What You Need to Know About Car Amp Wiring. The nature of car fuses means that you can easily replace a weak 5A fuse with a heavy-duty 40A fuse, since they have the same size and shape, but doing so could destroy your wiring or even cause a fire. Some parts of your car, like the headlights, radios, and other electronics might only require a very little amount of power, or amperage, which means that it can run off of a very low, or almost dead, battery. If it still won't turn … If your car won’t start, but lights come on, and the radio is turning on, it could be a few different problems. Poor head unit grounds are more likely to cause issues like ground loops than total failures, but if everything else checks out, you will want to verify that your head unit has a good ground before you condemn the unit. As for the year, it is a 2004 beetle. The most common problem that causes a car to click and no start is a weak battery. Since these parts require no more than usually 20-30 amps, they can run on a … If the amp fuse is blown, that is probably the reason that you aren't getting any sound out of your car radio. My Kenwood in dash gps/radio wont turn on after my battery died last night. Radio won't turn on 2 Answers. Some amps have in-line fuses while others are fused at the amp itself, and some installations have more than one fuse. yes, the display is on the screen but the radio & clock won't turn on Car Electronics Technician: Louie , Car Electronics Technician replied 6 years ago I understand. The idea is that the head unit will be rendered useless if it is stolen, which is supposed to deter the theft of these units. Jeremy Laukkonen is tech writer and the creator of a popular blog and video game startup. Your radio should have a means to turn it off while the car is running. Problem: The Stereo Has No Power and Won't Turn On. In most cases, a poor ground won’t cause the head unit to fail to turn altogether, while a ground that has become disconnected altogether will. The issue could be related to the amp if you have an external amp or the speaker wires. Check if the power connection wires are properly connected. Turn the ignition key to the accessory setting and press the “Power” button a few times to verify the condition. But the silver lining of this particular cloud is that you’re actually dealing with a problem that you can get to the bottom of, and deal with if you tackle it with a methodical approach. The unfortunate fact is that if your car radio is suddenly doesn't work, you may be in for an expensive repair bill, or even have to replace the unit altogether. Take your multimeter and set it to DC. For instance, a loose or corroded antenna can cause poor reception or no reception at all. Jeremy Laukkonen is tech writer and the creator of a popular blog and video game startup. What to Do When Your Car Radio Suddenly Stops Working Car Radio Suddenly Won’t Turn On. If it is faulty, the car won’t start, yet the radio and lights will remain operational. Depending on where your amp is located, it may be easy or quite difficult to check the amp. My Car Died and Then the Radio Didn't Work After I Jump Started It. Sometimes when I try to start my car, it doesn't light up that the car is in park on the dash. Update: Thank you guys for your help! Why did my car radio suddenly stop working? While it is possible for a car radio to fail altogether, there are a lot of internal and external issues that can be fixed well short of total replacement. If any of these fuses are blown, that may be the reason that your car radio won’t turn on, so you will want to replace them to see if that fixes the problem. This can happen as a result of wear and tear, blockages, or leaks in the lines. Get the Latest Tech News Delivered Every Day, Bench Test the Head Unit and Replace if Needed, What to Do When the Gauges in Your Car Aren't Working. I have a salvaged Volkswagen Beetle and I've pressed the power button to turn my radio on but nothing happens. The most likely culprit for this issue usually deals with the battery. Prepare your multimeter. What could be the problem? You will need to jump-start your car with a jump box, jump it … Head unit wiring: If this problem has always been present, since the head unit was installed, then … Some head units have a security feature that prevents them from operating after power has been interrupted. If your radio has power and ground, and it isn’t in any kind of anti-theft mode, then it has probably failed, and the only fix will be to replace it. If the radio turns on, the issue is resolved. Securely plug your device to a working wall outlet. Why Doesn't the 12v Socket in My Car Work? Step 2 Check that the stereo circuit fuse hasn’t blown. Make sure that your stereo doesn’t have an alarm and take it out of the cockpit but don’t unplug it. Before you get any further into the diagnostic process, you will want to verify that your head unit doesn’t have any sort of anti-theft mode. After you have verified that the unit is actually failing to power up and that it hasn’t entered an anti-theft mode, the next step is to check the fuses. If the radio itself will not turn on, chances are good that there’s one or more blown fuses causing the problem. ​​If your radio flashes "code," then this is probably the issue you're dealing with. If your car won’t start but the lights and radio work fine, it could be one of several problems, possibly including a dead battery. Why Can’t I Turn the Volume on My Factory Radio All the Way Up? After I pull the key from the car, the radio will still be on. Any ideas? Since the car isn't registering in park, it won't turn on. Jerrick Leger is a CompTIA-certified IT Specialist with more than 10 years' experience in technical support and IT