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How to Fix Car Ignition Problems The car won't begin to start until the ignition switch transmits an electrical signal to the starter motor. Over time normal wear and tear can cause the switch to malfunction. You can remove the steering column trim using special tools to access your ignition cylinder module. Refer to the repair manual to get guidance on how to do this in a safe manner. 1. Make sure you check the Switch One of the most frequent ignition issues is a defective switch. It acts as an intermediary between two contacts, controlling when relays activate and deactivate. It is less likely to fail due to the fact that it does not channel the full power from devices like the starter. However it's still possible for the switch to become damaged or corroded. A malfunctioning switch is recognized by a slow time turning the key. This could be due to many things such as incorrectly inserting the key or deteriorating the mechanism over time. It's also commonplace for people to misplace their keys to their car with the keys of someone else, which can cause mechanical damage. If the switch isn't working, there are a few things you could try before calling a locksmith. First, you'll need to make sure that the battery is charged and that there aren't any other electrical issues that could be affecting the system. Also, you should check the voltage of each component to determine if it's supplying adequate power. Once you've completed these steps, it's now time to start troubleshooting. The ignition switch is easy to replace. It is connected to the ignition module, a round piece of metal that holds everything together. You'll need a flathead and something long enough to push the pin into. This can be anything from a paintbrush handle to a kabob skewer, but you should stay clear of anything that is brittle and break within the hole. If you're ready for the work, you'll need to take away any trim pieces covering the area around the ignition switch. After you've removed the trim pieces take off any screws that hold the switch in position. Then carefully pull it out. Depending on the model, you might also have to unplug the wires that connect to it. If you have a manual for your vehicle, this will tell you exactly how to do this. If the ignition switch isn't functioning it's recommended to replace it by professionals. It's difficult to replace the ignition switch without removing your steering column. This could lead to an unintentional deployment of airbags if you do it incorrectly. It is recommended to allow your locksmith to take care of this. 2. Check the Wire Your car may not start if it is difficult to turn the key or if it will not start. This could be due to any variety of components in the ignition system. It's crucial to understand how the ignition system functions to identify issues and make the appropriate repairs. The ignition switch is a low voltage multi-pole electrical switch which is operated by a key. It includes four positions “off”, “accessory”, “run” and the “lock”. If the switch is in the lock position (which typically has an indicator in red) the ignition circuit is live and it is not possible to start the engine. You can use a voltage meter to quickly test the ignition switch or coil. The voltmeter should read around 12.6 volts when the ignition switch is in the running position. If the voltage falls below that, it indicates there's an open circuit somewhere within the system. This could be at the solenoid, the battery or the ignition coil itself. Remove the electrical connector from the ignition switch to ensure no other components can interfere with your test. Set the voltmeter in the continuity or resistance modes and connect one lead on one of the terminals on the ignition switch. The other lead should go to the positive terminal on the battery. If the voltmeter reads “open” or does not detect any voltage, it is recommended to replace the switch. Use a new ignition key and high-quality ignition cylinder when replacing the switch to ensure your vehicle starts and runs correctly. When replacing the switch, make sure not to strike the pins of the ignition cylinder using your tools. In the event of a collision, they'll become stuck and the engine will not run. In certain vehicles, you'll need to remove the steering column and gear selector in order to access the ignition cylinder. This isn't easy and shouldn't be done unless you have an owner's manual that states it's safe to do this. Otherwise, serious damage to the steering column or shifting mechanism is likely. 3. Check the Cylinder If you have tried the battery, the wiring, and the ignition switch but still can't get your car to start it could be time to inspect the cylinder. The cylinder is the part that holds the key and is mechanically linked to the steering lock so that burglars won't be able to drive the car without it. You may be noticing that your key does not rotate if the cylinder is worn out. The pins in the cylinder could become stuck as they adapt to the shape of your key. This can cause your car to not start. The cylinder may also be sloppy. A tap with the tackhammer can aid. Be careful not to crush the springs in the cylinder and ensure that your key is correctly placed before tapping. If you have to move the key around before it will begin, this is another indication that your cylinder is been damaged. This is a bad sign, and it should be corrected right away, since it will only worsen over time. To check the cylinder, you'll need to disconnect your battery, and then remove the cover on your steering wheel until you're able to access the ignition module. You should then be able to pull out the old ignition switch and the metal ignition cylinder. If you don't have an extra ignition switch lying around, it's possible that you can take your original ignition switch and cylinder to a locksmith to reuse them as long as they are in good condition. After replacing the ignition switch and cylinder, make sure to reconnect the wiring to secure it, then reattach all covers and panels that you took off. 4. Check the Spark Plugs The spark plug is the last link in your ignition chain. When it breaks it will stop the engine from running. This could take the form of your car not starting at all, or may start but then run poorly. In either case, the cause is likely to be one of several factors that block or hinder electricity from jumping across the spark plug gap, which causes your engine's air and fuel mixture to run. Be sure to wear gloves and protective tools before working with your spark plugs. Spark plugs can be hot and cause serious injuries when you touch them with your naked skin. When a spark plug is bad, you might notice that the tip of the central electrode has a light gray or brown residue on it. The electrode could also be covered with a dark layer. These deposits or fouling can hinder high-voltage electrical currents from crossing the gap between the spark plug and starting an engine. If you suspect that your spark plugs may be the culprit, you could test them by remove them from the tube that is inside the ignition coil. You can do this by disconnecting the coil from the plug wire, and following the proper procedure for your car to remove any components that are covering the spark plugs. After removing the plugs, place them on a metal surface that is grounded. Then start car ignition barrel replacement . If they are good, you should see a strong blue spark extending across the gap in the middle of the central electrode. If you don't see a spark you have identified the problem. The next step is to go backwards through the ignition chain and test each part until the spark plugs stop functioning. It is important to keep in mind that all systems wear out and break over time and this is particularly applicable to ignition systems. Routine maintenance can help to reduce the time it takes to repair and avoid a major headache in the worst case.