The appearance of car anti-theft chip generally has:

1. Glass tube

2. Ceramics

3. Electronic chip

The electronic chip and the remote control circuit board are together, the chip is successfully matched, and the remote control is automatically produced, similar to the general series, the Peugeot Citroen series and so on.

1. Principle of chip key anti-theft

The automobile electronic anti-theft system communicates with the engine control computer, and the engine is allowed to start only after the code in the key chip is recognized.

2. Types of car key chips:

   1) Fixed code

   2) Rolling code

   3.) Encryption code

1) Fixed code: The code is fixed and consists of numbers and English letters (when the engine is started, the data will not change)

2) Rolling code: Each key has a different bag code, but every time the key is used to start the vehicle engine, the code will be changed. Only the chip controller manufacturer knows the procedure for changing the code, and it is difficult to read it. If the memory of the chip is cracked.

3) Encryption code: The encryption code is used for the latest chip and chip controller (using two-way data encryption). It is equipped with an internal program algorithm to decrypt the encrypted information each time.

Features:

(1) The electronic key adopts the safest American high-tech antimagnetic chip, does not need battery power supply, is waterproof, dustproof and shockproof. Every electronic key is a rolling code technology, the world's only ─ coding, can not be copied, can not be imitated, can not be changed.

(2)The digital lock can be installed in any convenient and concealed place in the car according to the owner's habits, and only the owner knows the position of unlocking.

(3) The identification distance of electronic keys and chip induction locks is controlled within 10cm, which completely solves the possibility of decoding and cracking in the air by decoding and scanning, and truly prevents interference.

(4) The control host is equipped with a built-in secondary anti-theft device, which can more effectively prevent malicious cutting of the line and destroy the host and other car thefts, and further strengthen the anti-theft function.

(5) It is easy to install and use, does not change the state of the original car system, does not abandon the original car remote control device, and does not have to worry about replacing the battery. At the same time, the system itself has the functions of self-detection and self-protection, which is more convenient to use.

At present, the chip-type anti-theft has developed to the fourth generation. The latest fourth-generation electronic anti-theft chip has a special diagnostic function, that is, the authorized person can obtain the historical information of the anti-theft system when reading the secret information of the key. The number of authorized spare keys, time stamps, and other background information in the system become an integral part of the transceiver's security features.

Basic knowledge of four-generation anti-theft system matching (take Audi and Volkswagen as examples)

1. How to distinguish the generation of anti-theft system:

The A4L, Q5 remote control and the anti-theft chip are the same and can be used universally (the remote control model is: 754C 754J). In 2011, the A5 is the 5th generation anti-theft, and the Magotan 2012 is still the 4th generation anti-theft. The cc adopts the 4th generation anti-theft, but it needs 5 Generation anti-theft coil, A6L 2012 is the fifth generation anti-theft, A7, A8 after 2011 is the fifth generation anti-theft, Touareg after 2011 is the fifth generation anti-theft, most from 2007 to 2008 are 3.5 generations, and basically all after 2009 It is a 4th generation anti-theft. After 11 years, there will be 4 and 5 generations.

The fourth-generation electronic anti-theft system is more effective than previous electronic anti-theft systems, and has other advanced features: its unique radio frequency identification technology (RFID) can ensure that the system can correctly identify driving under any circumstances. When the driver is approaching or away from the vehicle, it can automatically recognize its identity and automatically open or close the car lock; whether in or outside the car, the original

The 4th generation anti-theft, the 5th generation anti-theft, there is no traditional anti-theft lamp, most of the 5th generation anti-theft are smart keys. Most of the 4th generation anti-theft is a crystal-labeled remote control. The common anti-theft lights are: NO KEY, no key found, anti-theft system activation, anti-theft system failure, SAFE, etc.

2. Matters needing attention when matching the fourth-generation anti-theft system:

1. Tiguan and LaVida 1.4T are four generations of anti-theft (LaVida 1.6T and 2.0 use 3.5-generation anti-theft systems, and you need to change the key to learn when matching). The matching method of Sagitar 1.4T, Golf and Touran is the same as that of New Bora. You can add new keys by entering the original keys of the plug-in, and you can add the keys directly after placing them in the coil to generate dealers. Calm down on occasional black screens on Tiguan. Normally, it is OK to recover from power failure.

