 8 leads).
The procedure here, is taking out the ECM computer or Immobox from your vehicle, opening it, locating the small 8-legged (pins) immobilizer chip and reprogramming it with the corresponding file. After that, you are ready to reinstall the ECM in your vehicle and drive it with your existing old or new keys. No soldering/desoldering needed as long as you use the clip, which is its purpose. Of course, it can be made without the clip, but you will need to desolder the chip to be programmed and use an SOIC-to-DIP8 adapter for interfacing it with your EEPROM programmer.
These files can be used as many times as you wish, as the EEPROMs can be completely reprogrammed several 1000's of times and you can do this on as many vehicles as you wish, making it ideal for selling the service of resetting the supported Toyota models.
In the picture below, it is shown how the SOIC-8 SMD clip is positioned over the EEPROM chip:
The package includes the files (dumps) and general instructions.
The EEPROM Programmer and SOIC-8 clip are NOT included. Please note that this package is intended for technical personnel and it is not a Do-It-Yourself or DIY product.
SOIC-8 Clips of the "Pomona" brand, can be obtained from Digikey.com in the link below.
POMONA SOIC-8 SMD Clip
Because a wiring harness is needed to use the clip, you may construct your own. It is not difficult, but you may also obtain complete assembled kits from several sources, like the one shown below.
SOIC-8 Assembled Kit
Lastly, you will need a serial EEPROM programmer to read/write the EEPROM chips. While there are both, expensive and non-expensive units available, what is really important is that such unit is able to work with the target device or devices (EEPROMs) you will be working with. Below are two examples of good programmers.
EETOOLS CHIPMAX PROGRAMMER
MCUMALL - PRO GQ-4X Willem Programmer
This is an
INSTANT download product. As soon as purchased, the download will be available from your account on OtherDeal.com.
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