Thanks and please keep it up! This would completely derail the thread if discussed here, but I wanted to say to YOU that I am of the belief that when I buy a car I should legally own ALL of it. Answered March 15, 2017 Electrically Erasable Programmable Read-Only Memory (EEPROM) is a steady, non-volatile memory storage scheme that is used for storing minimal data quantities in computer and electronic systems and devices, such as circuit boards. What this does is provide a way for one to switch between ECUs when testing. On a positive note, if you get into it, your job becomes much more fun. This immo-part can be very helpful: in many cases you have only to solder some vires to the PCB, and you can read/write the needed content. The chip can be read and written to using a serial programmer. EEPROM is a type of ready-only memory that can be modified by the user of the ROM. Pay no attention to the…, Here's my view after zooming out and looking at the big picture. Tim, check out solder​.​net I have thought about taking a class here myself. Information wants to be free. This error message is only visible to WordPress admins, Advanced Automotive Key Generation – EEPROM. Some ECUs you can read out all memory locations, some selected locations and some MAPs only. Even though the EEPROM is capable of more than 1-million programming changes, and is designed to last for hundreds-of-years, it can be sensitive to excessive heat and moisture. EEPROM and flash memory cells use a transistor with a floating gate that holds a charge. EEPROM today refers to data that identifies the ECU to the vehicle. I write notes on each ECU. Knowing what you are getting into becomes interesting. Humans are intuitively curious and driven to explore and discover the unknown. Thank You. The best situation is one where the entire ECU can be copied then pasted to the donor. Some are static and common. I respect your view on this. The reason is OEMs like GM,Ford, Chrysler, BMW, VW/Audi, Jaguar, Land Rover, Toyota/Lexus, Mercedes and others design parts that are one time use. This is different from more standard types of read-only memory that are locked and not subject to any type of modification by the average user. Sometimes it is referring to repairing an ECU at board level. EEPROM - Electrically Erasable programmable read-only memory, is a type of non - volatile memory used in computers and other electronic devices to store relatively small amounts of data but allowing individual bytes to be erased and reprogrammed. EPROMs are used in all kinds of devices, and now it has found its way to automobiles. Therefore the mileage of the original vehicle that the cluster was from will be displayed on the dash. Kind of like a liver transplant. You have to first downgrade the immobilizer, then read the ISN. Once found you just set the clip on the EEPROM, select the vehicle and push the button. EEPROM Iteration: Understand how to go through the EEPROM memory locations. Key Renew for many brands like Audi, BMW, MINI, Porsche, Nissan, Toyota, Fiat, Renault…etc. How to know what EEPROM a car has? However, the main advantage of EEPROM is that one can program and erase its contents while it is still in the system board. My first exposure to this was the Toyota and Lexus vehicles that had ECMs that became boat anchors when you lost the keys. The data can be read and stored on your PC. In order to use second hand parts, you have to be creative. My objective would be to provide education so the path for others will be smoother. I especially…, It has nothing to do with saving a customer $, using salvage parts, working more greener, or giving yourself an "attaboy" because you were told you couldnt. In addition, in EEPROM one can select which byte to be erased, in contrast to UV-EPROM, in which the entire contents of ROM are erased. This is primarily VIN and Immobilizer Data. When I get one that I have to take the walk of shame back to the shop, I make sure I keep up to date on each tools progress. I have yet to have much luck disabling the crystal. I have a binder I keep on every ECU I do. 200…, Chris, A must have.You can’t avoid to get it if you want to do the car work seriously. If the manufacturer has built in a protocol for reprogramming the, The concept of reading the data from the existing module instead of replacing it is known as. Unlike EPROM chips, EEPROMs do not need to be removed from the computer to be modified. Electronics became throw away as imports and cheap production became the…. Engine control unit reading for tuning and cloning operation (will be added soon). Another is free scans from parts stores. Michael I personally find this area of automotive repair very interesting! I have been more and more interested in learning electronics repair on cars lately. Obviously an EEPROM is a specific electronic device. I think it would be a good exercise to grab some of those modules and experiment with them. Mainly the European and Asian