Let's start with the fact that during operation of many cars, drivers note that when starting the engine, a radio failure occurs, the head unit turns off for a few seconds, followed by automatic switching on and so on. Note that this often happens with non-standard car radios, that is, when the head unit in a car is from a third-party manufacturer.
In this case, this situation in the vast majority of cases is not a malfunction, but the possibility of malfunctions should not be completely excluded. In this article we will talk about why, when starting the engine, the radio turns off and the dashboard lights dim.
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When you start the engine, the radio turns off: reasons
So, the owner gets into the car, turns on the instrument lights and radio, and then turns the key in the ignition. , while the backlight of the devices dims to a greater or lesser extent, and the control unit turns off and restarts until the device itself starts working.
As a rule, this happens if the engine is not yet warmed up. If you repeat launches in the future, but this time “hot” or after a slight preliminary warm-up of the engine, the radio will no longer turn off.
It is important to understand that when the power unit starts, the starter is engaged. This device is actually an electric motor that takes energy from it to turn it. At the same time, the starter is a powerful energy consumer. To put it simply, during operation of the starter, there is a sharp and quite strong decrease in voltage in the vehicle’s on-board network.
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Why does the radio turn off when I start the engine? This question worries many drivers. This problem causes inconvenience during the operation of the car radio. As a rule, it occurs with non-standard devices. And this is not surprising. After all, the head unit in a car differs by manufacturer.
Turning off the radio when starting the car engine is not a malfunction of the equipment. This problem can be fixed quickly and easily, either independently or by specialists. The problem is accompanied by the fact that the dashboard light loses its brightness and becomes dim. By identifying the causes of the failure, you can restore the high-quality operation of the equipment.
Operating principle of the device
The radio has long become an integral part of any car. The UAZ Patriot, VAZ 2110, VAZ 2107, VAZ 2114 models were no exception. The principle of its operation is almost the same for them. As soon as the driver gets into the car, he turns on the instruments and multimedia system. Then he inserts the key into the ignition and turns it. This causes the starter to provoke engine operation and the following picture occurs: the instrument lighting becomes dim for a few seconds, and the head unit stops functioning. This phenomenon stops as soon as the internal combustion engine starts working.
Car radio The reason for this operation is that the engine has not yet warmed up. Once it is resolved, restarting it will not lead to similar problems. If the engine is preheated, the radio will not turn off. Since this process involves a starter, which is shown in the photo below. It consumes a large amount of energy, which leads to a sharp decrease in voltage in the on-board system vehicle UAZ Patriot, VAZ 2110, VAZ 2107, VAZ 2114.
The protective function of the radio is the main cause of the problem
Starting the engine is the driver’s main goal. Therefore, support for other elements fades into the background. As a result, all the energy is directed to provoke the functioning of the starter. The radio has no choice but to automatically turn off. This ability can be considered one of its advantages. Since at low voltage the device will begin to function incorrectly. To prevent this, the system switches itself off. Her defense mechanism kicks in.
As soon as the UAZ Patriot, VAZ 2110, VAZ 2107, VAZ 2114 car has driven several kilometers and needs to be started again, the radio does not turn off. Since the device receives the required amount of voltage. The manufacturer of the radio tape recorders took this point into account and set a threshold that is decisive for the activation of the protective function. It is also worth considering the condition of the battery and the battery charge level. This is especially important in the winter season.
Other causes of the problem
If the radio turns off when starting the VAZ 2110 engine, then do not be upset. This situation is not a sign of equipment malfunction. It is completely understandable and normal. Knowledge of the operating principles of the car radio and its communication with the vehicle will help you verify this. Therefore, you should not rush and throw the equipment into the trash bin or try to repair it.
First you need to determine the condition of the battery. Its energy should be enough to complete various tasks in a short period of time when the internal combustion engine is running. Otherwise, you will need to understand the battery problems. The following happens:
- energy leakage;
- does not charge well from the generator;
- charge does not accumulate.
Generator problem
Each of these reasons has its own logical explanation. If we talk about the fact that the battery is poorly charged from the generator, then the relay regulator is to blame. If it does not work correctly, it is quite logical that the device will not receive enough energy. As a result, there is a voltage dip when starting the engine.
