Immobilizer does not see the key. Immobilizer does not see the key, what to do car owner and how to start an "iron horse"? What to do if the immobilizer does not see the key

Stephen Spielberg looked into the water when he wrote a script for the film "Duel", where the fuel carrier Petersbilt survived the peaceful population. What to talk about trucks, if today even the most harmless Ford Fiesta can greatly spoil the nerves to his owner. Because of one small box, which paralyzes the car tightly.

Immobilizer: Translation difficulties

By creating an anti-theft device with the possibility of blocking all systems and knots of the car, or almost all, the engineers thought out every trifle and, it seemed to have invested the full meaning of the word "Immobiliser" - a device, paralyzing car, as an antelope after a cauit of a poisonous snake. The principle of action of the anti-theft device is quite simple. It consists of several main components, one way or another integrated into the car control system.

First of all, this is an electronic module, a brain center that decides how precisely to prevent the hijacker to hover the car. The electronic unit control is connected to the nervous system of the car and can paralyze the operation of the ignition system, then the injection system, and then lead the brake in the non-working state, automatic gearbox and power steering. In short, he is still a saboteur.

Without the main source of the signal and its receiver, the EB control of the device does not make any sense. All three elements are interconnected, and the system works quietly and imperceptibly as follows. The owner of the machine has a master key in which the chip transmitter is integrated is a small electronic circuit. As soon as the key together with the driver appears in the visibility zone of the receiver, or the key is already inserted into the lock, the system removes the car with protection. Special code that is registered once at the factory, unique and unique. He knows only the master key and receiver who hides in the depths of the car, sometimes even the owner himself does not know where.

If the immobilizer is faulty

Ideally, everything looks great. There is a key - the immobilizer unlocks the car, and when trying toft, without a master key, even if the hijacker started the engine, the device suddenly paralyzes the car and restore performance The cars will be very problematic. Only there are other cases.

For example, what if the immobilizer does not see the key? This happens to completely and next, as a rule, the owners inexpensive carsAlthough there are also unpleasant exceptions. However, the panic is not necessary and the experience of communication with the swollen guard suggested several algorithms of exit from a difficult situation. Here are the most common.

1. If the immobilizer focuses on the focus refuses to recognize the native key, although another hour ago everything worked perfectly, you need to take advantage of the duplicate without a panic. He must be at least in one instance. It worked? Excellent, it means that the whole thing is in the key. Perhaps it can still be reanimated, but this is not a fact. Most likely, you will have to be content with the last key and take care of it as the Zenitsa Oka.
2. Not such a rainbow situation, but still not hopeless - immobilizer stopped seeing the last key and in this case without any assistance do it. You need to call the service service that reprograms the ECU and introduces the key to the device again. To do this, you need to know the PIN code, which one time produces a manufacturer.
3. Coursaver. Not the most promising option, because they will have to buy a special device that will emulate the presence of a master key. Passage can be made and with your own hands, but for this you need to have non-served knowledge in the field of automotive electronics.
4. Faults of the receiving antenna. Perhaps the most common case of device failures. Here you can blame and bad contact in connections, and mechanical damage to the antenna, but even if you successfully clean all the contacts, the failure is the first signal that the immobilizer requires prevention.

And yet, any amateur in this matter can increase the cost of repair several times, therefore it is still better to pay the guys who will eliminate the malfunction and give a guarantee than to expect new episodes from Stephen Spielberg.

Modern machines cannot be imagined without a security system that would hijack. If there was nothing in the old cars VAZ, then there is already an immobilizer on the modern, the same prior and Kalina. In order to understand the problems of immobilizer, you must first form an understanding of this concept.

What is immobilizer

If you buy a decent car, the manufacturer has already equipped his protection in the form of immobilizer. This is the most common and effective tool in the fight against the traffic accident.

If we speak simple words, the immobilizer prevents any kind of attempt to make a car if the key in which the key is inserted into the lock, in which there is a unique chip. If you even insert the "empty" key into the lock, the device will see that the chip is not, and refuses to start the engine.

When you turn the ignition and on dashboard Light bulbs light up, and then go out, at the same time the immobilizer reads the code from the chip, and if it is correct, then allows you to start the engine. If the chip is incorrect, the immobilizer blocks all sorts of ways to move from the place except with the help of a tug.

Many car enthusiasts after buying a car, energize the desire to increase the security of their car and put the alarm. However, if you have a car with immobilizer, it may be a bit problematic.

