One possibility is that the amplifier is going into protect mode. Here are the most common causes of a car stereo only working sometimes, and what to do about it: If your sound cuts off, or the head unit turns off intermittently, when you’re driving down the road, the problem is usually in the car stereo wiring. Can a car stereo place fix this or is something more wrong with my car? 2 people found this helpful. And on and off and it keeps doing so. It may happen due to the capacitor. I have had this amp for over 3 years, in 3 different cars and it has always done this. There might be a stuck power button on the remote, or the remote's batteries are running low. I took it into the tmobile store and they updated it, (it behaved perfectly fine at the store, of course) however when I looked at it after leaving the store the update was still downloading. It didn't work, my sub still makes a pop when I turn off my car. I have the same problem on AVH-X2750BT . Car stereo turns on and off My AC Delco cd stereo turns off after a few minutes while driving, then turns on after I - Chevrolet 1997 Camaro question unless I turn the ignition off. It won't stay on for more than 20 seconds before it shuts off. Why does my Car Subwoofer Turn On and Off? well I connected the yellow one from my radio to the one in my car, all the other ones for speakers, then there is the ground one ( obviously) and then I have a red and a orange/white one in the radio but not in my car, instead there is 2 orange ones which dont give off any power at all either. Car stereo turns on and off My AC Delco cd stereo turns off after a few minutes while driving, then turns on after I - Chevrolet 1997 Camaro question If it is with the feed to the radio you need to check the wiring path from the radio fuse in the fuse block right through to the radio itself. If you go straight to popping in a new stereo, and there is another, underlying problem causing it to only work sometimes, you’ll end up with the same old problem on top of the bill for replacing the head unit that actually worked fine all along. After 5 months of ownership with ZERO issues has started shutting off and then restarting itself as if I am turning it and off while in use. For instance, a break in the speaker wires leading to a door speaker may cause the sound to cut out altogether, and then kick back in when the door is opened and closed again. I just hooked up an amp in my car and it was working fine. Think the only option left is to get a new head unit and see if that cures it, © 2021 iFixit — Licensed under Creative Commons — Privacy — I watched it and the dome light would turn on for about 20 seconds and then then turn off for about 20 seconds and then turn back on etc. Had this changed to a Sony radio now doing exactly the same. It seems to happen more often when the car is stationary or idle. I've bought a Honda prelude 94, im trying to install an after market stereo and when I attach the cables to the back of stereo it lights up but as soon as I press "source" to switch to radio it lights up and off...and the antenna aerial goes up 2 cm and down and it repeats. If you have a DMM (Digital Multimeter) and know how to read circuit diagrams there are service manuals for the unit available online but unfortunately you have to buy them. These are all faults that can cause an intermittent failure, where the car stereo will sometimes work and sometimes not work, so tracking down the real problem may be difficult unless the fail state lasts long enough to check everything out. Wait for 5 seconds, then turn Bluetooth back on. 01/19/2018 by If the radio cuts in, or out, suspect a crimped wire. Jeremy Laukkonen is tech writer and the creator of a popular blog and video game startup. You can opt-out at any time. If the stereo system has a demonstration mode, ensure it is disabled. I have the same problem... but mine is a Lil different... if you switch on the radio the powers comes on, but as soon as you leave the on and off switch button, it goes off again by itself. I had already opened up the console and check for burnt fuses and loose wiring but everything seemed to be intact. If everything else checks out, you could have an internal fault in the head unit. After driving a few minutes it will turn on when I hit the brakes, use a turn signal, hit the power windows or just by itself. When the thermostat sends the signal to turn the a/c unit on it does so as it should but it runs for 15 seconds and then turns off. If everything looks good at the back of the head unit, you’ll want to check that the ground connector, where it attaches to your vehicle, is tight and free of rust. Originally it would flicker off for a second and lose all settings so was an