IN in this case Do not forget that the generator itself can lead to similar troubles. This happens mainly when some of its elements malfunction. This situation is typical for new batteries. At first the problem is less pronounced, but over time it becomes more obvious.
The problem is in the starter
If the radio turns off when starting the engine of a VAZ 2110, VAZ 2107, VAZ 2114, then the reason may be in the starter. Over time, this part may fail. It starts to jam and makes knocks, clicks and other unpleasant sounds when working. This is a sign that the part is not working properly. It's hard for her to spin and turn the motor.
All this will lead to the fact that the starter needs more energy to operate, which it takes from the battery. Thus, voltage sag occurs regularly. As soon as an attempt is made to start the power unit, the radio will automatically restart. To fix the problem, you need to check the starter for serviceability. If problems are identified, fix them.
The problem is the leak
If the generator and starter are checked for serviceability, but the problem remains, then the cause is a leak. The radio turns off when starting the engine of a VAZ 2110, VAZ 2107, VAZ 2114, since another device causes the battery to discharge. To find out the exact cause of this problem, you need the help of a specialist. He gets the job done quickly.
The likelihood that the radio is not connected correctly is small, but it exists. Therefore, it should not be written off. It is necessary to check and this moment. It is also necessary to make sure that the radio is operational. Since it can become the main cause of the problem. It is important to note that this happens quite rarely.
If the radio turns off when starting the engine on a cold start, then there is no need to worry. This is quite normal. But the constant shutdown requires the driver’s attention. Since this is a clear sign of failure of some mechanisms or parts in the vehicle.
Motorists may have repeatedly noticed that during the process of starting the engine, or rather turning on the starter, the car radio turns off. The device goes silent for just a few seconds and then turns on. Most often, this situation can be observed with non-standard devices. Let's find out what to do when the radio turns off when you start the engine.
Operating principle of radio tape recorders
Car radios have long been an integral part of any car. Even such options as the UAZ Patriot and VAZ 2110-2114 are no exception. The operating principle of any car radio is almost the same and does not depend on the model. When the driver gets into his car and turns on the ignition, all systems are automatically started, including multimedia. Next, the starter is engaged to start the engine. At the same time, the instrument lighting dims, and the radio turns off when the engine starts. When the engine starts, the multimedia system starts working normally again.
It is believed that one of the reasons for this behavior of the radio is that the engine is still cold after starting. As soon as the engine warms up, the radio will not turn off when restarted. The starter is involved in the process of starting the car. He is a consumer large quantities electrical energy - at the moment of starting a cold engine, the voltage in the car’s on-board network drops significantly and the radio is simply not enough.
Radio protection system
For the driver, the main goal is to start the engines. Support for any other devices is relegated to the background. All the energy available in the battery is used to operate the starter. The radio does not have enough power and turns off. Many car enthusiasts are very nervous about this, but this is not a minus, but a plus. If the radio turns off when you start the engine, then the voltage is low, and the device, especially of Chinese origin, may not work correctly. To prevent serious failures in the circuitry or software, the system automatically turns off - this is how protective mechanisms work.
When the car has already driven a certain distance and the engine has been turned off, when you try to start it again, the radio will not turn off. The amount of energy increased due to the battery being recharged by the generator.
Manufacturers also took these points into account: most radio tape recorders have a so-called threshold for triggering protective functions. Condition must be taken into account battery.
Connecting the radio
One of the reasons why the radio turns off when the engine starts may be the connection, or rather the diagram of how to do it correctly.
If you connect a multimedia device in series according to the circuit proposed by the manufacturer, then when you start the engine and turn the key from On to Start at the ignition switch, a power interruption occurs.
Decide this problem This is possible if you power the multimedia device directly from the battery. However, there are disadvantages to this connection: the radio will drain the battery. On a cold winter night, the radio can be enough to completely drain the battery.