Immobilizer does not allow to use alarm with automatic start. To solve this problem, you can use the immobilizer crawling module, improving the security of your machine.

Symptoms of problems with immobilizer

It is worth noting that the system perfectly protects the car from the hijacking and is quite reliable. However, if you notice that it works not as it should be, it is better not to resort to the help of lovers, but immediately turn to professionals, because this question requires you to give him due attention.

The main signs of the presence of problems with the immobilizer:

1. When trying to start the engine, the starter does not rotate the engine.
2. Trying to start the engine, you hear that the starter "turns" the engine, but it does not start.
3. You noticed that the appropriate light bulb flashes on the dashboard.
4. When you try to open / close the car using a key fob, it does not react (first change the batteries).

These are the most common features found on many cars. If you have seen a problem in the list, it may be so that your immobilizer needs flashing or restoration of software.

If you just try not to notice the existing problem, it may pour out a more substantial problem in the future.

Fault groups

All immobilizer malfunctions can be divided into two categories, each of which has a way to eliminate the problem, as well as the degree of its complexity. As a rule, in most cases the device is subject to recovery:

• Software faults. Such problems arise due to software failure. It can be a disinxcline of a device with a chip code and a motor block where the signal is running. There may be another immobilizer error, but most of them are quite simple and quickly solved: it is necessary to refer to a specialist who quickly reprogram the device and erase errors.
• Hardware breakdowns. This concerns mechanical damage to the device, which causes failures in its work. The defects on the board of the device, damage to the wires and the power system, the failure of the switching loop can also be attributed. Mechanical problems are also quite quickly eliminated in service centers.

Buying a car with this security system, you must get a set of two keys. If you were given an incomplete kit, or you lost one of them, you need to urgently make a new one and reflash the device, otherwise there is a possibility that your car can sob.

Remember that if you started watching interruptions in your device or you want to install this device on your car, it is best to contact official service centers, securing yourself from possible scammers.

Summing up, it can be noted that the immobilizer is a difficult system, with the right use of which it will provide good safety. Explore the rules for using this device so that it works correctly. If you needed for any reason repair of the device, then it is better to contact the competent specialists, it will be a guarantee for uninterrupted work in the future, and from risk to become affected by hijacking.

Video

An example of solving the hardware problem of the immobilizer:

How to flash the working keys for Lada Grant, see below:

Immobilizer is a car protection system. His goal is to protect the car from the hijacking, achieved by blocking the electrical fuel supply circuits, starter, ignition.

What is the immobilizer?

What is the difference between the immobilizer from the usual car protection system? The fact that with him the degree of protection vehicle much higher. This device has an incomparable more complex intelligent system. You can manage this mechanism from a close distance, that is, the "lock key", and not remotely, as usual. Therefore, at the time of opening the car, the attackers will not be able to intercept the radio signal, which comes from the key chain of the protective device.

Machines whose owners prefer to make repairs in dubious workshops are subject to some risk. Make a "copy" from the original alarm keyfob is very simple, takes it a few minutes. Save the car already with an existing copy of the keyfob will be easier than simple. But a copy of the key of the immobilizer system is very difficult, because the attacker does not have a master card.

Modern immobilizers are famous for their compactness. Their installation occurs in hidden from the strange eyes. For proper installation Immobilizer, determine the type of car protection and its location is almost unrealistic. And that is not all. In some types of immobilizers, the "Protection against Robbery" function is built, which can work without the participation of the owner of the car.

What elements are included in the design of the immobilizer?

The main component of the immobilizer is the electronic control unit.His work provides a microcircuit, "stitched" under a specific action program. The microcircuit has an exchange code that is used in the "survey" of the machine key. Even in the immobilizer system there is a so-called coil, which reads information from the key.

A second, no less important element of the system is the actuator. It has one or more electromagnetic relays. On the command of the electronic control unit, the switching mechanisms tear the chains of signals entering various the most important elements car. If necessary, you can additionally connect the electromagnetic system to block the operation of non-electrical devices.

And the third element is a special programmed chip - transponder.It is located in each ignition key to a specific car. Only after recognition of the unique code, the electronic control unit provides a "resolution" to start the car engine.

Methods and the process of unlocking immobilizer

There are two methods of unlocking the immobilizer: unlocking the immobilizer with an IR transmitter and unlocking the control button \\ s.

Description of unlocking immobilizer with an IR transmitter

This method of unlocking is not suitable for all machines, but only for those in which there is a key with an IR transmitter, which controls the immobilizer and the central lock. To disable immobilizer, you need a code (number of 4 digits). It is introduced when using the gas pedal and control buttons on-board computerwhich is located on the end of the wiper switch.