2. The operation method of losing all Magotan CC and adding keys is the same. You must disassemble the comfort computer, find the chip 95320, and read the data. To generate the dealer key, you need to load the 95320 data to find the firmware protection bytes to be successfully generated. When adding the key, read the prompt carefully. First, do not rush to click "OK". When you hear the sound of sucking the key, change another key to ON within 3 seconds, that is, after the key is changed, the confirmation will be clicked 3 seconds. If there is a black screen on the meter, you need to short-circuit the relay to keep the meter powered. After reading the data of Comfort Computer, do not get in the car, otherwise the data cannot be synchronized, which is also the reason for the unsuccessful operation.

2. The operation method of losing all Magotan CC and adding keys is the same. You must disassemble the comfort computer, find the chip 95320, and read the data. To generate the dealer key, you need to load the 95320 data to find the firmware protection bytes to be successfully generated. When adding the key, read the prompt carefully. First, do not rush to click "OK". When you hear the sound of sucking the key, change another key to ON within 3 seconds, that is, after the key is changed, the confirmation will be clicked 3 seconds. If there is a black screen on the meter, you need to short-circuit the relay to keep the meter powered. After reading the data of Comfort Computer, do not get in the car, otherwise the data cannot be synchronized, which is also the reason for the unsuccessful operation. 

3. A6L Q7 fourth-generation anti-theft method: enter the plug-in add, you need to operate the key change step, the remote control is smart AL, if the instrument does not communicate, the relay should also be shorted.

4. If A8 fails, you don't need to worry about it and don't short-circuit the relay. Only keep the brakes and turn on the high beam until the meter lights up. For the 6 bytes, you need to find the 7th byte. You don't need to worry about it the first time you need to change the key for the second time.

5. A6L 2.4 Siemens uses Q7 to enter. A6 uses the third option operation (using the car key to read the EPROM data and save it to generate dealer learning), remember to confirm after changing the key. Some Siemens need to dismantle the engine computer to increase, the instrument screen is blank, power off and then connect it to OK.

6. The TT3.5 generation can learn the key directly as long as it generates TP25 and enters the VAG.

7. In 11 years, all the keys of Touran were lost and increased. Enter the VAG and the motivation control unit to read the EEPROM data and save it, get the password and CS code, enter the key learning (advanced plug-in generation TA3 chip), automatic diagnosis, use the CS code to generate the dealer key, return to the key learning (total number of keys, fill in the password) and follow the prompts Click OK after changing the key.

8. Touareg matching keys need to learn how to change keys, no matter whether it is smart or not. Match by entering VAG, enter the engine to read the CS code and anti-theft password. Enter key learning and use CS to generate dealer keys. If it appears that the seventh byte is 00, you can find the seventh byte by holding the car key. Precautions for the key change steps: Don't worry about changing the key for the first time, just click OK. When it appears the second time, you need to change all the keys before clicking OK. The same is true for the Porsche Cayenne.

9. Passat B7 color screen is smart, enter the plug-in, read the data and save it, and generate the dealer key. Choose the third option when operating the learning key. (The first item is only activated, the second item is only activated and remote control is not smart, and the third item has it), steering wheel

3.The distinction of remote control:

New Polo, New Passat, Golf 6, New Sagitar, (all locks are the same) remote control model: 202AD (753AB), the remote control key model of New Passat is: 753AB 202AD 202E 202AJ 202E 500 a 48. The new Polo 200 is 202ADO, the Passat Lingyu 4th generation 202AD after 2009, A6 TT remote control with MNP universal.

Skoda's new remote control type 202H 434MHZ, Octavia remote control before 2009 is L 09 and then 202AD or N, enter the 09 system 01 channel, Haorui has 753N. In 2008, the Skoda remote control model was L, and the Octavia 1.6L generation TP2401.8 generated TA4 in 10 years.

Porsche Cayenne is mostly 434, smart is 315.