The car radio turns on and turns off immediately

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How to determine why the radio turns off and fix the problem

When listening to the radio in a car, especially with a fairly powerful audio system with good subwoofers and tweets, many devices experience malfunctions. Most often, car enthusiasts ask the question, why does the radio turn off when the volume is increased? Indeed, turning off the device when the volume is increased, especially when transmitting power to the bass, in a car audio system often turns off the radio.

What is the problem?

In this case, the device turns on again on its own without any problems, but operates at a lower volume. When I try to increase the volume, the situation repeats. Often, after turning off the radio, the user has to turn it on himself, which is very inconvenient.

Another situation that forces drivers to ask why the car radio turns off without warning is when the engine starts. Depending on the model and brand of the radio and the car, the shutdown can be short-term (when you start the engine, the device turns off for a couple of seconds and then plays again), or permanent, when you have to turn on the radio and adjust the sound again.

In more complex cases, after turning off the radio, the equalizer settings and other operating parameters of the device are reset, after which you have to re-configure the radio's operating parameters after turning it on. This causes a lot of inconvenience for drivers, and in order to find out why the radio turns on and off, you often have to remove the device from the socket and look for the root of the problem in the connection.

Let's look at the most common reasons for the radio turning off spontaneously and ways to solve the problem. They may consist of malfunctions of the audio system itself, as well as problems with the redistribution of voltage between all audio system devices in the car.

A defect in the radio itself or an acquired malfunction

Factory defects in car radios are not such a rare occurrence. During the production of the radio, various defects could have occurred inside the device's microcircuits, which lead to short circuits and other operational problems. To understand why the radio turns off when you turn up the volume, you will have to remove it from the car and take it to a car service center or service center so that specialists can diagnose the audio system.

Malfunctions when connecting speakers to the radio

Incorrect connection of speaker wires to the radio connectors can also cause spontaneous shutdowns of the device. Especially when you start a car engine with a short-term increase in power, a short circuit occurs in the wires with an incomplete connection (input to the plug). To eliminate this malfunction, you need to visually check the contact level and, if necessary, insert the speaker plugs into the radio connectors more tightly.

You can also check the integrity of the wires leading to the speakers: turn on the radio at normal volume and disconnect the speakers one by one, increasing the volume. If the radio does not turn off when you increase the volume, then you can understand that the malfunction lies there. Replacing the speaker wire or contacting technical service helps.

Surge protection in the radio itself

This is the most common reason why the radio turns off when the volume is turned up. Many drivers, when contacting a car service center, hear from specialists that the radio is equipped with overvoltage protection, which is triggered when the power increases. Adding sound to the radio leads to an increase in power consumption from the battery, which can lead to automatic muting. It is impossible to bypass this protection, because... otherwise, the radio may burn out completely. To solve the problem of surge protection, experts recommend installing an amplifier between the radio and speakers (see video on how to do this here).

Another way to solve the problem of the radio automatically turning off when the volume increases is to check the wires leading from the radio to the speakers, which may have a short circuit. Check all the wires leading to the speakers one by one - if there are any that are pinched or twisted, then by changing their position to the correct one, the problem with the operation of the radio may disappear. If the wires are severely damaged, it would be advisable to replace them with new ones.

Lack of car radio power supply

When you turn up the volume on the speakers, the radio may also turn off because the cross-section of the wires cannot withstand the load, causing the fuse to trip. To solve this problem, you need to change the wires to thicker ones, and also power the radio directly from the battery. In 90% of cases, this helps to get rid of problems in the operation of the radio, as well as improve its performance: the device will work even when the engine is started, with the cigarette lighter working and the phone being charged.

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. It consumes a large amount of electrical energy - at the moment of starting a cold engine, the voltage in the car’s on-board network drops significantly and the radio simply does not have enough.

