Tech

Why Your Car Won’t Start Even Though the Lights Work

Check these 3 things before going to the mechanic.

If the car won’t start, but the lights and radio are working properly, this could be one of several issues. For example, your car battery may be dead. While radios, dashboards, headlights and other electronic devices consume electricity, the engine has nothing to do with how much electricity each device consumes and what can interfere with its path.

Shikono/Getty Images

battery check

Do not rule out the possibility that the battery will be discharged just because some electrical components are working. Batteries can sometimes power electronic devices with a low charge. Headlights, radios and other automotive electronics draw very little current, typically 20-30 amps or less. A motor starter, on the other hand, draws up to 300A at a time, which is too much power for a battery with a low charge.

car battery connected to car frame

Pixabay

If the hydrometer is low on battery or fails the stress test, it needs to be charged. Accepting the charge or jumping from another battery and the vehicle departs fixed the problem. If the fuse is blown, the ignition switch is defective, or won’t start, the starter may be bad.

Check fuses, fusible links and ignition switches

If the battery is in good condition, look for a blown fuse or fusible link. Check your car manual to see where the fuse box is, then open it. With the vehicle off, inspect the fuse for metal wires. If the metal wire in the plastic case is cut or damaged, the blown fuse will prevent current from reaching the starter relay or solenoid.

You may need a fuse puller to remove the correct fuse and a light source to view the internal components.

jeep fuse box

Pixabay

If the fuse is good, the car’s ignition switch is faulty. The ignition switch is not a mechanical part into which you insert your car key. It is the electrical switch that the mechanical part works. In some situations, the ignition switch supplies power to the vehicle’s electrical components, but not the engine starter.

Diagnosing and repairing a faulty ignition switch is more complicated than finding a blown fuse. A good rule of thumb is that if the instrument panel and dashboard won’t turn on when the ignition key is turned to the second position (between off and on), there may be a problem with the ignition switch.

If you have a manual transmission, a defective clutch pedal position sensor may prevent the engine from cranking while the electronics are working properly. The purpose of the clutch position sensor is to ensure that the vehicle starts only when the clutch pedal is depressed. So if it fails, the car goes nowhere.

check the starter

The starter sometimes makes a clicking noise when not working, but not always. If you turn the ignition key and it clicks, the starter motor may be defective. But sometimes starters die quietly. Don’t rule out the launcher just because you can’t hear anything.

car starter

Wikipedia Commons

Other signs of a bad starter include: B. Smoke from engine, faulty solenoid, or oil stains under the starter engine. Hire a mechanic to find out for sure.


More information

Why Your Car Won’t Start Even Though the Lights Work

Check these 3 things before heading to the mechanic

If your car won’t start but the lights and radio work fine, it could be one of several problems. For example, your car battery could be dead. 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.

sykono / Getty Images
Check the Battery

Don’t rule out the possibility of a dead battery just because some of the electrical components work. Batteries can sometimes run electronic devices on a low charge. Headlights, radios, and other car electronics draw very little amperage—usually no more than 20 to 30 amps. On the other hand, engine starters pull up to 300 amps all at once, which is too much power for a battery with a low charge.

Pixabay

If the battery tests low with a hydrometer or fails a load test, it must be charged. The problem is solved if it accepts a charge or a jump from another battery and the vehicle starts. It may be a blown fuse, a broken ignition switch, or a bad starter if it doesn’t start.

Check the Fuses, Fusible Links, and Ignition Switch

If the battery is in good shape, check for a blown fuse or fusible link. Check your car’s manual to find the location of the fuse box, then open it. With no power running in the vehicle, inspect the fuse for a metal wire. If the metal wire inside the plastic casing is severed or damaged, a blown fuse is preventing power from reaching the starter relay or solenoid.