fields. Ask Your Own Car Electronics Question. If you have a voltmeter or test light, you can check for power and ground at the fuse block and also at the radio itself to help locate the fault. Some of the most common issues include a blown fuse, bad or damaged wiring, and anti-theft modes that are often triggered when the battery dies. Blown Fuse: One of the most common reasons for a car radio to stop working is a blown fuse. What Causes a Car's Electrical System to Suddenly Stop Working? Answer Save. Car radio in my Volkswagen Beetle won't turn on? The radio doesn't say LOC, LOCKED or INOP it is just off. I was able to get a jump and get the car started but the gps/radio wont turn on at all. Identifying Aftermarket Car Stereo Wire Colors. If your radio doesn’t work, but you can listen to CDs, MP3 players, and other audio sources, then the problem is either related to the tuner or the antenna. Sounds like someone hooked up the wire from the radio to an ignition wire instead of an accessory wire under the dash/in the steering column. Check to make sure the fuse is not blown. Since the car isn't registering in park, it won't turn on. The article is intended to provide basic troubleshooting steps to determine why the radio won't power on. A fuel pump sends gas to the engine. If there are any doubts about the pigtail, you can remove it and replace it, ensuring that it seats properly. He also ghostwrites articles for numerous major trade publications. If the issue is still unresolved, service may be required. New pioneer car stereo won't turn on - Answered by a verified Car Electronics Technician We use cookies to give you the best possible experience on our website. Another surprisingly common car antenna issue has to do with manually retractable whips. I put a new radio in my 2006 Jetta TDI in August. Once you have determined that it is a battery issue (steps 3-5), it requires further troubleshooting to determine why the batteries are draining so quickly. Step 5. If you find that your sound comes back on if you open and shut the door, that may be the problem, or it could be a ground issue. How to fix a car radio that won’t turn on. Turn the radio on. Here are a few different common problems and potential solutions. Most car radios have two power wires—one that is always hot, which provides power to the memory, and one that is only hot when you turn on the ignition key. Step by step: How to Fix a Car Stereo That Has Power But Won’t Turn On? Of course, a blown fuse is often indicative of another issue, so you should never replace a blown fuse with one of a larger amperage. If your particular installation has an adapter that connects between the head unit and the factory wiring, then you can also unplug the entire thing and reconnect it to ensure that everything is making good electrical contact, and then attempt to power up the radio again. With that in mind, you may want to check to see if the pigtail connector is seated properly in the head unit. Check your owner’s manual. He is also a systems administrator for an IT firm in Texas serving small businesses. In some cases, with certain aftermarket head units and adapters, you may also find that unplugging the head unit and adapter for a time will fix the issue. No power. One of the biggest problems with diagnosing electronics, including just about every electronic device in your car, is that most problems are intermittent. This isn't going to be the fix you're looking for if the radio doesn't work at all, but if you're just having a problem with weak signals, then it may do the trick. Is There a Cheaper Alternative to Air Conditioning? At this point, you'll want to break out some basic car diagnostic tools, like a multimeter and a test light. How to Fix a Car Radio That Won't Turn Off, What to Do When Your Car Interior Lights Stop Working, Common Car Amp Problems (And How to Fix Them), What to Do When Your Car Radio Suddenly Stops Working, Why Your Car Won't Start Even Though the Lights Work. Attempt to turn on the car stereo system. This is may be the problem with your radio if it does not turn on completely. Sometimes when I try to start my car, it doesn't light up that the car is in park on the dash. Because if both the power and ground are good, and your head unit still won’t turn on, it’s probably toast. Part of the series: Maintaining a Car's Electrical System. Intermittent problems can be impossible to nail down. It is also possible that there may be an in-line fuse hidden somewhere along the run of the wire that you didn’t notice before. Some head units have built-in fuses, typically located on the back side, and some installations have additional in-line fuses located somewhere on the power wire or wires. Car won't turn on 3 Answers. Potential Cause: The most likely cause for a car that runs fine, but the stereo won't turn on at all, is a blown fuse. Checked outlets & circuit breaker but it still won't turn on. Car won't turn on 3 Answers. Take the stereo out. If the display is totally blank when the unit fails to power up, that is a good indication that you’re actually dealing with another problem. … If your radio turns on, but you don’t get any sound from the speakers, there are a whole lot of different potential culprits. 