Current leaks in the on-board network
If the radio turns off when starting the car, then the problem may lie in so-called current leaks. That is, when the ignition is turned off, there are consumers that discharge the battery. Overnight, due to these leaks, the battery can completely die. In order to solve the problem, you need to detect the leak and find its culprit. It can also be a radio, alarm, central locking and other systems.
Wires
This is another reason if the radio turns off when you start the engine. It could be all about the wires. Radio tape recorders are often connected with thin, low-quality wires. They have insufficient characteristics and multimedia is unstable.
A solution to the problem may be to replace the power cables of the radio with copper analogues with a cross-section of 2.5 mm. This allows you to completely forget about rebooting and turning off the radio. Also, the music does not turn off when the volume is increased. This method can be used to prevent the radio from turning off when starting, but it will only work normally with a relatively new battery.
Starter
Sometimes the battery may have nothing to do with it, and the problem may be hidden in the starter. During the operation of the latter, its parts are subject to wear. If the starter bushings are worn out, the shaft may get stuck in them and more energy must be spent to turn it. Hence the shutdown of most electrical consumers.
To correct this malfunction, an inspection of the starter is necessary. It is necessary to check the brushes, commutator, replace worn bushings, and lubricate the mechanisms. After such a revision, the starter will work like new, which means it will need less voltage.
Refinement of the radio
Car enthusiasts modify their radios themselves if they did not take this moment into account. To solve the problem, you will need 2 elements - a 22,000 microfarad capacitor with a voltage of 25 V, as well as a 10 A diode (the diode must be selected based on the fuse ratings in the radio). In this circuit, the diode will serve as a valve - it will not allow the capacitor to power the on-board system of the car, but will only power the radio.
The scheme is simple. A capacitor is soldered between the power wires of the radio. A diode is soldered onto the positive wire with the positive contact to the “+” of the capacitor.
How it works?
So. When the driver starts the car, the starter takes on most of the voltage, so the radio turns off when the engine starts. To prevent the multimedia system from turning off, a diode and a capacitor are used.
The main supply voltage to the radio goes through the diode and charges the capacitor. When the ignition is turned on, voltage will flow through the diode and charge an additional capacitor. When the starter is operating, the voltage in the on-board network sags. The diodes do not allow the voltage in the capacitor to go into the network - all the charge will go to the radio, so that the radio does not turn off when the engine starts. To operate the latter for 5 seconds, a capacitor with a capacity of 470 uf is sufficient.
Other solutions to the problem
Experienced car enthusiasts recommend other options. You can purchase a higher-capacity battery, and then you can forget about this malfunction forever. You can also purchase cheaper multimedia systems - they are less demanding on quality and voltage stability. If the radio with rectifier turns off after starting the engine, then it may be worth checking the wiring for possible mistakes.
Conclusion
With the help of these tips, many car enthusiasts have overcome this problem. A capacitor and a diode help many people. If the capacitor and diode did not help, then you need to check the wiring, starter, generator operation and change the battery.
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Sometimes the radio turns off when the engine starts. There are several ways to deal with this problem and make listening to music in the car more stable.
Why does it turn off?
When the voltage in the on-board network when starting the engine drops below the set limit, the car radio turns off.
When starting the engine, the front panel of the receiver goes out for a while, and after turning off the starter and starting the engine, it lights up again and the operation of the device resumes. There are several reasons why the car radio turns off when you start the engine.
Protective function of the radio
This mechanism is built into some car players. Protection is applied to prevent disruption of the functionality of the device. The fact is that strong voltage surges when working on high volume can lead to settings failure or failure of the radio due to burnout of microcircuits. Thanks to the protection, the head unit does not turn off when the engine is started, but only reboots. All settings set by the user remain the same.
The car radio's protection function will work if the battery voltage drops when starting the engine due to insufficient charge or freezing temperature.
Insufficient battery capacity that does not correspond to the parameters of the vehicle also leads to the radio turning off.
Constant shutdown of the head unit occurs due to problems in the ignition switch if the power connection is made through it. This phenomenon is caused by the occurrence of a strong voltage drop across worn or dirty contacts.