issue with permanent live.. i needed to change the permanent and switched live over (Vauxhall idiosyncrasies) after doing this the same fault would happen but would not lose settings, so perm live is now steady.. i then added a tap wire to from perm to the switched live feed in order to give a steady 12v supply. The lights are steady, as well as dash lights, etc. radio settings can make the radio go off in till you disconnect the music source and set the settings correctly. This is especially true if the display shuts off so that you can tell that the stereo is losing power. If your car stereo turns off and keeps resetting itself, then you should check the fuse on it. Listening to the radio in your car usually requires the ignition switch to be in the “accessory“ position. The unit has been cleaned but still the same problem. Can a bad cell in a battery cause the strange electrical system problem with my radio? Diagnosing something like no sound from speakers is a more complicated issue, but it involves checking the integrity of all the speaker wires and the functionality of each individual speaker to rule each one out in turn. Mark helpful. New Categories. Does it happen when the car is stationary? Since we got a new "big" TV though, the receiver started turning off and then on again repeatedly, especially when the audio is louder. The capacitor may be faulty or and does not have the ability in it. Decibel settings are to high, and balance in left mid l, left mid and right also in right speaker does "Radio check it self if to much power is going to the radio", nothing wrong if cables are correctly connected. The poor connection would be likely to poor wire routing, pulling or pushing on a plug. I bought a refurbished Denon AVR-1612 from Accessories4Less at the suggestion of this forum and AVSForum. If it only happens to the radio with the engine on and more when you are driving it sounds like there is a loose connection or dry soldered joint in the power supply for the radio or in the radio. After pulling the radio fuse I disabled the radio, but the car battery still died. Carlos Cano, Try bypassing the pioneer fuse/resistors in the pioneer wiring harness and then if it fixes your problem replacing it with a new harness from ebay,it fixed my problem. It could be in the fuse box, the connector to the radio or even in the radio itself. I had this same problem with two other flip screen units, and was told they couldn't be fixed. Decibel settings are to high, and balance in left mid l, left mid and right also in right speaker does "Radio check it self if to much power is going to the radio", nothing wrong if cables are correctly connected. It’s also worth mentioning that some head units have built-in fuses, which you may want to check before throwing in the towel. I bought a refurbished Denon AVR-1612 from Accessories4Less at the suggestion of this forum and AVSForum. @krystian1. Mechanic's Assistant: Is the tire cold or warm? Mark helpful. I think I was mistaken when I said the amp turns on when the car is off. ok here's the deal. If it is a glass type fuse, again is it tight in the fuse holder, have you tried a different fuse of the same rating? It's completely random. After 5 months of ownership with ZERO issues has started shutting off and then restarting itself as if I am turning it and off while in use. BUT it also happens with other accessories; like my electric convertible top won't work, door open alarm won't chine, seat belt alarm also.. Fuses seem okay, but I'm so lost on finding the problem. I can't seem to find the answer to this problem. Ensure no buttons or keys are stuck on the remote control. Powers Off, then back on and remains fine ,Until I restart the engine. A simple, easily fixed problem is usually the culprit. everything worked. And just yesterday it turned on when i moved my car, but in the morning i checked again and it was off. Replacing a Car Stereo That Only Works Sometimes, Common Car Amp Problems (And How to Fix Them), Fixing a Car Radio That Stopped Working After the Battery Died, Identifying Aftermarket Car Stereo Wire Colors, What to Do When Your Car Radio Suddenly Stops Working, How to Fix a Car Radio That Won't Turn Off, What to Do When the Gauges in Your Car Aren't Working, Car Stereo Amp Turns On and Off by Itself, What You Need to Know About Car Amp Wiring, What to Do When Your Car Interior Lights Stop Working, common causes of a car stereo only working sometimes. It does this until I manually turn the unit off. I know the radio ground is attached and I installed the radio myself. I think this may solve the problem. On the MTX amp, the power light is on (red) when the car is off. 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