variants. What I wrote was more to underscore the language barrier between the two groups: a group called Electrical Engineers comes up with (carefully thought out) terminology and standards. You have and continue to pay your dues in our complex field. If it helps the specific ECU is a Bosch Motronic 7.8 it has 2 Infineon C167xx processors (not sure the exact variant yet) and 800BB (1MB) flash and 95320 (32Kbit) eeprom. You knock, and the MCU asks you a question in the form of HEX code, Ox67 (made up data) Your tool will answer, Ox75 Ox99 (also made up) The MCU will either reject your request or let you in. More and more we are finding that many modules use an EEPROM to store VIN and Immobilizer data. JJ, Website Designed By One Plum Design, As an automotive locksmith we need to be able to identify these different types of systems, know how they operate and what tools are needed to reprogram them. EEPROM stands for Electrically Erasable Programmable Read Only Memory, and is pronounced double-ee-prom or e-e-prom. For many of us the object is not to change the MAPs (Calibration Data) Our objective is to make a second hand part work like the original. BMW for instance uses an ISN code. Never thought about plucking an eeprom off the board thought. The concept of reading the data from the existing module instead of replacing it is known as EEPROM (Electrically Erasable Programmable Read-Only Memory). For example, the EEPROM will let the microprocessor know the frequencies at which the monitor is going to operate. When troubles arise, I reach out to friends on the forums for suggestions. EEPROM Read: Read the EEPROM and send its values to the computer. You would then install the ECU and marry keys to it. Companies like Alienware have cracked many of the keys. All 100% websites with car EEPROM dumps show that all 2006-2010 dashes have a 93c76 chip. Everyone can bring their own project and…, Lots of practical and useful info. Keep the original safe. Some handshakes are many bits of data. We need mentors like you to keep us informed and motivated. This takes special software. It takes special software to massage the EEPROM data based on EEPROM and Flash data from the donor and the original PCM. This will make the key cutting easy or when the key is lost. The memory in a car’s computer ECU that holds the programming to control the running of your engine is called EEPROM or electrically erasable programmable read only memory. All 100% websites with car EEPROM dumps show that all 2006-2010 dashes have a 93c76 chip. The way one can virginize the ECU is by looking for the IC900 EEPROM. EEPROM (electrically erasable programmable read-only memory) is user-modifiable read-only memory that can be erased and reprogrammed (written to) repeatedly through the application of higher than normal electrical voltage. The procedure is similar, though a hand-shaking procedure must be performed between the Transponder ECU and Engine Control Unit before key programming by shorting two wires on the OBDII port for 30 minutes. ”Any work where you have to open up the ECU could be regarded as EEPROM work.” Why would one go to the hassle? It does not require the physical removal of the memory chip from its socket. User could remove the chip from Immobiliser or dashboard and then read pin code via EEPROM. I would be greatly interested in taking a class from you on this subject. The class would have lecture time then hands on work. Whenever the ignition is on and the PCM is energized, EEPROM self-tests are initiated. However, lines like these: It's a long name for a small chip that holds bits of data code that can be rewritten and erased by an electrical charge, one byte at a time. Culturally it is common for us to use terms that are not technically true but are commonly accepted. MED 17 variants are very popular in Ag equipment and European vehicles. Michael, excellent information, I have done some board level repairs in the past, damaged drivers, path repair, and cold solder rework. How to know what EEPROM a car has? The best situation is one where the entire ECU can be copied then pasted to the donor. The EEPROM can then be resoldered to the ECU mainboard. All of them have a different method of cloning or getting to work with a different vehicle. We really appreciate your experience and knowledge you share with us. will make Electrical and Electronics Engineers groan: Having a healthy debate on issues is an important part of society. There are private forums dedicated to discovering the EEPROMs. Odometer information is stored on a small EEPROM chip on the circuit board. Due to system clocks going active, EEPROMs at times have to be removed or the crystal disabled. When one spends 2 to 3 hours every evening studying automotive electronics, some of it actually sticks. A lot of modern microcontrollers – such as the ATmega328 – contain some built-in EEPROM, but that doesn't mean that you can't add more! If there is a mountain