You may need a fuse puller to remove the correct fuse and a light source to see its internal components.
Pixabay

If the fuses are in good shape, the car’s ignition switch is faulty. The ignition switch isn’t the mechanical part you put the car key into; it’s the electrical switch that the mechanical part operates. In some situations, the ignition switch delivers power to the car’s electrical components but not the engine starter.

Diagnosing and fixing a broken ignition switch is more complicated than checking for a blown fuse. A good rule of thumb is that if the instrument panel and dashboard do not light up when the key ignition is moved to the second position (between off and on), there may be a problem with the ignition switch.

If you have a manual transmission, a bad clutch pedal position sensor can prevent the engine from turning over while allowing the electronics to work fine. The purpose of the clutch position sensor is to allow the vehicle to start only when the clutch pedal is depressed, so if it fails, the car won’t go anywhere.

Check the Starter

Starter motors sometimes, but not always, make clicking noises when they fail to work. If you turn the key in the ignition and hear a clicking sound, you may have a broken starter. However, sometimes, starters die a silent death. Don’t rule out the starter just because you don’t hear anything.

Wikipedia Commons

There are other signs of a broken starter, such as smoke billowing from the engine, a broken solenoid, or oil soak beneath the engine on the starter. To find out for sure, hire a mechanic.

#Car #Wont #Start #Lights #Work

Why Your Car Won’t Start Even Though the Lights Work

Check these 3 things before heading to the mechanic

If your car won’t start but the lights and radio work fine, it could be one of several problems. For example, your car battery could be dead. 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.

sykono / Getty Images
Check the Battery

Don’t rule out the possibility of a dead battery just because some of the electrical components work. Batteries can sometimes run electronic devices on a low charge. Headlights, radios, and other car electronics draw very little amperage—usually no more than 20 to 30 amps. On the other hand, engine starters pull up to 300 amps all at once, which is too much power for a battery with a low charge.

Pixabay

If the battery tests low with a hydrometer or fails a load test, it must be charged. The problem is solved if it accepts a charge or a jump from another battery and the vehicle starts. It may be a blown fuse, a broken ignition switch, or a bad starter if it doesn’t start.

Check the Fuses, Fusible Links, and Ignition Switch

If the battery is in good shape, check for a blown fuse or fusible link. Check your car’s manual to find the location of the fuse box, then open it. With no power running in the vehicle, inspect the fuse for a metal wire. If the metal wire inside the plastic casing is severed or damaged, a blown fuse is preventing power from reaching the starter relay or solenoid.

You may need a fuse puller to remove the correct fuse and a light source to see its internal components.
Pixabay

If the fuses are in good shape, the car’s ignition switch is faulty. The ignition switch isn’t the mechanical part you put the car key into; it’s the electrical switch that the mechanical part operates. In some situations, the ignition switch delivers power to the car’s electrical components but not the engine starter.

Diagnosing and fixing a broken ignition switch is more complicated than checking for a blown fuse. A good rule of thumb is that if the instrument panel and dashboard do not light up when the key ignition is moved to the second position (between off and on), there may be a problem with the ignition switch.

If you have a manual transmission, a bad clutch pedal position sensor can prevent the engine from turning over while allowing the electronics to work fine. The purpose of the clutch position sensor is to allow the vehicle to start only when the clutch pedal is depressed, so if it fails, the car won’t go anywhere.

Check the Starter

Starter motors sometimes, but not always, make clicking noises when they fail to work. If you turn the key in the ignition and hear a clicking sound, you may have a broken starter. However, sometimes, starters die a silent death. Don’t rule out the starter just because you don’t hear anything.

Wikipedia Commons

There are other signs of a broken starter, such as smoke billowing from the engine, a broken solenoid, or oil soak beneath the engine on the starter. To find out for sure, hire a mechanic.

#Car #Wont #Start #Lights #Work


Synthetic: Vik News

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I'm Do Thuy, passionate about creativity, blogging every day is what I'm doing. It's really what I love. Follow me for useful knowledge about society, community and learning.

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