Unlock process:

When the immobilizer is enabled, we turn on the ignition. The immobilizer lamp flashes, which speaks about a blocked motor.

All actions are carried out only once for both keys. If only one key tied, then one will work, and the other is not.

Description of the unlocking of the immobilizer by the control button of the central lock

To disable immobilizer, enter the emergency code:

1. Turn off the ignition, the device light bulb slowly flashes.

2. Turn on the ignition, the injection lamp will turn around for three seconds and then turns off, and the flashing of the immobilizer lamp will accelerate.

3. Click and hold the control button \\ s. The signal red lamp will stop burning.

4. When the control button is pressed, the flashing lamp flashing is reduced by this generating a counting sequence. We carry out the number of inclusions of the lamp and then let go when coincided with the first digit of the code.

5. Then press the C \\ s button again and hold. When the number of blinks coincides with the second digit of the code, the release button is released.

6. The same actions are carried out for the other digits of the code.

You can start the engine if everything is done correctly. The immobilizer lamp will light up for 3C, then goes out for 3C, and then lights up again for 30s. The lamp will remind the absence of a vehicle protection each time the ignition is turned on. Immobilizer will again block the car:

When disabled AKB.

Automatically after 10 seconds after the ignition is disconnected.

When the ignition is turned off, you can repeat the input of the code. If the code is incorrect three times, the next attempt will be available after five minutes. Attention! All of the above actions are not suitable for decoding a computer or code electroclap. Enter the emergency code you can only start the engine.

Immobilizer (or in a different immobilizer) became a mandatory device in cars since the 90s of the last century. It prevents the engine launch using the "non-" key in the case of a car'sft or unauthorized penetration.

In the practice of the car's operation, the native key is inserted into the ignition lock, but the immobilizer does not see it (it refuses to recognize it), the machine does not start, either start and stalls after a few seconds. What to do in such situations?

The principle of work Immobilizer

The immobilizer system includes the following devices:

• chip, built-in key;
• pump loop, usually located near the ignition lock or card reader (if a card is used as a key);
• in some cars, a radio channel operating up to 5 meters is used to survey the chip;
• immobilizer unit;
• the engine control unit.

Sometimes pump loop and immobilizer unit are combined into a single constructive block.

At the time of switching on the ignition on the pump loop, pulse voltage is entered to activate the chip. Next, the loop reads the identification code of the chip located in the key. The data is entered into the immobilizer unit.

Most often, this unit is located in the center of the central console in the car. It forms a special code that is transmitted to the engine control unit. If this code matches the actual, the control unit works in normal mode, allowing the engine start. Otherwise, the engine control unit blocks the engine start or starts it for a few seconds, then jammed.

Video - a specialist story about how Immobilizer works:

The algorithm of the immobilizer is complicated, so the immobilizer malfunction refers to the category of critical. In most cases, a specialist intervention is required to solve this problem, and, not just an autoelectric, and a chipover who has equipment for working with immobilizers and the corresponding experience. Such works are expensive.

The immobilizer blocking is very difficult to bypass, much more difficult than car alarm or an abnormal immobilizer. Usually blocked fuel, ignition systems, starter circuit. Even if you manage to somehow start the engine, bypassing the lock, the maintenance of the car in normal mode will be difficult.

Before making a decision on contacting a specialized service station, it is necessary to make a number of operations in order to accurately make sure that the problem is in the electronic part of the immobilizer system.

The main reasons for the immobilizer blocked the engine launch

The causes of the engine start failure associated with the immobilizer system may be:

• malfunction of the chip of the native key;

• sexing battery element in the key (if the chip has autonomous food, in most cases the performance of the chip does not depend on the battery, as it represents a small autonomous crystal placed in a ceramic case without any conclusions);

• open pump loop or violation electrical connections with her;

• malfunction on the power supply chains of the immobilizer;

• immobilizer communication breakdown with an engine control unit;

• "Flood" firmware of the engine control unit, immobilizer, which can be associated with a powerful electromagnetic pulse;

• malfunction of the power control unit;

• attempt to start the engine "non-rig" key;

• discharge or disabling terminals rechargeable battery, especially when the ignition is on.

Video - What you can try to do if the immobilizer does not see the key to Nissan Almera:

A large number of reasons for which the immobilizer system leads to the failure of the engine start, assumes a strictly defined algorithm (sequence of actions) to identify a specific defective node.