such a problem. The radio in the car turns off and on by itself,

Leave the radio overnight in the car with the window open. It will definitely not turn off on its own anymore. Just like turning on.
This is a radio tape recorder, I got full along the way... There was such garbage at the top five when I worked in a taxi. Or is it powered through the lock, you need to twist the constant plus with the plus on the lock together when connecting. Bypassing the castle, of course.
Andryukha, I have the same problem now. The radio is connected to the cigarette lighter and sometimes turns off on its own. Tell me, did you solve the problem? And how? My mail
the panel is coming off or the connector is on the back, or the wires are half-broken somewhere, or maybe it’s just glitchy.
Mine is having the same problem now. But only when the car is running. It works fine when the engine is turned off. + connected directly from acoma. I don't know what to do.
If the panel is folding, then it’s better to buy a new, I mean, radio!
yes the relay or contact is loose
Either the contacts on the back are loose or there is a glitch in the radio itself.
This panel does not fit tightly. I have the same
The magnet is stuck, I need to sprinkle it with some water.
Magnitollo lives his life untouched, and you don’t.
But I haven’t tried to watch a lot. (grounding the radio). If it is poorly grounded and the ground moves away, then it will turn off from time to time, and also after the radio does not turn off, something else may be the fuse is weakened. The Lada is one of the weak points. In general, look at how it is connected, if it is embedded in a common circuit, then this is not good. It is better to connect the tape recorder and other equipment with separate wires from the battery and put a fuse on the positive one. The wire has a cross-section of at least 4-6, and if the sub and amplifier are all 8. There are special silicone wires with minimal loss of conductive current (they do not freeze in winter). PC: Never connect the tape recorder from the cigarette lighter or any other source of the system. Wiring is rated for specific amps. Their excess leads to melting of fuses and, as a result, to fire.
drummer, definitely.
look at the fuses
The radio tape recorder goes into another world. Mine has already left this world. I bought another one. Everything is fine.
There are modern powerful radios (alpine, pioneer) for which 12 volts is not enough, and in addition to this, many additional devices are required. Many people connect their radios incorrectly, and in such a way that even when turning on the turn signals or headlights, they will turn off. The search engines are full of this information!! Read and learn modern auto electrics! But the best option is to entrust this matter to a normal auto electrician.

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. The condition of the battery must be taken into account.

The radio turns off in the pits

31.03.2015 12:35 #1

The radio on my truck turns off when shaken and turns on immediately. The head is pioneer deh-1320mp, in theory there should be anti-shock. When listening to the radio, it does not turn off. I don’t know how it’s connected yet, but obviously not directly to the battery. Yes, I once opened a window (with a power window), with the car turned off and the radio turned off. I think it's a wiring issue, but why doesn't the radio turn off when listening to the radio? Useful topics:

31.03.2015 12:35 # 0+

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Best wishes, Administration of the Car Audio Forum Radio

31.03.2015 12:47 #2

1st: Secure the GU itself properly so that it doesn’t dangle, etc. 2nd: Connect the GU directly, through a fuse, to the battery with a wire with a cross-section of 2.5 square meters. mm. 3rd: Check the standard wiring of the car, start with the ground from the battery to the body and engine, measure the voltage with the car running and switched off.

31.03.2015 13:08 #3

It can fool your head, especially if it’s glass and not English.

31.03.2015 13:09 #4

We need to work thoroughly on the third point, one day I honked the horn, but the car stalled and the radio did not work. A fuse for the engine control system and another fuse under the steering wheel blew out (I don’t even know whose it is, whether it was from the alarm system (and it was removed), or from the radio).

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. The starter begins to turn the engine, while the instrument lighting dims to a greater or lesser extent, and the power unit turns off and restarts until the engine itself starts operating.

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.

This voltage drop during startup is predictable. In this case, the main task remains to start the engine, and not to maintain the operation of other devices (heated mirrors and windows, headlights, radio, etc.). In other words, after turning the ignition key, all energy is sent to the starter.

If we talk about the radio, when the voltage in the on-board network drops, the power supply automatically turns off. This function is protective. The head unit itself contains a special program that restarts the car radio to protect it from freezing when the voltage drops.

However, it can be noted that this does not happen in all cases. For example, after the engine has been warmed up or the car has driven several kilometers after being idle, the radio does not restart when trying to restart the engine. Also, some power plants never turn off when starting the internal combustion engine, even if such a start is very difficult (the starter turns slowly, the dashboard dims, the headlights go out, but the music plays). Let's figure it out.

In practice, everything will depend on the battery charge level and the condition of the battery. For example, the battery is slightly discharged, and the car starts in the winter after being parked overnight. Under such conditions, the starter will naturally need to turn the engine longer, since the engine oil thickens in the engine under the influence of negative temperatures, the fuel pumps and evaporates less well, etc.

