Car key matching is often encountered in the case maintenance staff for special maintenance station, the use of the original fault diagnostic work can complete the corresponding match, but for those of ordinary maintenance companies, to provide support if there is no specialized equipment to handle the key is lost when the vehicle is often helpless. Buy original fault diagnostic need to invest a lot of money, but even after the purchase for a key match, a lot of other features may be idle. Key match instrument there, so companies can target major car repair, a small amount of capital investment, the purchase of a single key can be used to match the capabilities of specialized equipment, maintenance companies bring a lot to the general convenience. The instrument automatically reads the chip key password and the password is written to Match within the engine control unit chip. Complete loss of vehicle keys can be matched without any replacement control unit skp-900.
First, the key instrument to use to match
Key matching principle is the use of the instrument by means of the relevant models connector will read out the anti-theft control module EWS internal CPU data, the end-device to read data written to the new key to complete the match. It should be noted that the keys are write-once, not repeatedly rewriting, that match too old and can no longer match the key, so the key or key to match the chip must be new.
1 skp900 read key data
(1) Press the Read button to read the sensor data in the instrument status.
(2) the need to match the key close to the sensing area, the instrument began to read the sensor data key, the instrument will have voice and text prompts to read the description of the key data has been completed.
2 write key data
(1) controls the engine control unit in the memory chip split out, clean the chip into the fixture and tighten the seat lock into the instrument.
(2) According to the menu, select the corresponding models, the instrument will prompt the appropriate corresponding chip model cars, the engine control unit in the memory chip specific location. Then press the programming key to the induction key code data read write memory chip in the engine control unit, the instrument LED light flashes when data is being written, the instrument will sound and text prompts to finish writing data after the data successfully.
(3) written after the chip data Refit the engine control unit, the key match is completed, the new key to start the vehicle matched up. Key matching instrument generally match multiple keys at the same time, just repeat the above steps.
3. Instrument issues that need attention
(1) Key matching function key will clear all previous legal code.
(2) must be all the car keys, including the new key with the engine control unit or the immobilizer control unit match, while completing the matching process.
(3) If you lose a legitimate key, for safety reasons, must be a new key matching program. This allows the lost key becomes illegal, you can not start the engine.
Second, the use of a key instrument to solve practical problems matching
Although the shape of the keys and buttons matching instrument vary, but using methods similar, BMW key match in this instrument, for example, for the key match of frequently encountered in maintenance, repair explore how to use the instrument to solve practical problems.
1 M1 safe operation mode operation
Safe operation mode refers to the chip set will be encrypted with a key that matches the pattern. The CPU is 2D47J theft control module EWS3A (eg annual 2001 BMW 520i), for example, select the model, follow the picture content related operations, the system will prompt the mode switch to the M1, M1 indicator light should be bright red. Read and save data, remember to save the data path (by default stored in the C disk device → ProgramFiles → BMW Key Programmer → UserBackFile inside, namely C: \ ProgramFiles \ BMW Key Programmer \ UserBackFile). During operation should remember the file name, such as [EWS3A_2D47J_2001-2006_2007-03-23_0006.BIN], save your data after the key match, the system enters matching key interface. In this brief introduction for the matching procedure.
Set the mode switch to the M2, M2 indicator should light.
Select the correct COM port, to be consistent with system testing, such as COM3 (Device port can only be used within the COM1 ~ 4 in any port).
(2) Open the file matches the key, according to the previously saved file path to find the file, usually in C: \ ProgramFiles \ BMW Key Programmer \ UserBackFile inside, as in the above example [EWS3A_2D47J_2001-2006_2007-03-23_0006.BIN], Click Open.
(3) marquee input key number (0-9), can not be duplicated, such as had been the first two, the new feature must be the first two away.
(4) the new key or chip placed in the correct key instrument graphics sensing area, click on the “Program” button. At this point, if the equipment is not flashing lights, and no description of the device information window prompt induction into the key or chip, or chip should be a key move slightly up or down position, and then try again. Help write signal indicator flashes faster the better, generally about matching 30s to finish writing the data to match the success of the instrument will prompt the appropriate graphic.
2 the operation of the conventional operation mode M2
Normal operation mode M2 is mainly applied to the CPU data matching without encryption to protect the EWS. The CPU is 0D46J theft control module EWS3B example, select the model, follow the picture content related operations, according to the reading screen prompts to enter the key match.
Set the mode switch to the M2, M2 should be bright lights, key interface into the match after regular follow these steps:
(1) Select the correct COM port, and the system must be tested to the same, such as COM3.
(2) Select the EWS type, such as EWS2 or EWS3, in this case we want to match the EWS3.
(3) Click to read the key anti-theft control module EWS read the CPU internal data.
(4) Click the Save button to save the data, the data is very important in case of loss of data recoverability.
(5) Enter key marquee number (0 to 9), can not be duplicated, such as the original first two have, with the new CAP must be other than two.
(6) The new key or chip key correctly placed into the instrument graphics sensing area and click the “Programming” button superobd skp900.
If you click on the device after the indicator is not flashing, and no description of the device information window prompt induction into the key or chip, or chip keys should be under the direction of the light up or move the location, and then try again. Help write signal indicator flashes faster the better, generally about matching 30s to finish writing the data to match the success of the instrument will prompt the appropriate graphic.