Alarm Sherkhan does not respond to the key fob: what to do

When using an alarm system, a situation may arise when there is no feedback from the Sherkhan key fob. This happens for a number of reasons.

1. My battery is almost done. Make sure the problem is with only one remote control. Take out the battery. Check the voltage on the battery with a multimeter (15% less than the nominal value is allowed). Insert a new battery and check the functionality of the key fob.
2. Poor external conditions. There may be interference that is jamming the connection. Move the car to another location.
3. Damage to the transmitter cable or poor contact. In most cases, a cable break occurs at bend points, or at the terminal block. Test each wire in the loop with a multimeter. Solder the broken wire, or replace the entire cable.
4. Transmitter malfunction. In this case, knowledge of electronics is required. It can be difficult for an ordinary driver to understand this problem. It's better to contact a service center.

See how to set up the Sherkhan Logicar 6 key fob.

De-synchronization of "Sherkhan" alarm key fobs

The Magic Code protocol is inherently a classic one-way: in it, a communication session consists of a code message sent from the key fob to the alarm, and in the case of a command execution, a return message with status information sent from the alarm to the key fob. That is, there are no methods for unconditionally confirming the authenticity of the key fob, as is done, for example, in the dialog code.

Such communication methods are extremely vulnerable to code grabbers - having the opportunity to open the encryption key used to connect the key fob with the alarm system, you can at any time generate new code messages with commands that will be absolutely correct from the alarm point of view. To increase cryptographic strength, synchronization of the key fob and alarm was introduced in the Magic Code protocol: a command that was correctly encrypted, but with an incorrect synchronization tag, was not recognized as “legitimate”, and the alarm did not respond to it.

The disadvantage of such a solution is obvious: the protocol initially included a “bottleneck” in the form of the possibility of desynchronization of the key fob and the alarm itself. It is not for nothing that the instructions for alarms without a dialogue code include instructions not to press buttons outside the communication radius, which accelerates the probable loss of synchronization. However, for the Sherkhans of the Logicar family, it has become a common problem even in conditions where there are no objective prerequisites for loss of synchronization.

How can you get inside if the defense doesn’t respond?

With all the electronic components of the alarm system in full working order, this is quite simple to do. Depending on the car alarm model and its functionality, only a key fob and, in some cases, an individual driver tag are enough. In advanced alarm systems, one tag is enough. The alarm itself recognizes its owner and performs the entire range of programmed actions.

In other words, the primary link that uses all the electronic wisdom of a car alarm is the control, coded signal of a key fob or tag. For satellite alarms, this signal can also come from the mobile device of the car alarm owner. And only in exceptional cases, the secret “Valet” button will help you disarm the car yourself, if there are no other options. True, just get into it, and not use it.

Starting the engine from the Scher-Khan alarm key fob

Starting a car engine using a remote control is very useful. Allows you to warm up your car in the cold season without leaving home. And also remotely turn off the engine if you are delayed somewhere, preventing it from overheating. How to start a car using the Sherkhan key fob? There is nothing complicated about this. To quickly and correctly set the autostart time, carefully read the operating instructions, which describe all the functions of the anti-theft system.

Let's sum it up

Taking into account the above information, it becomes clear that the main reasons for alarm failure can be associated with both breakdowns and software failures. The system may also not work stably if there are power problems, the battery is in a faulty condition, etc.

We will also add that if the alarm system is new (under warranty) and/or additional elements have recently been installed in the car, it is better to refuse to attempt repairs yourself. In this case, you must immediately file a claim with the center where the security or anti-theft system or other equipment was installed.

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The operating principle of the car engine autostart system, features, advantages. The main disadvantages of autostart during operation are the risk of car theft.

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Installing an automatic engine start on cars with a manual and automatic transmission: what you need to know. How to use autostart on manual and automatic transmissions. Recommendations.

Remote engine start unit: basic functions. Safety of using the internal combustion engine autostart module, interaction with car alarms and immo.

Symptoms and diagnostics

Before you begin to independently repair the security system, you must correctly identify the cause of the malfunction. Thanks to this, it will be possible to find a way out of the current situation and quickly resolve the problem.

In most cases, vehicle owners choose the Magicar Scher-Khan 5, 6, 7, 8 alarm system. These device models may experience problems with pressing individual keys. The main sign of such a failure will be the lack of response of the security system to the actions of the car owner. In some situations, the remote control may refuse to work at all. A similar thing happens if the Logicar alarm does not respond to button presses.

Diagnostic procedure:

1. The first step is to conduct a visual inspection of the device and identify defects.
2. Then they check the operation of the remote control under various settings.
3. Similar actions are carried out for the additional key fob, which is included in the equipment package.
4. If the second control panel does not work, then disassemble it.
5. After removing the housing, check the integrity of all parts and the strength of the connections.
6. Remove accumulated dirt and dust from the inside of the key fob.
7. If there are no positive changes, check the functionality of the security system.

