15 Surprising Facts About Car Ignition Switch

15 Surprising Facts About Car Ignition Switch

Common Causes of Faulty Ignition Switches

Ignition switches are the first source of power to your car's accessories as well as the engine. They also determine if the key in your car is in the on, accessory, or off position.

Keep extra keys, keepsakes, and other items on a chain apart from the car key to avoid issues with the ignition switch. This will help reduce the stress on your car's key cylinder.

How the Ignition Switch works

The ignition switch is at the core of your car. The ignition switch is the first thing you touch to start your vehicle and you shouldn't want it to be damaged. This is why it is important to have your ignition switch repaired or replaced when you notice any signs of trouble, like difficulties getting started or a pulsing motor.

The basic function of the ignition switch is to supply the initial power to other systems in your vehicle, such as accessories, radio, and windows. The ignition switch is responsible for turning on the engine and starter motor when the key is turned to the "on' position.

The ignition system must work because it needs sparks to ignite fuel and air inside your car for it to start. The spark is generated by the ignition coil, which creates an electrical field around the rotor whenever current passes through it. The magnetic field is created as the rotor turns. This causes the ignition spark. This spark then turns the pistons in your engine, firing them up and allowing it to get going.

Your ignition switch controls the electrical current that runs through the secondary and primary circuits of your ignition system. When the switch is in the 'on' position, the battery is able to send low voltage current through the primary windings of your ignition coil and then through the points of the breaker. This creates a magnet field that could ignite the spark plugs, and spin the rotor.

When the ignition switch is turned on "start" the primary and secondary circuits will be shut down. The electrical contact between the terminals for the distributor cap and rotor break when they turn. This will stop the secondary flow and completes the circuit. This allows the breaker points to close and produce a spark at the spark plug, which then ignites the engine within a matter of seconds.

It is important to remember that the ignition switch is a delicate piece machinery and should not be subjected to any force that is too strong when inserting it or turning it. If you apply excessive pressure, the switch may break and you'll need to have a professional remove it to repair.

Common Ignition switch problems

The ignition switch is the initial access to vehicular power, which is why it's vital to ensure it's in good working condition. A damaged switch can trigger a wide variety of vehicle malfunctions that make it difficult to drive or use your favorite gadgets. Understanding the most common causes of ignition switch failure is the first step to finding and fixing your vehicle's problems.

A clear indication of a problem with the ignition switch is if you have difficulty turning the key to start your car. This could mean you need to jiggle the key or turn it many times. This is a result of the internal wear and tear or other damage to the ignition switch that can be caused by a variety.

Heavy Keychains

When you insert the ignition key, a bulky keychain with a number of keys, key fobs and other accessories can put extra stress on the switch. This can cause the ignition switch to overheat, which can accelerate its wear and degrading. Extreme temperatures can adversely affect the lubricants and materials used in the ignition switch, speeding up its breakdown over time. The environmental contaminants and moisture may also affect the switches internal components, which can lead to poor connectivity.

Manufacturing Defects

Certain ignition switches have flaws or design flaws which can lead to premature wear and damage. This could be due to subpar materials, improper assembly or other causes.

A customer once brought their vehicle to our shop due to the fact that the dashboard light and radio stopped working. We discovered that the ignition switch was no longer providing power to the accessories. Since the ignition switch is supposed to provide power to the crank and accessory positions when it's activated this could indicate an issue with the switch.

The key could also cause problems for the ignition switch if it is stuck in the. This is a sign of a worn-out or damaged ignition switch which needs to be replaced. A professional locksmith can assist remove the key from the ignition switch using tools like a piler or hacksaw blade.

Ignition Switch Replacement

The ignition switch sends signals that activate a variety of critical automotive systems. If it is damaged, it can stop your vehicle from starting and could affect other electrical components too. It is essential to replace it immediately if you spot any signs of trouble, like the key becoming difficult to turn or not turning at all.

You can replace the switch yourself, but be cautious. You'll be dealing with a very delicate piece of machinery and it's advisable to have professionals handle this task to ensure that you don't get trapped in traffic or causing a major accident.

If your switch isn't working, it may be due to a worn-out contact point or a bad connector. A long keyring or heavy keys can wear down the cylinder, causing the switch to disconnect from the cylinder.

If the ignition switch is malfunctioning you'll notice it requires more effort to turn the key and, often, nothing happens when you try to turn it. This is a sign it's time to replace the ignition switch, but many people don't bother. They continue to jiggle their keys to start their vehicle.

Based on the vehicle's model and make, changing the ignition switch can be straightforward or complex. In the majority of instances, a technician will remove the steering column cover and disconnect the switch from the cylinder. The technician will then remove the switch that was previously installed and replace it with the new one. The mechanic will then test the switch and reconnect the electrical connections prior to closing.

Some vehicles have an anti-theft feature that requires keys to turn the car on. The switch will then require reprogramming to accept the new key after it is replaced. It's worth noting that this doesn't apply to all vehicles, as older models can be started with an ordinary key if the ignition switch isn't functioning. However, modern cars require a special  key that is 'chipped' to start them, and the switch will need replacing when the key does too.

Repairing the ignition switch

The ignition switch is responsible to turn off and on electrical power supply to the starter and other components of the powertrain in your vehicle. Since it is the main line of communication for sending power to these components in the event that the ignition switch fails, it can cause your vehicle to lose power in a variety of locations. You should therefore be on the lookout for any indications that indicate your ignition switch may require replacement or repair.

When you have trouble turning the key in the ignition, it is a sign that your ignition switch is failing. If you are having trouble turning the key, the wafers within the ignition switch may be worn out. This can occur due to regular use or environmental factors like dust, dirt, or corrosion.

Another issue that is common is when your engine fails to start when you're driving. This is due to the ignition not being able to provide enough power to the engine. It can be a frustrating experience for drivers, and can be risky.  car ignition key replacement  is best to go to your local auto repair shop whenever you spot any issues with your ignition switch or lock cylinder.

Other signs that the ignition switch is going bad include the accessory relays not working this is a sign that the switch isn't able to send electricity to them. You might also notice that the lights on your dashboard are flickering.


If you suspect that your ignition switch is defective, remove the trim around the dash and the steering wheel. This will let you gain access to the ignition switch, which is mounted on a circular module at the top of the steering column, or in the center console.

The screws that hold the module need to be removed and the wire connectors need to be removed using the aid of a screwdriver. Then, you can remove the old ignition switch and replace it with a brand new one. Be sure to test it before reassembling everything, making sure that the switch is turned into the ON position and then to the START position. Re-connect the battery, and make sure that all the components are functioning.