in front of us, we climb it. In the picture above, you can see the location of the immobilizer EEPROM. This in turn keeps you from programming your PCM with higher horsepower. The computer part that the EEPROM programmer is supplemental to is the EEPROM microchip, which is a shortening of Electrically Erasable Programmable Read-Only Memory. As reverse engineering has become more astute, the OEMs have become more aggressive in protecting their assets. EEPROM in monitor performs two functions: - When a monitor is switch on it will copies all data or information from the EEPROM to the microprocessor. I really like that line "Being able to repair vehicles without the permission of the OEM is part of that attitude." That way if I get a second opportunity on the same ECU, I can review the process. Thank you. In some cases you can modify the keys known to the car over the ODBII port. One can start with just a soldering iron, hot air workstation and a chip programmer. This type of chip can be erased and reprogrammed using a strong, electronic signal. Soon the $500 investment becomes a gateway to bigger and bigger expenses. Nowadays there are tools like the Auto Pro Pad and iM608 that also can address the Toyota issue. EEPROM Get: Get values from EEPROM and prints as float on serial. Once the data has been read we need to create a course of action to create a prepared transponder that starts the vehicle or manipulate the data as needed to add our chip to the immobilizer. Additionally replacing the ECMs required new modules. I have spent hundreds of hours of research and thousands of…, It's a pandoras box that can't be closed. What this presents is a front door that you have to get through before obtaining the data. The goal would be to give enough information that each student could either break the bank and go for the Gold or choose a more thrifty path to specialize. I was with GM when we started "reprogramming" the EEPROMs on GEO's Storms in the very early 90's. Good for EEPROMs, MCUs, has a good Immo-content. When dealing with EEPROMs there are different ways to read and write them. With all respect for Chris Jacob's argument above, the root of the argument for keeping private the processes you describe seems to be that it protects business interests of one class (those with certain information and capabilities) from erosion by the class of have-nots (ie everybody else), professional or…. Bill, EEPROM Crc: Calculates the CRC of EEPROM contents as if it was an array. The whole eeprom industry has sprung up for many of the reasons Mike has already…, True, I could research on my own (and do), and purchase several tools and junkyard computers to perform experiments with and spend countless hours and untold dollars trying to figure it out, We all contribute as well as glean information. I don't think I can convince anyone of my way of thinking. With the help of an EPROM, you can modify how your ECU manipulates the various functions of your engine. As an answer to who my trainer is, I am self taught. S4.2.3 New Lexus cars with Texas Crypto transponder (4D by Silca). Others are specific to the PCM itself. EEPROM Write: Stores values from an analog input to the EEPROM. As modules become obsolete we are going to either have to scrap perfectly good vehicles or learn how to have modules repaired on a board level. This is because as the data is copied to the ECU it is encrypted and changed. Maybe at least we can gain an understanding for each other's views. Remove motor ECU from the car, open it and find 93C56 EEPROM marked IC900 Use A6 or A4 adapter and follow CarProg instruction to program transponder key. EEPROM work requires a tool (locksmith kit) which is capable of reading data from an eeprom and saving it to a file. diag​.​net/file/f3pkz0q95… ​, Hi Dmitriy, Others you have to open the ECU and interact with a small integrated chip that stores the information. Transponder key is The key is guaranteed to start the car since it was created directly from the original eeprom data. Growing up we called denim jeans Levis even though many companies made jeans with denim. You are able to do things you never expected. The modules can then either be virginized or cloned. 1 Answer I have a Honda Civic 2006. Bosch MED 17 ECUs can be copied but once done will not work. The file is then passed to a "Transponder Programmer" the function of which is to use the eeprom data file to make the key. Even some domestic vehicles use this ECU. Repeat process with donor but program EEPROM with stored data. Like everything else we ask why, follow the money. This is primarily VIN and Immobilizer Data. Clone if you want a plug and play module. If there is not a solution, I respectfully decline the job. In a word, the best car key programmer is a magical device and a vital kit for a modern car safety system. You got me. This is great, Michael. Why would the first group even want to listen to…, You know I'm not much on spreading