Is it possible to restore the key fob?

Below we will look at what to do if the alarm key fob breaks.

Keychain repair

You can try to repair the control panel by checking the condition of the internal elements. To do this, you need to open the case, which is connected with screws and latches. You need to be careful when opening the device, as the latches break easily. The printed circuit boards inside should be free of plaque, dirt and oxidized areas. If the board is severely damaged, then a rational solution would be to replace the remote control with a new one.

To independently check the integrity of the alarm key fob elements, the user must have good knowledge of electrical engineering.

The check looks like this:

1. Clean the surface of the board with a stiff brush. Using detergents on your own is not advisable because it can damage the elements (capacitors).
2. Check the integrity of the circuits with a multimeter, first of all, the power circuits and elements with a different color from the rest.
3. Ring the circuits of the buttons and the control diode, if it is included in the remote control design.
4. If a break is detected, solder the damaged track or replace the damaged element. Electronic components can only be replaced using special soldering equipment, which is available at service centers.

Below are photographs of the soldering of the tracks of the Pandora key fob. The owner had complaints about the range and slow response of the system to button presses, but after repair the defects disappeared.

If the buttons on Starline and other models fail, you can try to repair the device yourself.

The step-by-step instructions are as follows:

1. Open the battery compartment and remove the battery.
2. Unscrew the fastening screw located under the battery.
3. Using a knife or thin screwdriver, separate the halves of the housing. The back part must be removed.
4. Remove the printed circuit board and inspect the buttons. Place the torn one aside.
5. Place the board with the display down and carefully glue the torn button back to its original location using cyanoacrylic glue. The key is glued to the standard plastic legs; the contact parts must be clean.
6. Solder the four contacts of the button with a low-power soldering iron. If necessary, additionally solder the pins of all buttons.
7. Place the board in the upper part of the case, snap the lower part into place and tighten the fastening screw.

When struck, elements on the boards may bounce off, but you can install them in place yourself. Often, after a fall, damage to the inductor occurs.

Sequence of repair actions:

1. Remove the battery compartment cover and remove it from the remote control.
2. Unscrew the screw securing the halves and separate the housing.
3. Remove the electronic boards and analyze them for torn elements.
4. Solder the parts into place and secure them with hot glue. It is recommended to replace torn elements with new ones, since tearing off damages the conductive parts.
5. Reassemble the product.

If the remote control has stopped responding to button presses or has lost connection with the main unit, then you can try setting it up. In the design of old-style alarm remote control panels (pre-2005-2007), there is often a trimmer capacitor that you can try to adjust.

To do this you need:

1. Enter programming mode (in accordance with the instructions for this alarm).
2. Check the operation of the button. If there is no signal, then you need to turn the capacitor regulator a few degrees (up to 5).
3. Perform settings. If the system does not respond to the key fob, turn the knob again. It is recommended to try adjusting the capacity several times.

If setting up the key fob does not help, then the owner has no choice but to buy a new remote control or make a copy of the existing one.

Where can I make a duplicate?

If the main or auxiliary key fob is lost, you can try to find and select a control panel from a similar alarm model. You should not rely on your own knowledge when using this device; it is better to seek the help of a specialist.

Key fobs are sold by specialized stores of automobile security systems and installation centers. You can try to order devices for a number of alarm systems (Starline, Pandora) through official representative offices or the manufacturer’s website.

No response to Sherkhan Logicar remote control

The Scher-Khan Logicar line includes models such as A, B, 1, 2, 3 i, 4 i, 5 i, 6 i, 5iS, 6iS. It often happens that the alarm system malfunctions: the car does not close or open; there is no feedback on the key fob. There are several reasons for this:

• The remote control has become untied. Re-register the pager in the system memory according to the attached instructions;
• The battery has run out. Replace the battery and check the operation of the key fob;
• influence of external interference. Park the car in a different place;
• damage to the integrity of the loop. Check the cable with a multimeter. If possible, repair or replace it with a new one;
• transmitter failure. Contact the installation center.

Reasons for failure of the key fob

If the device does not go off when you press the button on the alarm remote control, the reason should be sought not only in the key fob itself, but also in the anti-theft system. If the alarm does not respond to the key fob and the car does not open, this may be due to several types of faults.

Problems with the key fob

When the anti-theft installation refuses to see, respond and react to pressing buttons from the key fob, first of all it is necessary to diagnose the remote control itself. It is quite possible that the car alarm does not see the key fob due to a dead battery. If the remote control is equipped with a screen, check whether it responds to key presses; if there is no display, then there should be an indicator light that also lights up when a key is pressed or when the batteries are low.