Signs that it is the immobilizer that does not give a car

The main signs of the inoperability of the immobilizer system:

• indication of the blinking LED on the dashboard of the car, which was not in the usual mode when the ignition is turned on;

• glowing key icon on the dashboard or LCD display of the on-board computer;

• the message includes the words "key", "secret", "immobiliser" on the display of the onboard computer;

• blocking the rotation of a good starter.

The immobilizer malfunction manifests itself only at the time of engine start. If the engine ranks during the movement, it cannot be associated with the problems of the immobilizer. After the key to survey the key, the immobilizer "gives good" to start the engine and stops its functions up to the next start.

What to do in such cases

If there is a suspicion of the malfunction of the immobilizer system and the corresponding signs, the most correct. It will definitely give a message about the malfunction of the immobilizer system or blocking the engine control system.

In some models of cars, for example Daewoo Matiz.The faulty immobilizer sometimes does not allow the diagnostics of the engine control unit.

Video - possible reason The fact that the immobilizer does not give the machine:

If there is no possibility to edit the diagnosis, you can apply the following algorithm for the search and troubleshooting algorithm:

1. Check if the chip is lost from the native key. Perhaps the key dropped the baby, then he collected him, the chip rolled somewhere. To do this, disassemble the native key.

2. If the key's insides have an electronic circuit and a chip connected to it, it may be discharged the key element of the key, it is better to replace it with a similar one.

3. If there is an additional key or duplicate, you can try to start the engine with it.

4. In the event that a duplicate is absent, it is necessary to make sure that the chip is good. Its firmware can "fly" randomly. This operation will require special equipment. You can use the services of manufacturers of duplicates of the excluding, this service is inexpensive. The key is placed in the coil field, and the code is read. If the chip is non-working, the code is not indicated, the chip is replaced.

5. The next step is to check the pump loop. To do this, you can use a self-made loop with a LED connected to it. It is placed in the area of \u200b\u200bthe pump loop, located on the ignition castle. If there is a survey signal, the LED will blink.

The loop can be "ringing" using a multimeter, its resistance is usually ranging from 20 to 500 ohms. The loop break or its short circuit leads to the failure of the code reading, the loop must be repaired or change.

6. The next check step is to control the voltages entering the immobilizer unit. Usually there is a minus power bus, plus 12 volts via bus 30 (constantly) and +12 volts via bus 15 (through the ignition lock). The pinout of the immobilizer block may be different, but these voltages must still flow. If they are missing, it is necessary to check all the fuses (if unknown, which are responsible for the supply of power to the immobilizer). As a rule, they are located in the salon block of fuses.

7. The same way is received when checking the voltages by the power control circuits of the engine. It is easier to do this, as finding fuses responsible for his work is easier.

8. Sometimes, if the engine start failures, it helps temporary disabling the battery terminals (no less than 15 minutes).

Special problem solving methods

When replacing the car's engine while repairing simultaneously with the acquisition and motor control unit, it is necessary that the immobilizer and chip needed to be included. In this case, the process of replacing the engine will be simple. A new engine is installed, the control unit is installed, the immobilizer is replaced and reinstalled. new chip From the kit.

This option is possible: a non-free engine control unit is purchased. In this case, the chip and immobilizer can be thrown at all, and forget the problem with the key forever.

If there are microcircuit skills, in some engine control units, it is possible to "pour" a ramless firmware yourself. To do this, the location of the EEPROM memory microcircuit is found on the Internet.

The microcircuit is then dropped from the block, placed on the programmer, it is recorded (poured) a new non-free firmware (IMMO OFF), which can be found on the Internet. The microcircuit is then seen again in the scheme. This operation can only be done by professional electronics on special equipment. If there are no such skills, you should contact the specialists.

Problems with car security technique often make the owner of the auto change plans. After all, if the immobilizer jammed and does not want to disconnect, you can not leave your car in the right direction. You will have to either spend time on try to disable the device, or use other types of transport to perform the tasks at the moment. Disable immobilizer in the car is not always possible without the help of specialists, because this device works to protect your car from the hijacking.

Given that today there are many immobilizers technologies, the disabling device will be quite complicated. We recommend that you have to buy a car to study the features of the immobilizer in your machine, as well as find the location of the button, which forcibly disables this device. Let's deal with modern immobilizers and methods for their forced shutdown.