However, after the engine starts and runs for some time, the battery replenishes the lost charge thanks to the operation of the car generator. The oil in the engine also thins out, etc. This means that when restarted, it will be much easier for the starter to start the internal combustion engine, that is, there will no longer be a significant voltage drop. In this case, the protection of the car radio will no longer work, since the voltage simply will not drop to the minimum required by the manufacturer of the head unit.

How to complete the demo

When supplied by the Pioneer manufacturer, the device is set to DEMO ON. Immediately after purchasing and connecting the car radio, it is important to understand and disable the demonstration, designed to advertise the device when selling. It is possible to use the Pioneer car radio in this state, but it does not seem comfortable, since when the device is turned off, the backlight does not go out and the creeping line does not disappear from the display.

Read more: How to set up a float chamber

Disabling Demo on the Pioneer radio is very simple:

If long pressing on mute does not help, then you need to turn off the Pioneer radio, go to the engineering menu and long press the SRC (Source) key.
In the settings, turn the wheel to reach the DEMO line.
Switch from ON to OFF indication.
Close the settings by pressing BAND.

Pioneer car radio engineering menu

Important: if the red wire (ACC) of the Pioneer radio is not connected to the contact that turns the ignition on/off, the car’s battery will be discharged.

Thus, after purchasing a modern Pioneer car radio, setting up the device is quite accessible for independent actions.

Demo mode disabled

Demonstration on JVC car radio

When supplied by the Pioneer manufacturer, the device is set to DEMO ON.
Immediately after purchasing and connecting the car radio, it is important to understand and disable the demonstration, designed to advertise the device when selling. It is possible to use the Pioneer car radio in this state, but it does not seem comfortable, since when the device is turned off, the backlight does not go out and the creeping line does not disappear from the display. Disabling Demo on the Pioneer radio is very simple:

If long pressing on mute does not help, then you need to turn off the Pioneer radio, go to the engineering menu and long press the SRC (Source) key.
In the settings, turn the wheel to reach the DEMO line.
Switch from ON to OFF indication.
Close the settings by pressing BAND.

Pioneer car radio engineering menu

Thus, after purchasing a modern Pioneer car radio, setting up the device is quite accessible for independent actions.

Demo mode disabled

The Japanese from JVC have a demo that turns on automatically if there is no sound playback for several minutes. But disabling the Demo is simple:

Press the SEL (select) key and hold it until one of the setting items is displayed on the monitor.
By going through the menu items, select the DEMO OFF item. On some models, select the DEMO ON item and press the button to switch to DEMO OFF.

JVC car radio

To disable the Demo, which starts after turning off the Sony radio, you must follow the following sequence:

Press and hold the Select key. The Setup Monitor appears.
Turn the tuning dial until “DEMO” appears, then press the tuning dial.
Turn the dial to select “DEMO-OFF” and press the dial again. The setup is complete.
Press the (BACK) key. The monitor will return to normal music/video playback status.

By the way, many car enthusiasts complain about independently switching the player to another radio wave. The AF (alternative frequency) function is responsible for this. It is responsible for switching to a more powerful radio signal if the selected frequency, in the opinion of the device, is not strong enough.

It’s easy to disable it, for example, for a Pioneer DEH car radio, the procedure is as follows:

Press the “TA” button and do not release it until the “AF” function turns on. The “AF” indicator will appear on the display.
Press the “TA” button and do not release it until the “AF” function turns off.

In players of other brands, disabling the demonstration is carried out in a similar way:

go to the engineering menu;
by searching through the parameters, find the line DEMO and change OFF to ON;
exit the menu.

Everything is elementary, the backlight will no longer disturb the driver and passengers, the battery will become more protected from discharge, and music on the road will be pure pleasure.

Quite a lot of people have been faced with the question of how to turn off the Pioneer radio. Owners of standard radios especially often face this need. In this case, when you turn off the radio, you will see a transition to the “clock” mode. In this case, the button backlight will work. Drivers usually blame this on the incompetent technicians who connected the device.

How to turn off the Pioneer radio? This question can be heard quite often in places where car enthusiasts gather. The thing is that the instruction manual does not cover this issue. If you read it, you might think that this behavior of the stereo head unit is quite normal. But then bad thoughts pop up. The main one is the possibility of battery discharge during long-term parking. Therefore, you still need to learn how to turn off the radio.

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.