Generator problem
Another reason why the radio turns off when you start the engine is a malfunction of the generator. Problems may occur in the voltage regulator, capacitor and rectifier bridge. Due to these malfunctions, the charge from the generator received when starting the engine may be absent or insufficient to maintain the voltage required to operate the radio.
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The source of the problem may also be a breakdown diode bridge or stator.
Because of this, a faulty alternator will put a lot of stress on the battery.
Problems will be indicated by the absence of a light on the low battery indicator in the instrument panel when you turn the ignition key, or by the same indicator lighting up while the engine is running.
The problem is in the starter
Another typical reason why the car radio and other lights go out when starting the engine is a malfunction of the starter. It is the most powerful energy consumer in the car.
If a malfunction occurs in it, the car radio will constantly turn off. The device may also reset if the voltage drop is excessive due to problems with the starter.
The problem is the leak
Current leakage can occur in different parts of the wiring due to damaged insulation or contamination of the battery case.
Because of this, the voltage in the on-board network, when the engine starts, drops more than during operation, which also leads to the car radio turning off when you start the car.
How to prevent the radio from turning off
The generator and starter need to be checked. A short circuit in the windings is determined by their darkening or heating of faulty parts and components. Leaks in the battery case can be detected using a tester. To do this, touch one of the battery terminals with one probe of the device, and touch different points of the case with the other. A deviation of the arrow will indicate the presence of a leak. To eliminate it, you should wipe the car battery case. The tester will also help you more accurately check the starter, generator and wiring for short circuits or leaks. Faulty parts and assemblies must be replaced.
Answer: When you start the engine, the radio turns offIf you have a higher technical education and work with electronics, let’s discuss?
Yes, interference can come from nearby wires, even from their vibration, if there is one broken wire, have you heard of contact bounce?
What, the capacitor there smoothes out voltage ripples (do you even know what capacitor capacity is or are they only divided into large and small for you, likened... to a finger), and does not increase its static values, I have seen starting capacitors on army trucks, here This one will be able to turn the starter, grab it, and I’ll grab the one in the ecu, just make a will first. If a powerful Conder slams into the ecu, this little guy at the entrance won’t even have time to fart before dying. They lit one weirdo (installed a capacitor) and it’s always fine, now we’re off to the showdown. Although he doesn’t have a clue what’s burned in his brain.
Or do you seriously think that a welding wire needs to be connected to the magnet for power? Do you think it will help with a drawdown or a dead account?
This is ALL COLLECTIVE FARM, Kroilovo leads to Popadalov... I have used quite a few cars to rip out this collective farm wiring using twists and snot from electrical tape with capacitors and other burnt crap. The set of words is the same, only the name and number of enumerated generations of his relatives change. You open it up... eprst... in short, as long as you guys are there, I won’t be left without work, and I’m not afraid of a crisis.
There is no time to enter into a debate with you, there is a lot of work... so no offense, facts are a stubborn thing, I don’t pretend to be the ultimate truth, but I believe my eyes more than your word of nonsense.
I respect your opinion, I just don’t agree with it, so please call me if I went too far...Click to expand...
You shouldn’t consider everyone to be idiots with collective farm hands, this is disrespectful, I didn’t write that I would put wires from welding and capacitors from army trucks on the magician, the capacitor has the voltage on it that was charged with it (my car has a voltage of 12 volts) so that gripping it is no more dangerous than gripping the steering wheel...
I’m not involved in the collective farm, everything is installed beautifully and correctly, I don’t see anything wrong with the additional power source.
Many people have come to terms with the fact that the music “goes out” when starting the engine, but I didn’t like it (and I think the radio didn’t either)
I found a good place for the additional battery, it stood up like a native, you can also connect an alarm to it, and this is already an extra barrier for car thieves... the price of the issue is 500 rubles, but there are a lot of benefits, I don’t even understand what we’re talking about.
And yet, many people here are looking for options for replacing the standard head (radio), and I searched, now everything is installed (the head, the power adapter of the standard tuner amplifier, the amplifier. Everything is set to 18 thousand rubles) and works great. And all this without replacing the standard subbuffer and speakers
I’m driving and fooling around, if anyone is interested I can post photos