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How to Fix Car Ignition Problems

The car won't start unless the switch transmits an electrical signal to the starter. Over time normal wear and tear could cause the switch to malfunction.

Using special tools, you are able to remove your steering column trim and access the ignition cylinder module. Consult your repair manual to learn how to do it correctly.

1. Check the Switch

A malfunctioning switch is one of the most common ignition issues. It functions as an intermediary between two contacts, and controls the relays' activation and deactivation. 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. However, it's still possible for the switch to get damaged or corrosion-prone.

One sign of a damaged switch is the difficulty in turning the key. This can be caused by various factors, including incorrectly inserting the key or the mechanism wearing out over time. It's not unusual for people to mix keys with keys from someone else's. This can result in mechanical damage.

If the switch isn't functioning, there are a few things you could try before calling a locksmith. First, make sure the battery is fully charged and that there are no other electrical issues that could be affecting the system. It is also important to verify the voltage of every component to make sure they're sufficient power. After you've completed these steps, it's time to start troubleshooting.

The ignition switch is simple to replace. It is connected to the ignition module, a round piece of metal that holds everything together. To replace it, you'll need a flathead screwdriver and something long enough to push the pin into. You can employ anything from a paintbrush to a Kabob stick, but be careful of anything that is brittle, as it can be broken into the hole.

Remove any trim pieces that cover the area around the switch once you're ready to go. After removing the trim pieces, take off any screws that hold the switch in place. Then, gently take it off. Depending on the model, you may need to disconnect any cables that connect to it. If you have an instruction manual for your vehicle it will explain exactly how to do it.

It is best to have the ignition switch replaced by a professional if it doesn't work. The replacement process involves disabling the steering column which may trigger unintentional airbag deployment if done incorrectly. This is why it is recommended to let your local locksmith handle this for you.

2. Check the Wiring

Your car may not start if you cannot turn the ignition key or it isn't starting. This could be due a number components in the ignition system. Understanding how the ignition system functions will help you identify problems and make the correct repairs.

The ignition switch is a low voltage multi-pole electrical switch that is turned by the key. It has four positions: off run, accessory, and "lock." If the switch is locked (which is usually indicated by the red light), the ignition circuit is in operation and it is inaccessible to start your car.

You can use a voltmeter to quickly test the ignition switch and ignition coil. The voltmeter should read approximately 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 battery, the solenoid or even the ignition coil itself.

Disconnect the electrical connector from the ignition switch so that no other components interfere with your test. Set the voltmeter on the resistance or continuity modes and place one lead onto 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 fails to detect any voltage, you must replace the switch.

When changing the switch, make sure to use a brand new ignition cylinder and a good quality key cut to ensure that your vehicle will run and start correctly. When you replace the switch, ensure not to touch the pins of the cylinder's ignition with your tools. Otherwise, locksmith ignition replacement cost 'll become stuck and the engine won't run. In certain vehicles, you'll have to remove the steering column and the gear selector to access the ignition cylinder. This can be a challenge and isn't recommended until you have an owner's guideline that states it's safe. Otherwise severe damage to the steering column or shifting mechanism is possible.

3. Check the Cylinder

If you have tried the battery, the wiring and the ignition switch but still cannot get your car started, it may be time to inspect the cylinder. The cylinder is the component that holds the key. It is mechanically connected to the steering lock so that a would-be burglar can't drive the car without it.

You might be noticing that your key does not turn if the cylinder is worn out. The pins in the cylinder could become stuck as they adjust to your key's shape. This could cause your car to not start. The cylinder may also be sloppy. Tapping it with the tackhammer can aid. Be careful not to mix up the springs and ensure that the key is properly inserted.

Another indication that your cylinder is in trouble is if you have to move the key around and try multiple positions before it gets started. This is a sign of trouble and should be corrected immediately, as it can only get worse with time.

To examine the cylinder, you will need to remove the cover for the steering wheel and disconnect the battery. The old ignition switch should be easy to take off, as will the metal ignition cylinder. If you don't have an additional ignition switch 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 be sure to reconnect the wiring harness, secure it in place and then reattach any covers or panels that you have removed.

4. Check the Spark Plugs

The spark plug is the ignition system's final link. When it is damaged it will stop the engine from running. It can be that your car will not start at all or it will run badly. In either case, it's likely that one of several things are hindering or preventing the flow of electricity across spark plug gaps, which then ignites the air and fuel mixture inside your engine.

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

You might notice a light gray or brown fleck on the tip of the electrode when the spark plug is defective. It could also have a black layer on the side of the electrode. These deposits, also known as fouling, may prevent high-voltage electricity from crossing the spark plug gap and sparking your engine.

If you suspect your spark plugs might be the culprit you can test them by having them remove them from their tube inside the ignition coil. This can be accomplished by disconnecting the coil as well as the plug wire. Then, you will have to follow the proper procedure for your vehicle in order to take off the components that are covering the plugs. Once you have removed the plugs, you can place them on a grounded metal surface and turn the engine. If they're good you should see a bright blue spark extending across the gap at the tip of the central electrode.





If you do not see a spark, you've found the issue. The next step is to go backwards through the chain of ignition and test each part until the spark plugs are no longer functioning. Every system will wear out and eventually break This is especially true for ignition systems. But, regular maintenance can to slow down the process and prevent a major headache at the worst possible time.