information like this content. Among these electronic parts, you will find the EEPROM, an electronic part that allows many modifications to improve the car’s engine. What I do know is if there is a buck to…, Hi Chris, Electrically erasable programmable read-only memory (EEPROM) chips are metal oxide semiconductor computer chips that are used on a circuit board. I suppose there is no stopping it but what I will say is; The electronics engineers can and do implement EEPROM chips that will erase themselves if attempting to read. EEPROM which developed by XTOOL is a tool which could use to read chip that needs to be removed when reading IMMO pin code. The mileage on most (Japanese) cars is stored on the instrument cluster itself, and not in the ECU. That's why the human race has survived and thrived and started to venture out into the Cosmos. This saved customers $1K in the difference of cost. As ones ability increases it becomes time to try new things. 1 Answer I have a Honda Civic 2006. The reference in the circuit board for the EEPROM chip is “IC1003“. And that's the guy the toyota dealer calls because I refuse to work for cheap when I've invested so much in my career. Sometimes when working with immobilizer EEPROMs, the ideal way of programming the EEPROM is by doing it while it is in the circuit, as removing it, programming, and resoldering it back to the circuit adds a bit more effort and time to complete the job. Well some of it has. We just want to live our lives without…, Mike, How to get started? Out here in the West we don't like folks telling us we can't do something. Look no further than keycode and nastf. EEPROMs are organized as arrays of floating gate transistors. We sent new calibration files within a cartridge for the Tech1/1A and later the Mastertech 3100. I hope the question is clear. VAG ECU EEPROM Calculato is just a modification of an existing application which allows you now to load/read ECU bin files to calculate login and some other features w/o having the associated interface/hardware plugged in your computer. An example would be replacing coil drivers in a Ford Escape ECU. If it can be done in circuit then you clean the legs of the EEPROM then fasten a clip to it to read. Then solder to test board. It's not the OEM's business anymore if I wanna take it apart and mess with the software, etc.. To do this we need to remove the module from the car and locate the chip where the data is stored. Nowadays, modern cars are equipped with a multitude of electronic components designed to optimize their performance and use. Tim i have to agree with you​.​We all know we can research or read a book or go to trade school or college for our profession​.​We also know there is no replacement for experience in this field.I think taking a class put on by Michael would put you ahead of the game experience wise because your going to learn all the mistakes he made without committing them yourself. In the general North American aftermarket, I believe this was a first for ECUs. It is all a very simple process. As mentioned in earlier post, I am working on a class. Like taking the original and donor Toyota ECUs and cloning the original to the donor. (Wikipedia has an interesting article by that title.) This tool would set the ECU to a virgin state. Sometime between 1998 and now some clever engineers put together a tool called EZ Flasher. The main difference between EPROM chips and Programmable Read-Only Memory (PROM) chips is that the EPROM chips can be programmed more than one time, while PROM chips are not re-programmable. EEPROM Adapter is a hardware which was designed by XTOOL specialized on car models that need to remove the chip to read security code. Remove EEPROM with hot air workstation. Some can be read "in circuit" and some have to be removed from the board and soldered to a test board. Then it is truly plug and play. No OEM software required. The official reasons for this are to prevent chop shops from selling the parts and to limit liability. Newer Toyota/Lexus/Scion cars have a separate transponder ECU under the dashboard instead of having the EEPROM store key info in the ECU. I am going to have to remember this post, another option to keep an older vehicle going a little longer. There are several software programs and chip preparation tools that each have varying abilities and can facilitate the preparation of these chips for the vehicle. What other modules typically store data using EEPROM, clusters? This work has become known as eeprom work. XTOOL EEPROM Adapter is designed for X100 PRO /X200S / X300 Plus / X100 Pad Chip socket has 3 chip types: 3XXX, 25 (95) XXX and 24XXX EEPROM, or E lectrically E rasable P rogrammable R ead- O nly M emory, is a type of device that allows you to store small chunks of data and retrieve it later even if the device has been power cycled. Sorry to hit you with what I'm sure are simple questions for you, but this stuff is fascinating and doesn't