Types of immobilizers and functioning of various devices

Today almost everyone modern car It has such a system of protection against hijacking as an immobilizer. Even the cheapest equipment of domestic transport include such funds, because the cost of the most simple devices Low enough, and the level of protection of the machine is ensured much higher than from the alarm.

The principle of operation of the immobilizer may be different. For example, in modern expensive devices there is a function that allows a potential robber not only to start a car, but also to drive several tens of meters. Then the car stops, and the thief is forced to leave it, because the immobilizer shutdown will take a lot of time. Features of the device are as follows:

• each immobilizer has its own activation and shutdown system;
• in different devices there are various hijacking technologies;
• the more modern immobilizer, the greater the degree of protection it provides;
• the stop occurs by overlapping fuel lines, interference in the work of the checkpoint or electrical system;
• disable this device is possible only if there is an original key and knowledge about the machine.

Today, most of the most simple immobilizers are built into the ignition castle. If the car is noted directly, bypassing the lock system, the machine will not move from the place, because the electronics will block the flow of gasoline in the engine combustion chambers. More dear devices Work separately from the ignition castle, using other factors for determining theft.

For example, in modern cars with an invincible access to the salon, as well as the engine starts using the button, an immobilizer is present, which completely paralyzes the operation of the machine if there is no charming alarm. The keychain can lie in your bag or in your pocket, it is not necessary to get it, the car itself determines its presence or absence.

Disable immobilizer on your car - Emergency task

If the immobilizer worked at the time of your movement on his car, it probably failed. After all, you are using the original ignition key and are not a hijacker, but the owner of the car. In this case, you need to find a button, about the location of which only the owner of the car should know, press it and continue the movement.

But at the failure of the immobilizer, such a simple solution helps not always. If the button does not work, you will have to turn off the immobilizer directly. We recommend to learn from the operating instructions in advance about its location and connection scheme. Let's just say that without professional skills to disable the device you will not succeed, otherwise it would not provide normal protection. To disable the device, these actions are taken:

• the exclusion of the immobilizer unit from the electric circuit;
• reboot data in the immobilizer unit using a computer and a special cable;
• immobilizer replacement to another obviously working device;
• challenge specialists who will perform overwriting data on the device;
• transport car to the station maintenance For diagnostics.

It must be said that the most popular solution will be exactly the last option, because there are no specialists in every city who can turn off the immobilizer on the road. If you are and finding you will have to prove that you are the owner of the car. Therefore, with an unexpected inclusion of the immobilizer, it is better to immediately take the car on a hundred.

The station will diagnose the problem that has arisen and take certain actions to eliminate it. You will only have to pay the invoice and learn more about the problem. Therefore, in most cases, try independently disable or restart the immobilizer is to waste time in vain. It is better to immediately go to professionals.

Immobilizer and engine pre-launch system

A very popular acquisition for a modern motorist is a remote engine running system that allows you to start the power unit in advance and heat the engine to your arrival. This is an excellent technology that helps save time and get the maximum comfort in the cold season.

But for the normal functioning of this system, it is necessary to make changes to the operation of the immobilizer, because without the presence of an original key, the engine will be blocked by various methods. There are several common ways to solve this problem:

• immobilizer replacement on a different type - for example, one that blocks the operation of the gearbox;
• spare chip key in a car glide - But in this case, the immobilizer will not work in the hijack;
• immobilizer crawling unit for unhindered engine start - is also not too secure;
• reprogramming Immobilizer to start power aggregatebut the inadmissibility of movement.

These features modern Systems protection against hijacking, which often become true problem For the owner of the car. The emobilizer electronic unit is a complex knot of an electric car circuit, which can provide significant troubles for the owner. For example, when breakdown on the track in remoteness from settlements, this unit can become a real trap.

Therefore, we recommend using modern high-quality immobilizers. Even if you have inexpensive domestic car, you can apply reliable immobilizers with excellent technologiesthat will replace the standard device. This will ensure the comfort and safety of the operation of the machine and the protection of its hijacking.

We offer videos in which you describe bypassing a regular system of Immobilizer Toyota Prado:

Let's sum up

To get the maximum reliability of the car operation, it is better to use a modern technological immobilizer. This device will help you guarantee a high degree of maintenance of the machine and protection against theft. However, sometimes the immobilizer becomes a real problem for the owner of the car. Therefore, it is necessary to know the emergency disabling paths of this device in your car.

Read the section in the instructions dedicated to this node of your car. Remember that full information about the functioning of the immobilizer is in your model only in the instruction that was given to you in the cabin along with the car. Have you been a problem with this node in your practice?