No power to ignition,tail lights,no interior lights,and no radio
My ignition don't have power to dash and fuses are good
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
The vehicle may have a defective front control module that is attached to the front of the main fuel box in the engine compartment. Have the vehicle scanned and tested to see if the module is functioning correctly or is generating a code. You can check all the fuses in the fuse box and disconnect and reconnect the module to see if there is any corrosion on any of the pins in the connector. Add dielectric lube to the module connection and reinstall to see if power is restored. Make sure the battery is disconnected whenever disconnecting the module. If power is still not restored, then have a mechanic diagnose your electrical system and replace the module if it is required. They will be able to go through the pinpoint testing of the module and ignition switch.
How to Identify and Fix Common car Problems ?
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Loose wiring, corroded connections, damaged starter components, oil leaks, and a bad relay or fuse are some of the reasons why a starter can fail. As the driver turns on the ignition switch, a current for the starter should flow and get the engine running. If not, the starter might be faulty and require replacement.
1 Answer. If you have no dash lights or interior lights that means that either your battery is dead or there`s a break in the electrical circuit required to power your car. The test you need to do (or have someone else do) is to check the battery voltage.
If you don`t hear clicking when you start the engine, the problem may be a dead battery. If you hear clicking, but the engine doesn`t crank, the starter might not be getting enough electricity. Using your owner`s manual and a voltmeter, you should be able to test functionality.
Electrical issues or inoperative accessories. Sometimes, a faulty ignition switch can prevent the accessories and auxiliary functions to stop working since their circuits aren`t receiving a signal to power up. Stalling when driving.
The most common reason cars don`t start is a dead or faulty battery. Even though most cars run on gasoline, they all require electrical power to function. The starter that cranks your engine to start requires an electrical signal to fire. If something`s wrong with your battery, your car engine won`t turn over.
What are you required to check when one of the vehicle`s lamps is not working? The bulb and the fuse connected to it. The intactness of the lamp`s lens. The functionality of the lights handle.
Why won`t my car start but the battery is good? If your car won`t start but the battery is good, the most common cause is a faulty starter – though it could also be to do with your fuel. You may have insufficient fuel to get the car going.
If they don`t first check the main battery fuse which is situated somewhere near the battery, if that is ok the battery needs to be checked. If you have lost your 12v system, it could mean your transformer has stopped working and the battery has gone flat due to normal use without charging.
It`s safe to say this is cause by either burned out bulbs, or an issue with power or ground. Check for power and ground, and fix if necessary. Otherwise, replace the bulbs. Bulbs usually don`t burn out together, but it`s still important to rule that out by checking for power.
If you have a malfunctioning tail light, it could be a matter of a blown fuse. The fuses work with your car`s electrical panel and if they`re blown, it can cause several lights to stop working. Replace the fuse and see if this helps. Another issue may be related to your wiring.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Heater control system will not power up even though there is power to it
Hi and thanks for contacting Your Mechanic. When the penny was in the cigarette lighter, the penny act as a conductor and shorted out the circuit. The cigarette lighter is either powered all the time or powered when the ignition switch is on, but either way, the cigarette lighter is tied through the ignition switch. Check the fuse box for power to it and ground. If the fuse box has power and a ground, then the ignition switch burned from the short in the cigarette lighter. This would explain that phenomenon light issue and all of the electronics failing in your vehicle. Check all of the wiring to the ignition switch and the main power to the switch. If there is power to the switch but no power coming out of it when the key is in and turned to ACC or ON positions, then the switch needs replaced. If the switch is working fine, then the fuse box has a short in it and it needs replaced. If you need further assistance troubleshooting your massive electrical outage in your vehicle, then seek out a technician, such as one from Your Mechanic, that can assist you.
My radio has power but is not turning on
Hello there. A few different faults can cause the radio to cut off like this when it is powered up. The most common would be a voltage spike from when it was plugged in. Other potential issues include a shorted wire or a faulty radio. A qualified technician, such as one from YourMechanic, will be able to inspect the electrical system and perform any repairs required.
Car radio will not pick up radio stations.
There are multiple issues that could cause a radio to not pick up an AM / FM signal. In most cases it’s due to faulty wiring, a loose ground wire or the wiring running to and from the antenna. However, it’s also possible that an internal component inside the radio such as an electrical relay has been damaged. It might be best to purchase a new tuner; as diagnosing and fixing this issue would most likely be more expensive than the cost of buying and installing a new one.
Instruments, interior lights, radio, and power windows not working.
I would test all your fuses and make sure they are all good. There should be one for the instrument cluster and interior lights. Have a mechanic from YourMechanic do it if you are unsure how.
My radio,interior lights and buzzer when I open my door with keys in ignition don’t turn on in my Mazda MPV. What can cause this?
Hi there. In some cases, a damaged main electrical relay or accessory relay can cause the symptoms you’re describing. In other cases, individual fuses might be damaged. It is also possible that you might have a faulty ground wire connection. Either way, diagnosing electrical problems like this can be complex and difficult, so it might be best for you to have a professional mobile mechanic come to your location and complete an electrical problems inspection.
I have no power at all to my factory radio. I’ve disconnected battery n waited got nothing all my fuses are good an still nothing
Hi there. It sounds like you may have blown radio fuse. After some research, I found that the radio fuse is most likely in the right side instrument panel fuse block. Locate and inspect the fuse with a digital volt/ohm meter. If you do not find supply voltage on both sides, then the fuse is likely blown; probably due to an unseen/noticed short during a repair. Replace the fuse and recheck for supply voltage on both sides of the fuse and at the radio connector. If the connector does not have voltage, then there is either an open circuit/broken wire or it may be installed incorrectly. If voltage is available, reseat the connector in the radio to make sure the connector is all the way in and providing a good connection; slightly tug at the wires to check for loose terminals and correct as necessary. I strongly suggest having a qualified technician perform an inspection to avoid any additional concerns from occurring or replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a radio does not work inspection.
Replaced alternator, now aftermarket radio will not turn on.
It sounds like you may some faulty wiring (to speakers or head unit), a bad fuse or a short somewhere in the circuit related to the stereo. Particularly, if the alternator was replaced as a result of the system being overcharged, this may have caused a fuse to pop. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect your radio not working.
No power windows, overhead lights, or power to dash cluster
Hi there. This can happen for a few different reasons. The most common being that the computer will shut down these circuits due to the low voltage. It is a protection system that keeps the battery from being drained by unneeded components. It can also occur if the battery was jumped backwards as this can blow fuses or damage the modules in the vehicle. If the vehicle was jumped correctly then I usually remove the battery and fully charge it. After it is charged I reinstall it and everything should then come back online. If not then the module will need to be scanned for codes and to see if it is coming online as it should. If it is not then it may have been damaged. If you need to have this electrical problem inspected, consider YourMechanic, as a certified mechanic can come to your home or office to [diagnose why these electrical systems are acting up] https://www.yourmechanic.com/services/electrical-components-are-not-working-inspection