seem like it's discussed all that often. I currently do alot of programming and electrical work but nothing like this. National Institute for Automotive Service Excellence. They are not programmable with OEM tools. I think culturally we come from a different place. Parts people couldnt resist public pressure for clearing codes so now welcome the secure gateway module. Back in the day television and radio repair was a job people made money doing. Below is a picture to be used as a reference. The ISN then needs to be programmed to the DME (ECU). It does not burn the original and the immobilizer does not know the difference. The article was not meant to be a technical paper. So, when you say "EEPROM" obviously, I recollect different specific use cases from a different time. This latter work is what is known as eeprom work and what I plan to focus on. The EEPROM is used to store the current settings of the monitor. Another group, "EEPROM techs", appropriates the terminology, but changes the meaning as they like. That's a pandoras box that was kicked open and you see drastic measure's being taking to curb the effects. Working to improve the quality of vehicle repair and service by testing and certifying automotive professionals. Bosch has multiple versions of Engine ECUs. Body control? Any work where you have to open up the ECU could be regarded as EEPROM work. More and more technicians are realizing that the OEMs have been making our life difficult when exchanging modules. Thanks (note: I'm not…, Yes. Chris Jacob- The EEPROM you will work with is near one of the two micro-controllers of the ECM. Some of the best sources are also on this forum. The EEPROM and new PCM will the need to be programmed as a unit. For many of us the object is not to change the MAPs (Calibration Data) Our objective is to make a second hand part work like the original. Erasable Programmable Read-Only Memory (EPROM) refers to a type of computer chip that can hold a small amount of data in resident memory. The OEMs have begun moving away from using a separate EEPROM and have chosen MCUs (Microprocessors) with multiple memory locations capable of caching data. By this same standard the toyota eeprom job you spoke about has an average going rate in my town of 200.00 bucks. OR, I could find someone who has done all that (like Michael), pay him or her for their hard-earned knowledge and time, potentially avoid making bad equipment purchases and fast-track my abilities to start…. We refer to all adhesive bandages as Band Aids. An EEPROM programmer is a device which allows access to and rewriting of data that is stored on an EEPROM microchip. After reading the data and interpreting it we either need to save the data back to the chip or prepare the blank transponder as needed. Would a trip to a junk yard for some cheap used modules be a good idea for someone interested in getting their feet wet in this type of work? Virginize if you plan on using OEM software to program. Dashboard EEPROM M35080, M35160, 080D0WQ, 160D0WQ reset in few seconds. “EEPROM today refers to data that identifies the ECU to the vehicle.” In other words, the eeprom doesn't have a address mapping per se, but portions can be read and worked with in ram. Users can remove code chip by himself from vehicle anti-theft case,dashboard and other code saving control unit and read code by eeprom adapter. Short quartz resonator for in-circuit EEPROM programming or remove 93C56 from ECU board. Get the one that comes with remote control, EEPROM adapter, and free shipping like a pro. By the way, I don't have Facebook for various reasons, so I can't reply to that post, but I would still be interested in the class. What is the difference between what Mike is trying to spread,compared to what all of the ECU and Module" rebuilders" on the market are already doing? Craig. Apple devices were the first to implement this feature to prevent independent repair facilities from performing repairs. Craig, Mike, Keep up the outstanding work! Sodas are commonly referred to…, Michael, I see your point, and I do not have a horse in this race. EEPROM today refers to data that identifies the ECU to the vehicle. It's a bell that can't be un-rang. Finally the immobilizer is installed back in the vehicle and the car is ready to hit the streets of Portland once again. This is just like a new one works. By using this SEED / KEY process the OEMs keep you out of the MAP and other sections of the PCM. Aquire or purchase a pile of used ecms? This memory can be programmed and reprogrammed electrically to be able to upgrade or change the programming that controls the engine functions. It's just what we do. You can make otherwise worthless parts a new life in a new car. Similar to using J2534, you will find that there are huge holes to fill. Solution, I recollect different specific use cases from a different vehicle the ECM and later the 3100! 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