Common Causes of Faulty Ignition Switches
Ignition switches are the first source of power to your car's accessory and engine. They also determine if the vehicle's keys are in the accessory on or off position.
Keep any extra keys, keepsakes and other items on a chain separate from the car key to avoid problems with the ignition switch. This will help reduce the stress on the cylinder of your car's key.
How the Ignition Switch Works
The ignition switch is at the core of your vehicle. It's the first thing you do as you prepare to start your car, and the last thing you would want to malfunction. It is therefore important to get the ignition switch repaired or replaced immediately if there are any signs of trouble.
The primary function of the ignition switch is to supply the power to other systems in your vehicle including the radio, accessories, and windows. The ignition switch also activates the engine and starter motor when the key is in the "on" position.
To allow the ignition system to work it must have spark that can ignite the air and fuel in the engine of your vehicle to begin. The ignition coil produces the spark by creating an electric field that surrounds the rotor while current passes through. As the rotor spins, the magnetic field builds up and the ignition spark is released. This spark could rotate the pistons of your engine, igniting them and triggering it.
Your ignition switch controls the electrical current that flows through the primary and secondary circuits of your ignition system. When the switch is set to the "on" position, the battery will send low voltage current through the primary windings of your ignition coil and then through the breaker points. This creates an electric field that could spin the rotor and spark the spark plugs in your car, which will then fire up the engine.
When the ignition switch is turned to "start" the primary and secondary circuits will be shut off. As the rotor and distributor cap terminals rotate, the electrical contact between them is broken and stops the secondary flow and closes the primary circuit. The breaker points are able to close and produce a spark at the spark plug which then ignites the engine in just a few seconds.
It is crucial to remember that the ignition switch is a delicate piece machinery and should not be put under any excessive force when inserting it or turning it. If you apply too much force, the switch can fail and you'll require an expert to remove it to make repairs.
Common Ignition Switch Problems
The ignition switch is the initial access to vehicle power, which is why it's vital to keep it in good working order. A malfunctioning switch can cause a variety of car problems that make it difficult for you to drive your car or use your favorite accessories. Understanding the most common causes of failures in ignition is a crucial first step towards finding and fixing your car's problems.
The most obvious indication of a problem with the ignition switch is if you are having difficulty turning the key to start your car. In most cases, this means that you have to move or attempt several times to get the key to turn. This is because of the wear and tear inside or other damage to the ignition switch, which could be caused by a variety of factors.
Heavy Keychains
When you insert the ignition key, a bulky keychain with a number of keys, key fobs, and other accessories could put additional strain on the switch. This could cause the switch to overheat and accelerate its internal wear and degradation. Extreme temperatures can adversely impact the materials and lubricants used in the ignition switch, speeding up its degrading process over time. Environmental contaminants and moisture may also affect the switches internal components. This can lead to poor connectivity.
Manufacturing Defects
Certain ignition switches have flaws or design flaws that could cause premature wear and damage. This can occur due to poor quality components, faulty assembly, or other factors.
A customer once brought their vehicle into our shop due to the fact that the radio and dashboard lights had stopped functioning. We discovered that the ignition switch was not longer supplied power to the accessories. This is a problem because the ignition switch should only provide power to the accessory position and crank position when it's switched on.
Another issue with the ignition switch is if the key gets stuck within it. This is a sign of a worn-out or damaged ignition switch that needs to be replaced. A professional locksmith will employ tools such as a piler or hacksaw blade to remove the ignition key.
Ignition Switch Replacement
The ignition switch transmits signals that activate a variety of critical automotive systems. It can cause your car to not start and affect other electrical components. You should replace it as soon as possible when you observe any indications that the key isn't functioning properly.
You can typically replace the switch by yourself, but you need to be very cautious. It's important to hire a professional to do this delicate task. You do not want to get stuck in traffic or cause an accident.
If your switch is not working, it could be due to a worn-out contact point or a bad connector. Heavy keys or a long keyring may also wear down the switch and cylinder eventually causing it to break off from the cylinder.
When the ignition switch fails you'll notice that it requires more force to turn the key and often nothing happens when you do. This is a sign that it's time to replace the ignition switch, however many people ignore it. G28 continue to try to move their keys around to start their vehicle.
Depending on the model and make of your vehicle, changing the ignition switch can be straightforward or complex. In the majority of cases technicians will remove the cover for the steering wheel and disconnect the ignition switch from the cylinder. They'll then remove the old switch and replace it in. The mechanic will then test the switch and then reconnect the electrical connections before closing.
Certain vehicles have an anti-theft system that requires a special key to activate it, so the switch must be programmed to accept a new key after the switch is replaced. This isn't the case with all cars, since older models can still be started by using an ordinary key when the ignition switch malfunctions. However, the majority of modern cars require a "chipped" key to start them, and the switch will need replacing when the key does too.
Ignition Switch Repair
The ignition switch is responsible of switching the electrical power on and off to the starter accessories, powertrain, and components of your vehicle. Because it is the primary line of communication for sending electricity to these parts, if the ignition switch fails, it can cause your car to lose power in a variety of locations. You should therefore pay attention to any signs that suggest your ignition switch might require repair or replacement.
If you're having difficulty turning the key in the ignition it's an indication that the ignition switch is malfunctioning. If you're having difficulty turning the key, the wafers within the ignition switch may be worn out. This could be caused by the use of the switch over time or environmental factors like dust, dirt, and corrosion.
Another problem that can be encountered is when your engine fails to start while you are driving. It is usually due to the ignition switch not being capable of providing the engine with enough power and this can be a hassle and even dangerous for drivers. It is recommended to visit your local auto repair shop as soon you discover any problems with your ignition switch or the locking cylinder.
Other symptoms that the ignition switch is malfunctioning include relays for the accessory that aren't working that is an indication that the switch isn't sending power to them. You may also notice the dashboard lights flickering.
If you think your ignition switch is defective take off the trim around the dash and the steering wheel. This will allow access to the ignition switch, which is mounted on a round module on the top of the steering column, or in the center console.
The screws that support the module must be removed and the wire connectors will need to be loosened with a screwdriver. Then, you can take out the old ignition switch and replace it with a new one. Before reassembling the car test the ignition switch by turning the key to ON and then START positions. Reconnect the battery and ensure that all the components are functioning.