2 other fuses that affects the radio are 28 and 41. In these cases, you may benefit from leaving everything unplugged for fifteen to twenty minutes, reconnecting, and then checking the operation of the unit again. I realized after I installed the radio that it won't turn off with the key in the car. This unit #Pioneer XRJ-25M Model is ZA25M...is there a fuse in this unit, or will I have to take it to a Service center for repairs. While it may be tempting to "fix" a blown fuse by using a heavier duty fuse, it's important to actually drill down, find the root of the problem, and correct it. It's a JVC KW-R910BT. May 3, 2019 By 1sixty8 Whether the sound system in your car or truck is bone stock or upgraded with premium amplifiers , speakers and subwoofers , the system’s maximum volume may not directly coincide with … If any of these fuses are blown, that may be the reason that your car radio won’t turn on, so you will want to replace them to see if that fixes the problem. You can bench test the unit by connecting the power and ground leads directly to 12V positive and negative, if you like, but if the power and ground both showed good in the vehicle, you are unlikely to find a different result with the unit removed. All the fuses associated with the radio look fine, I only had one spare fuse so I changed the one on the passenger side panel and still no luck. If it does, then you have a short somewhere that’s probably going to be a little more difficult to fix. Car stereos with... ​​If your radio flashes "code," then this is probably the issue you're dealing with. If you have a car radio that works sometimes, and suddenly cuts out at other times, that can be more difficult to diagnose. The main … Before you progress any further into the diagnostic procedure, you will have to remove the head unit to gain access to the wiring. For instance, it could be as simple as a blown fuse if the display doesn’t come on, or it could be an antenna problem if the radio part doesn’t work but other audio sources (like CD players) do work. Fuel pump problems can occur when pressure in the fuel transmission system is low. 4 Answers. Michael Heine is a CompTIA-certified writer, editor, and Network Engineer with 25+ years' experience working in the television, defense, ISP, telecommunications, and education industries. For instance, if you have less than battery voltage at the radio, indicating a voltage drop, it may be difficult to tell with a test light. He also ghostwrites articles for numerous major trade publications. If you're lucky, you might even be able to fix it yourself. The problem may be in this circuit if this is the way the car is set up. So I always just turn the radio off manually via the power button on the JVC unit. If a car wash attendant pushed it in to be helpful, or a prankster shoved it in while your car was parked somewhere, you could very easily climb back in, turn on the radio, and find that it won’t work at all. You’ll probably have to buy a new head unit if the issue is in the tuner, but a lot of these problems are actually antenna issues. If you have access to a multimeter or test like, that's the better way to go since it is possible for a fuse to fail in such a way that it is difficult to tell one way or the other simply by looking at it. Problems with the Fuel Pump. If the fuses are good, and the connections are good, then the next step is to check for power at the radio itself. In other cases, the head unit will appear to be totally dead, and you will have to enter a code or perform another manufacturer-specified procedure to get it working again. You can test an automotive fuse by visually inspecting it, or you can use a multimeter or test light to check for power on both sides of the fuse. Check the Pigtail Connector Some Common Causes of This Type of Problem Security features Blown fuses. Some cars are able to receive some stations, depending on proximity and signal strength, with the whip retracted, while others can’t tune in anything at all. In order to track down the reason that your car radio won't turn on, you'll want to tackle each of these potential issues one at a time. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. In some cases, a broken wire or bad connection in the speaker wires where they pass through into a door can also cut off the sound altogether rather than just cutting off the sound to one speaker. The reason why the radio, dash lights, headlights, and other electronics draw power while the engine doesn't has to do with the amount of current each device draws and what may be interrupting the path. I installed a new battery in my car and now my aftermarket alpine stereo won't turn on. The battery is not completely dead, but it is discharged, and even though it turns on the car lights, it can no longer start the engine. You might want to start by checking the fuses. Our Pioneer stereo unit won't turn on. However, you may want to consult the owner’s manual, if you have access to it, or contact the manufacturer if you don’t, in order to verify that there isn’t a specific procedure that you will need to follow. If the fuse connected to the car stereo has blown, the circuit will be incomplete and power simply can't reach the head unit (the part of the stereo in the center console). Most car radios have either one or two fuses that you’ll have to check, and you may also have car amp fuses and other related components in the mix. Radio won't shut off when the door opens If my site is a value to you, I need your help could you please donate so I can keep this site free to everyone. You can look up your car here, find the color of the accessory wire and reconnect the radio to it. Many GM vehicles have a system that allows the radio to stay on when you turn the key off, until you open a door. If you've recently moved to a new area, or you're just trying to listen to one station that you can't receive any more, then an antenna booster may also fix the problem. Disconnected battery and reconnected no radio,won't turn on.checked fuse box under dash and under hood.never did this before. In that case, tightening the antenna connections or buying a new antenna will fix your car radio problem. 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