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How to Fix Car Ignition Problems

The car won't start until the switch sends an electrical signal to the starter. Over time normal wear and tear may cause the switch to malfunction.

With the help of specialized tools, you can take off your steering column trim and access the ignition cylinder module. Check out your repair manual to learn how to do it right.

1. Check the Switch

A bad switch is one of the most frequent ignition problems. It functions as an intermediary between two contacts, controlling the relays' activation and deactivation. Because it doesn't harness the full power of devices such as the starter, it's a less powerful component that is less likely to fail. However, it's still possible for the switch to be damaged or damaged or corroded.

One sign of a damaged switch is the difficulty in turning the key. This can be caused by various factors that include not inserting the key correctly or the mechanism wearing out over time. It's also commonplace for people to mix up their keys to their car with those of another's, which could lead to mechanical damage.

Before contacting a locksmith, you might want to try a few things. First, you'll want to make sure that the battery is charged and that there aren't any other electrical issues that could be affecting the system. You should also verify the voltage of every component to make sure they're sufficient power. After you've completed these steps, it's now time to start troubleshooting.

The ignition switch is easy to replace. It's connected to the ignition cylinder, which is a round module that holds everything together. You'll need a flathead and a piece of material long enough for you to insert the pin. You can employ anything from a paintbrush to Kabob stick, but be careful of anything that is brittle, as it can break into the hole.

When you're ready to do the work, you'll need to remove any trim pieces covering the area around the ignition switch. Once you've done this remove and loosen the screws that hold the switch in place and then gently pull it out. Depending on the model you may have to cut off any cables connected to it. Find out how to do this in the manual of your vehicle.

If the ignition switch isn't functioning it is recommended to have it replaced by a professional. Replacing it can involve disabling the steering column which could result in unintentional airbag deployment if done improperly. It's best to allow your locksmith to take care of this.

2. Verify the Wire

Your car might not start if it is difficult to turn the key or it won't start. This could be due to a number components in the ignition system. It's crucial to understand how the ignition system works so that you can pinpoint issues and make the appropriate repairs.

The ignition switch is a low voltage multi-pole electrical switch that can be turned by the key. It has four positions including off run, accessory, and "lock." If the switch is in the lock position (which typically has an indicator in red), the ignition circuit is in operation and it's not possible to start the engine.

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

Remove the electrical connector from the ignition switch so that no other components interfere with the test. Set the voltmeter in the resistance or continuity modes and then place one lead onto one of the terminals on the ignition switch. The other lead should be connected to the positive terminal of the battery. If the voltmeter shows "open" or doesn't show any voltage then it's time to replace the switch.

When you're replacing the switch, be sure to use a new ignition cylinder and a top quality key cut to ensure that your vehicle will start and run correctly. When replacing the ignition switch, you must be cautious not to touch the ignition cylinder pins with your tools or they'll get stuck and your engine won't be able to start. In some vehicles, you'll need to remove the steering column and gear selector to access the ignition cylinder. This isn't easy and is not recommended unless you have an owner's manual that indicates that it is safe to do so. Otherwise severe damage to the steering column and shifting mechanism is likely.

3. Check the Cylinder

If you've sifted through the battery, wiring and ignition switch, but cannot get your car ignition switch to start, it might be time to check the cylinder. It's the component that holds your key and is connected to the lock on the steering wheel so a would-be thief can't control the car without the key.

You might be noticing that your key does not rotate if the cylinder is worn out. Sometimes, the pins in the cylinder become stuck when they adjust to the shape of your key, which may cause your car not to start. The cylinder may also be sloppy. A tap using the tackhammer can help. Be sure not to mix up the springs and ensure that the key is correctly placed.

If you are required to move the key around before it will begin, this is another indication that your cylinder has gone bad. This is a negative sign, and it must be fixed immediately because it will worsen over time.

To test the cylinder, you will need to remove the cover for the steering wheel and disconnect the battery. You'll then be able to remove the old ignition switch as well as the metal ignition cylinder. If you don't own a spare switch, you may be able to bring the original ignition cylinder and switch to a locksmith for reuse as long as they're in good working order. After replacing the ignition switch and cylinder, make sure to reconnect the wiring to secure it, then reattach the panels and covers that you removed.

4. Make sure you check the Spark Plugs

The spark plug is the ignition system's last link. When it is damaged it will stop the engine from running. It could be that your car won't start at all, or it will run poorly. In either case, it is likely that one of several things are hindering or preventing electricity from jumping across spark plug gaps, which in turn ignites the air and fuel mixture inside your engine.

Make sure you wear protective tools and gloves before you begin working with your spark plugs. Spark plugs can be extremely hot and could cause serious injuries if they are touched by hands without gloves.

There may be a slight brown or gray residue on the tip of the electrode when a spark plug is bad. The electrode may also have a dark coating. These deposits or fouling can stop high-voltage electrical current from jumping across the gap of your spark plug, igniting an engine.

If you believe that your spark plugs are to blame, you can test them by removing them from their tube inside the ignition coil. This can be done by disconnecting the coil from the plug wire and following the correct procedure for your vehicle to remove the components that cover the spark plugs. After you have removed the plugs, place them on a metal surface that is grounded and start the engine. If they're good, you should see a bright blue spark across the gap between the tip of the central electrode.

If you don't see a spark, you've found the issue. Next, you'll need to go backwards through your ignition chain and test each component until the spark plugs stop working. All systems will wear out and eventually fail This is especially applicable to ignition systems. Regular maintenance can slow down the process and prevent a major headache in the worst case.