Having a car is not only happiness and responsibility, but also periodic surprises. Among them, one often encounters this: we press the button on the alarm key fob, but there is no response in response. In most cases, this happens unexpectedly and at the most inopportune moment, when you are rushing to a meeting or leaving the store loaded with bags. The original car greets you with an impregnable fortress: the alarm does not turn off and the central lock does not open. Why does this happen and what to do? Sometimes the solution can be very simple.
The problem is in the key fob
If the alarm does not respond to the key fob, then it is logical to suspect it of the trouble that has arisen. This fragile miniature thing seems much more vulnerable than the control unit installed in the car. This postulate is confirmed by practice. The alarm key fob fails for the following reasons:
1. The battery is dead . No matter how trivial it may sound, most car enthusiasts forget that the key fob runs on a battery and it needs to be changed periodically. Typically, the battery discharges gradually. This is expressed in a reduction in its range of action, but in the everyday bustle you may not notice this and get an unpleasant surprise.
First aid: Remove the battery and tap it on a hard surface, then return it to its place. Sometimes this helps activate the remaining resource, which is enough to disarm the car from the alarm system.
Solution: It is recommended to disassemble the key fob at your leisure, familiarize yourself with the type of battery used, purchase it and keep it in your glove compartment, wallet or somewhere handy. Then, at the right time, it will be enough to replace the battery to restore the operation of the control panel.
You can be proactive. It is mandatory to replace the battery every 6-9 months. If there is a screen or LED that reflects the battery charge status, then it is enough to monitor the status and promptly replace the discharged battery.
2. The electrolyte has spread . This problem occurs when using low-quality batteries. It happens suddenly. In some cases, the keychain cannot be brought back to life, but it’s worth a try.
Solution: The key fob is disassembled, washed and dried, and treated with alcohol. Do not use aggressive substances such as acetone. They will definitely lead to the fact that you will have to say goodbye to your electronic device.
3. Liquid ingress . A key fob that falls into an autumn-winter puddle may become damaged. If simple water is not harmful to the control panel, then salt and chemical reagents can paralyze its operation.
Solution: If a questionable liquid gets in, the key fob must be disassembled and cleaned with alcohol. A soft, thin brush will make the cleaning process easier, and a regular hairdryer will speed up drying. If the control panel is not simple, but, for example, with a screen, then it is better to contact specialists. All that you can do on your own in this case is to remove the battery to avoid worsening the situation.
4. Transmitter failure . Each remote control contains a transmitter. It can be broken by frequent or even continuous key presses. This happens if the device falls into the hands of children or is unsuccessfully placed in a pocket.
Solution: The remote control will have to be taken to the workshop or replaced with a new one.
Problem in the control unit
If the car alarm does not respond to button presses, then the key fob is not always to blame. Malfunctions also occur in the head unit. These include:
1. Antenna failure . Usually the head unit is located under the steering wheel, and the antenna is a small wire. If it is not secured in any special way, then under certain conditions it may break off. It is also possible that it could be accidentally damaged by a car service specialist due to the latter’s lack of experience.
Solution: Without an antenna, the alarm is deprived of the possibility of remote control or its radius is significantly reduced. The damaged antenna must be replaced.
2. Damage to the control unit . The operating resource of the alarm head unit is limited. Working around the clock and year-round, the control unit one day fails. This happens approximately once every 5-7 years, but the numbers differ for different models. Such a breakdown is foreshadowed by non-standard operation of the security system. The car alarm begins to behave unstable: it turns on suddenly, does not always respond to commands, or responds with an error.
Solution: When using a car for a long time, you need to be prepared for the fact that sooner or later the alarm system will have to be updated.
In some cases, it makes sense to abandon the alarm system altogether, since dismantling the old security system and installing a new one will require costs, and a car with high mileage is unlikely to be of interest to car thieves.
The problem is the interaction between the key fob and the control unit
Sometimes the key fob “gets untied” from the car alarm, that is, the control panel loses contact with the power supply, and their interaction becomes impossible. In this case, the external lights on the key fob may continue to light as if nothing had happened, but pressing the buttons does nothing. This may happen for the following reasons:
1. Replacing the battery . When working with electronic systems, removing the battery has unpredictable consequences. Among them is a malfunction of the alarm system. Also, a dead battery disrupts the normal functioning of the security system.
2. Software failure . It can occur for no apparent reason. It is enough to get into the zone of electromagnetic interference. Typically, such areas are located on the territory of airports, government enterprises, near cell towers, etc. To check how radio waves work, just use your mobile phone, paying attention to the GPS function.
3. Error when reprogramming the device . If you or a service technician recently reprogrammed the control unit, then this may be the reason for the failure of the car alarm.
4. Hacking attempt . The use of stun guns and other special devices leads to disruption of communication between the key fob and the control unit.
Ambulance: The easiest thing is to get a second control panel, if available, and try to get into the car with it. If there is no spare remote control, then bring the key fob as close as possible to the signal receiving device. This will help reduce the negative impact of radio interference.
Solution: You will need to re-program the key fob, “tying” it to the car. You can do this yourself by taking information from the Internet or from the instructions for the alarm. To do this, you need to know the car alarm model.
If pressing the buttons on the key fob does not cause a response, do not rush to panic. In extreme cases, you will have to open the car with the key, briefly feeling like a burglar. The problem can probably be solved using one of the above methods. A spare control panel, a spare battery, reducing the signal reception radius, etc. can help. The need to replace the entire alarm system rarely arises, so there is a high probability that you will not have to resort to this emergency measure.
If your alarm does not respond to the key fob, sequence of actions
You can sympathize with the owner of a car whose alarm does not respond to the key fob. But just sympathize, since this is just a minor malfunction for most drivers. For those who have been on friendly terms with their car for a long time and know what to do in this case. Who knows for certain not only the location of the fuel filler neck, but also the secret location of the “Valet” button and the installed car alarm. Naturally, like any malfunction, it does not add joyful notes to his feelings.
- Electronic protection device
- How can you get inside if the defense doesn’t respond?
- If there is no reaction from the defense
- Lifesaver in case of emergency
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_exehow 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
SateMANI 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_exeI 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
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
SateMANJust change the battery, yupty!
Thank you
I'll try now