Problems that are easy to fix

The most common reason why the feedback does not work is a dead battery in the key fob. In this case it is necessary:

• Make sure that there are problems with only one key fob. To do this, use a second key fob, for example an optional one, to check the functionality of the car alarm.
• Remove the battery.
• If you have a multimeter, check the voltage. For example, in Sherkhan Magikar 7, an AAA battery with a nominal voltage of 1.5 V is installed in the main key fob. In the optional key fob, Sherkhan 7 has two CR2025 batteries with a total voltage of 6 V. A voltage of 15% lower than the nominal value is allowed.
• Replace the battery and check operation.

Since control signals are transmitted over a radio channel, there may be interference that can jam communications. In this case, you need to stop parking the car in a place where there is radio interference.

You should also show increased attentiveness to the safety of the iron horse. The presence of radio interference indicates that the key fob signals may be read by intruders.

If there is no reaction from the defense

Just as an unloaded gun hanging on the wall shoots, a seemingly serviceable key fob refuses to disarm the car. In other words, the perplexed driver will have to find out for himself the reason for the absence of a coded signal or the reluctance of other car alarm components to respond to it. Sometimes it is not difficult to fix this malfunction with your own hands, but sometimes repair is simply impossible. What to do if the alarm does not recognize the key fob:

• A simple DIY repair will involve simply changing the battery inside. It’s not difficult to understand what to do;
• The main thing here is to choose the right battery or “pill” with the current expiration date;
• do not confuse the declared polarity during such repairs;
• if there is no new battery in the foreseeable vicinity, you can try to revive the old one yourself by slightly deforming it;
• The functionality of the key fob in this case can be checked by the glow of its LED and how the car alarm itself reacts to the key fob;
• if the previous key fob repair option did not give positive results, then you can use an auxiliary key fob without a display;
• if the alarm system begins to respond normally to the key fob signal, then you can repair the main key fob yourself at home in a calm environment;
• After opening it for repair, you should very carefully inspect all the switching wiring. And especially in the area of ​​the battery;
• If the repair results are negative, you will have to purchase a new key fob yourself. There have been no problems with their purchase for a long time;
• Repairs of similar complexity will involve the ability to eliminate harmful interference. It’s hard to even imagine how many there could be. Especially if there is an industrial facility, shopping or exhibition center nearby;
• It is unlikely that you will be able to simply roll the car to the side - the car alarm will go off with all the ensuing consequences;
• but it would be quite reasonable to use the “Valet” function of the car alarm. To the extent that you can carry out the necessary repairs at the nearest alarm service center.

Important: the presence of spare batteries, as well as an additional key fob, will greatly simplify the life of the car owner in the above repair cases.

Problem with feedback key fob [SCHER-KHAN MAGICAR 7]

Previously, the alarm worked fine, but then the remote control with feedback stopped working, well, it stopped working in some way that it locks and opens the car, but there is no remote control on the display that shows the lock that the car is closed or open and the antenna shows that there is no network, it blinks stupidly when the car If you kick, the alarm goes off, but there is no remote control on the display, that is, it doesn’t vibrate, it doesn’t beep, or anything. The remote control just opens and closes the car and that's it. What to do? what could it be? If I change the key fob, will it work as it should? Or is it all about the block itself?

• I would try to reboot the whitefish and re-save the key fob into memory.

  I'll tell you a story about the little engine that could ©

• how can I reset it into memory?

• Message from
  impulse_exe

  how can I reset it into memory?

  try reading here https://autoelectric.ru/autoalarm/sch...agicar5-ug.htm

  I'll tell you a story about the little engine that could ©

• Message from
  SateMAN

  I have 7, and I didn’t find even in the book, there is a search for predelka but it didn’t help, it says that there is no network and that’s it (((

• Message from
  impulse_exe

  I have 7, and I didn’t find even in the book, there is a search for predelka but it didn’t help, it says that there is no network and that’s it (((

  I know that 7, they are almost the same, it seems..

  I'll tell you a story about the little engine that could ©

• ENERGY SAVING MODE “BATTERY SAVE SEA”
  The “Battery Save Mode” mode is used to reduce the energy consumption of the key fob communicator. In this mode, the key fob has a shorter range and provides feedback to the system only when arming and disarming with this key fob. The vibration alert function does not work in Battery Save Mode. The key fob communicator automatically switches to the “Battery Save Mode” mode when the battery discharge level is critical. Forced activation and deactivation of the “Battery Save Mode” mode is possible in the mode of programming the functions of the key fob communicator (see “Settings of the key fob communicator” on page 14). The activation of the mode is indicated by the blinking of the symbol on the key fob display.

  https://www.autosecurity.ru/security/…agicar_7_2.php

  Read also:  Replacing the timing belt on a 16-valve Lada Kalina on your own

  I googled it the first time, were you really too lazy?

  I'll tell you a story about the little engine that could ©

• Just change the battery, yupty!

  I'll tell you a story about the little engine that could ©

• Message from
  SateMAN

  Just change the battery, yupty!

  Thank you

  I'll try now