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How to fix car ignition (stes.tyc.edu.tw) Problems

A car won't start unless the ignition switch transmits an electrical signal to the starter motor. Normal wear and tear over time can cause the switch to malfunction.

You can remove the steering column trim using specialized tools to gain access to the ignition cylinder module. Consult your repair manual to learn how to do it right.

1. Check the Switch

A bad switch is among the most frequently encountered ignition issues. It acts as a bridge between two contacts, regulating the relays' activation and deactivation. It is less likely to fail due to the fact that it doesn't channel full power of devices like the starter. However it's still possible for the switch to get damaged or corrosion-prone.

A defective switch can be identified by a difficulty turning the key. This can be caused by many factors that include not inserting the correct key correctly or the mechanism being worn out over time. It's also common for people to mix up their keys to their car with those of the keys of someone else, which can result in mechanical damage.

If the switch isn't working, there are some things you can try before calling a locksmith. You'll first want to ensure that the battery is fully charged and that there are no electrical issues within the system. It is also important to check the voltage of every component to ensure they are providing enough power. After you've completed the above steps, you can begin troubleshooting.

The ignition switch is simple to replace. It is connected to the ignition module, a round component that holds everything together. You'll need to use an elongated flathead as well as something that is long enough to insert the pin. This could be anything from paintbrush handles to Kabob skewer. However, it is best to avoid anything that is brittle and break within the hole.

Remove any trim pieces that are covering the area around the switch once you're ready to work. After that, loosen and remove any screws that are holding the switch in place then carefully pull it out. Depending on the model, you may be required to disconnect the wires that connect to it. You can learn how to do it in the instruction manual for your vehicle.

If the ignition switch isn't functioning it's recommended to have it replaced by an expert. It's difficult to replace the ignition switch, without disabling your steering column. This could result in an unintentional airbag being deployed if you do it incorrectly. It's best to allow your locksmith to handle this.

2. Check the Wiring

Your car might not start if it is difficult to turn the key or it won't start. This could be due to a variety of components in the ignition system. It is important to know how the ignition system works to be able to spot issues and make the appropriate repairs.

The ignition switch is an electric switch that has multiple poles and is controlled by the key. It includes four positions "off", "accessory", "run" and the "lock". When the switch is in the lock position (which usually has the red indicator), the ignition circuit is in operation and it's not possible to start the engine.

To determine whether the ignition switch bad or if the ignition coil is faulty, you'll must conduct a quick electrical test with an voltmeter. The voltmeter should read approximately 12.6 volts when the ignition switch is in the running position. If the voltage falls below that, there is an open circuit within the system. This could be at the battery, the solenoid or at the ignition coil itself.

Connect the electrical connector to the ignition switch to ensure that no other components can interfere with the test. Then you should set the voltmeter in the continuity or resistance mode and put one lead on one of the ignition switch's terminals. The other lead should go to the positive terminal of the battery. If the voltmeter shows "open" or does not register any voltage, it is recommended to replace the switch.

If you're replacing the switch, be certain to use a new ignition cylinder and a top quality key cut to ensure that your car will run and start correctly. When you replace the switch, make sure not to touch the pins of the ignition cylinder with your tools. In the event of a collision, they'll get stuck and the engine won't be able to run. In some vehicles, you'll need to remove the steering column and gear selector to access the ignition cylinder. This can be difficult, and it is not recommended until you have an owner's guideline that states it's safe. Otherwise serious damage to the steering column or shifting mechanism is possible.

3. Check the Cylinder

If you've gone through the battery, wiring and ignition switch, but can't get your car to start, it may be time to look at the cylinder. The cylinder is the part that holds the key and is mechanically attached to the steering lock so that a would-be burglar can't drive the car without it.

You may be noticing that your key does not turn if the cylinder is worn out. Sometimes, the pins within the cylinder become stuck when they adjust to the shape of your key, which could cause your car not to start. Or, the cylinder might be shaky, but a tap with the tack hammer may help to free it. Just be careful not to jumble the springs inside and ensure that your key is correctly placed before tapping.

Another sign that your cylinder is in trouble is if you have to turn the key and try multiple positions before it gets started. This is a bad sign, and it must be addressed immediately as it will only get worse with time.

To check the cylinder you will need to remove the steering wheel cover and disconnect the battery. The old ignition switch should be easy to remove, as well as the cylinder made of steel. If you don't have an extra ignition switch lying around, it's likely that you could take your original ignition switch and the cylinder to a locksmith in order to reuse them, as long as they are in good condition. After replacing the switch and cylinder, ensure that you reconnect the wiring harness and secure it and reattach any covers, or panels you removed.

4. Check the Spark Plugs

The spark plug is the final link in your ignition system chain. The engine won't start when the spark plug is broken. It could be in the form of your car not starting at all, or may start but then run poorly. In either case, the reason is likely to be one of several things that hinder or prevent electricity from crossing the spark plug gap which causes your engine's air and fuel mixture to start.

Before you begin working on your spark plugs, be sure that you work on a safe surface, using protective gloves and tools to keep from getting hit with. Spark plugs can get very hot and cause serious injuries if touched by hands without gloves.

You may notice a light gray or brown fleck on the tip of the electrode when a spark plug is bad. It may also have a black layer on the sides of the electrode. These deposits, or corrosion, can prevent high-voltage electricity from jumping across the spark plug gap and igniting your engine.

If you suspect that your spark plugs may be the culprit You can test them by having them remove them from the tube that is inside the ignition coil. This can be accomplished by disconnecting the coil as well as the plug wire. After that, you'll need to follow the correct procedure for your car to remove the components that cover the plugs. After removing the plugs, place them on a surface that is grounded. Then begin the engine. If they're working, you should see a bright blue spark extending across the gap in the middle of the central electrode.

If you don't detect a spark, you've identified the problem. The next step is to go back through the ignition chain, testing each component until you discover what's blocking the spark plugs from doing their job. It is important to keep in mind that all systems wear out and break down with time, and this is especially applicable to ignition systems. Routine maintenance can help to reduce the time it takes to repair ignition lock cylinder and avoid a major headache in the worst case.