How to Fix Car Ignition Problems

The car won't start until the ignition switch transmits an electrical signal to the starter motor. Over time normal wear and tear can cause the switch to fail.

You can remove the steering column trim using specialized tools to gain access to your ignition cylinder module. Refer to your repair manual for instructions on how to do this correctly.

1. Check the Switch

One of the most frequently encountered ignition problems is a bad switch. It controls the moment relays are activated, and deactivated through the use of bridge. Because it isn't able to transmit the full power of devices such as the starter, it's a less powerful component that's less likely fail. It is still susceptible to being damaged or corrosion-prone.

One sign of a bad switch is a difficulty turning the key. This could be due to many factors such as not inserting the correct key correctly or the mechanism being worn out over time. It's not uncommon to see people mix keys with those of others. This can cause mechanical damage.

If the switch isn't functioning, there are some things you can try before calling a locksmith. First, you'll want to ensure that the battery is fully charged and that there aren't any other electrical issues in the system. Also, you should check the voltage of each component to see if they're capable of supplying enough power. Once you've completed these steps, it's now time to start troubleshooting.

Fortunately, the ignition switch is easy to replace. It's connected to the ignition cylinder, a round module that holds everything together. You'll need to use an elongated flathead as well as something long enough for you to insert the pin. You can use anything from a paintbrush to a Kabob stick, but you should avoid anything that is brittle, as it can cause damage to the hole.

When you're ready to do the work, you'll need to take away any trim pieces that cover the area around the ignition switch. Once you've done this take off and loosen any screws that hold the switch in place then gently remove it. Depending on the model, you might need to disconnect any cables that connect to it. If you have a manual for the vehicle you own and model, it will show you exactly how to do this.

It's best to get the ignition switch replaced by an expert if it doesn't work. It can be difficult to replace the ignition switch without removing your steering column. This could result in the unintentional airbag deployment if you do it incorrectly. Therefore, it's often best to have your local locksmith handle this for you.

2. Check the Wire

If you are unable to turn the key in the ignition or your car won't start, your issue could be due to any of the components in your car's ignition system. Understanding how the ignition system functions will help you determine the cause of the problem and make the correct 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". When the switch is locked (which is typically marked by an red light), the ignition circuit is in operation and it is impossible to start your car.

You can use a voltage meter to quickly test the ignition switch or ignition coil. The voltmeter should read approximately 12.6 volts when the ignition switch is in the running position. If the voltage falls below that, it means there's an open circuit somewhere within the system. This could be at the solenoid, the battery or at the ignition coil itself.

Connect the electrical connector to the ignition switch to ensure that no other components interfere with your test. Then, set the voltmeter to the resistance or continuity mode and place one lead on one of the terminals on the ignition switch. The other leads should go to the positive terminal of the battery. If the voltmeter shows "open" or does not show any voltage, you should replace the switch.

If you're replacing the switch, make certain to use a new ignition cylinder as well as a high quality key cut to ensure that your vehicle will run and start correctly. When replacing the ignition switch, you must be cautious not to touch the cylinder's pins on the ignition with your tools or they'll become stuck and your engine won't start. You'll need to remove the steering wheel and gear selector on some vehicles to access the ignition cylinder. This can be difficult and is not recommended unless you have an owner's manual that indicates that it is safe to do so. Otherwise serious damage to the steering column or shifting mechanism is likely.

3. Check the Cylinder

If you've worked your way through the battery, wiring and ignition switch and still can't get your car to start, it could be time to check the cylinder. The cylinder is the component which holds the key and is mechanically linked to the steering lock to ensure that a would-be burglar can't drive the fix car ignition if it's not there.

If your cylinder is beginning to wear out, you could be noticing that your key isn't able to turn. Sometimes, the pins in the cylinder are stuck as they adapt to the shape of your key, which may cause your car not to start. The cylinder could also be loose and a tap using a small tack hammer can help to free it. Be sure not to mix up the springs and ensure that the key is correctly inserted.

Another indication that your cylinder is in trouble is when you have to move the key around and try different positions before it starts. This is a sign of trouble and needs to be fixed immediately, as it will only get worse with time.

To check the cylinder, you'll have to disconnect your battery and remove the cover around your steering wheel until you're able to access the ignition module. The old ignition switch should be simple to take off, as will the metal ignition cylinder. 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 ignition switch and cylinder ensure that you reconnect the wiring, secure it and reattach all covers and panels that you removed.

4. Check Spark Plugs

The spark plug is your ignition system's last link. The engine won't run if the spark plug breaks. It can be that your car ignition barrel replacement won't start at all or will run poorly. In either case, it's likely that one or more factors are hindering or blocking electricity from jumping across spark plug gaps, which in turn ignites the air and fuel mixture in your engine.

Be sure to use gloves and protective tools before working with your spark plugs. Spark plugs can be very hot and can cause serious injuries if handled with hands that are not protected.

If a spark plug goes bad, you might observe that the edge of the electrode's central portion has a light gray or brown residue on it. The electrode could also be covered with an opaque coating. These deposits or a build-up of fouling could stop high-voltage electrical current from jumping across the gap of your spark plug, igniting an engine.

If you think that your spark plugs could be at fault, you can test them by removing them from their tube 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 the components that cover the spark plugs. After removing the plugs, place them on a surface that is grounded, and start the engine. If they're working, you should be able to see a strong blue spark at the point of the central electrode.

If you don't see a spark, you've found the issue. The next step is to go backwards through the ignition chain and check each component until the spark plugs stop working. All systems will get older and eventually break This is especially applicable to ignition systems. Regular maintenance can reduce the time it takes to repair and prevent an issue at the worst time.