How to Fix Car Ignition Problems
A car won't start unless the ignition switch transmits an electrical signal to the starter motor. Over time normal wear and tear can cause the switch to fail.
With the help of special tools, you can take off the steering column trim and gain access to the ignition cylinder module. Consult your repair manual for instructions on how to do this properly.
1. Check the Switch
One of the most frequently encountered ignition issues is a malfunctioning switch. It functions as a bridge between two contacts, and controls the relays' activation and deactivation. Since it doesn't transmit the full power of devices like the starter, it's a lighter component that's less likely to fail. However it's still possible for the switch to become damaged or corrosion-prone.
One sign of a damaged switch is the difficulty in turning the key. This can be caused by various reasons such as the wrong way to insert a key, or the mechanism being worn out over time. It's not common for people to mix keys with those of others. car key ignition replacement near me could cause mechanical damage.
If the switch isn't functioning, there are some things you can try before calling a locksmith. First, you must ensure that the battery is fully charged and there aren't any electrical issues in the system. You should also examine the voltage of every component to determine if it's providing enough power. After you've completed the above steps, you can begin troubleshooting.
The ignition switch is simple to replace. It is connected to the ignition module, which is a round piece of metal that connects everything. To replace it, you'll need a flathead screwdriver and something that is long enough to push the pin into. You can employ anything from a paintbrush, to a kabob stick, but avoid anything that is hard as it could break into the hole.
When you're ready to do the job, you'll need to take away any trim pieces that cover the area around the ignition switch. Once you've done this remove and loosen the screws that keep the switch in place then gently pull it out. Depending on the model, you may also have to unplug any wires connected to it. If you have an instruction manual for your vehicle it will explain exactly how to do it.
It is recommended to have the ignition switch replaced by professionals if it doesn't work. It's not easy to replace the ignition switch, without disabling your steering column. This could result in the unintentional airbag being deployed when you don't do it correctly. For this reason, it's often best to have your local locksmith handle this for you.
2. Check the Wiring
The car may not start if you cannot turn the key or it won't start. This could be due a number components in the ignition system. Understanding how the ignition system functions can help you spot problems and make the necessary repairs.
The ignition switch is an electrical switch that has multiple poles and is operated by the key. It has four positions including off, accessory, run and "lock." When the switch is locked (which is usually shown by an red light), the ignition circuit is active and it is not possible to start your car.
You can use a voltage meter to quickly test the ignition switch or ignition coil. When the ignition switch has been set to run at a certain voltage, the voltmeter should read about 12.6, If the voltage is below that it indicates that there is an open circuit somewhere within the system. This could be at the battery, the solenoid or the ignition coil itself.
Remove the electrical connector so that it doesn't interfere with the test. Set the voltmeter in the continuity or resistance modes and 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 voltage gauge reads "open" or doesn't register any voltage then it's time to replace the switch.
Use a new ignition key and a top-quality ignition cylinder when replacing the switch to ensure your vehicle is running and starts correctly. When replacing the switch, ensure not to strike the pins of the ignition cylinder with your tools. In the event of a collision, they'll get stuck and your engine won't run. You'll need to take off the steering wheel and gear selector in some vehicles to access the ignition cylinder. This isn't easy and isn't recommended until you have an owner’s guideline that states it's safe. If you don't then you could cause serious damage to your steering column and shift mechanism.
3. Check the Cylinder
If you've tried the battery, the wiring, and the ignition switch but still cannot start your car, it may be time to check the cylinder. The cylinder is the piece that holds the key. It is mechanically linked to the steering lock to ensure that burglars won't be able to drive the car without it.
If your cylinder is beginning to wear out, you may be noticing that your key isn't able to turn. The pins inside the cylinder can get stuck as they adapt to the shape of your key. This can cause your vehicle to not start. Or, the cylinder might be loose, but a tap with the small hammer from a tack can help to free it. Be careful not to crush the springs in the cylinder and ensure that the key is correctly inserted before tapping.
Another indication that your cylinder is failing is when you need to turn the key and test it in various positions before it starts. This is a sign of trouble and must be fixed immediately because it will get worse with time.
To examine the cylinder you'll have to disconnect your battery, and then remove the cover around your steering wheel until you are able to access the ignition module. You'll then be able to remove the old ignition switch and 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 and secure it and then reattach any covers or panels you removed.
4. Check the Spark Plugs
The spark plug is the ignition system's last link. If it fails it stops the engine from running. It can be that your vehicle won't start at all or it will run badly. In either case, the reason is likely to be one of a few factors that block or hinder electricity from crossing the spark plug gap, which ignites your engine's air and fuel mixture to start.
Be sure to use gloves and protective tools before working with your spark plugs. Spark plugs can be hot and cause serious injury if you touch them with bare skin.
You may notice a light gray or brown residue on the edge of the electrode if a spark plug is bad. It may also have a black layer on the sides of the electrode. These deposits, also known as fouling, may prevent high-voltage electricity from crossing the spark plug gap and igniting your engine.
If you suspect that your spark plugs might be the cause, you can test them if you remove them from their tube inside the ignition coil. This can be done by disconnection of the coil and the plug wire. After that, you'll have to follow the proper procedure for your vehicle in order to remove the components that surround the plugs. After you have removed the plugs you can place them on a grounded metal surface and crank the engine. If they're working you should see a strong blue spark crossing the gap in the middle of the central electrode.
If you don't see any spark, you've identified the issue. Next, you'll need to go backwards through the ignition chain and test each component until the spark plugs are no longer working. All systems wear out and eventually fail and this is especially relevant to ignition systems. But, regular maintenance can help slow the process down and avoid a major headache at the worst possible moment.