How to Fix Car Ignition Problems
The car will not start unless the switch transmits an electrical signal to the starter. Normal wear and tear over time could result in the switch not functioning properly.
You can remove the steering column trim with special tools to gain access to the ignition cylinder module. Refer to your repair manual for guidance on how to do this in a safe manner.
1. Make sure to check the Switch
A malfunctioning switch is among the most common ignition issues. It functions as a bridge between two contacts, controlling when relays activate and deactivate. Since it doesn't channel the full power of devices like 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 corrosion-prone.
One sign of a damaged switch is the difficulty in turning the key. This could be due to various factors that include improperly inserting the key, or the mechanism wearing out over time. It's not unusual for people to mix their keys up with those of others. This can cause mechanical damage.
Before contacting a locksmith, you might want to try a few things. First, make sure that the battery is fully charged and there aren't any electrical issues within the system. You should also check the voltage of every component to ensure that they are providing enough power. After you've completed the above steps, you'll be able to begin troubleshooting.
Luckily, the ignition switch is pretty simple to replace. It's connected to the ignition cylinder, a round module that holds everything together. To replace it, you'll need an flathead screwdriver as well as 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 hard as it could be broken into the hole.
Once you're ready to complete the work, you'll have 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 hold the switch in place and then carefully pull it out. Depending on the model, you might need to disconnect any cables connected to it. You can find out how to do it in the manual of your vehicle.
It is recommended to have the ignition switch replaced by a professional when it's not working. The replacement process involves disabling the steering column which could trigger an unintentional airbag deployment if it's done improperly. It is best to allow your locksmith to handle this.
2. Verify the Wire
Your car may not start if it is difficult to turn the ignition key or it will not start. This could be due to any variety of components in the ignition system. Understanding how the ignition system functions can help you spot problems and make the appropriate repairs.
The ignition switch is an electric switch with multiple poles that is operated by a key. It has four positions including off run, accessory, and "lock." If the switch is locked (which is typically indicated by the red light), the ignition circuit is active and it is impossible to start your vehicle.
You can use a voltmeter quickly test the ignition switch and ignition coil. If the ignition switch is set to run and the voltmeter is reading about 12.6, If the voltage drops below that, it indicates there's an open circuit somewhere in the system. This could be at the solenoid, the battery or the ignition coil itself.
Remove the electrical connector from the ignition switch to ensure that no other components interfere with your test. Set the voltmeter to the continuity or resistance modes and place one lead onto one of the terminals on the ignition switch. The other leads should go to the positive terminal of the battery. If the voltmeter shows "open" or does not show any voltage, you must replace the switch.
Make sure you use a new ignition key and a high-quality ignition cylinder when replacing the switch to ensure your vehicle starts and runs correctly. When replacing the switch, make sure not to hit the pins of the ignition cylinder using your tools. In the event of a collision, they'll get stuck and the engine won't run. You'll need to remove the steering wheel and gear selector in some vehicles to access the ignition cylinder. This can be difficult and should not be done unless you have an owner's manual that indicates it's safe to do so. Otherwise serious damage to the steering column or shifting mechanism is possible.
3. Check the Cylinder
If you've tried the battery, the wiring, and the ignition switch, but still can't start your car, it may be time to inspect the cylinder. It's the part that holds your key, and is mechanically connected to the lock on the steering wheel to ensure that thieves can't control the car without a key.
You might observe that your key will not turn if the cylinder has worn out. Sometimes, the pins in the cylinder are stuck as they adapt to the shape of the key, which could cause your car not to start. The cylinder might also be loose. Tapping it with the small tackhammer may aid. Be careful not to crush the springs in the cylinder and ensure that your key is properly installed prior to tapping.
Another indication that your cylinder is going bad is when you have to turn the key and try different positions before it begins. This is a negative sign, and it should be corrected right away because it will get worse over time.
To check the cylinder, you'll need to unplug your battery and remove the cover around your steering wheel until you can access the ignition module. The old ignition switch should be simple to remove, as well as the cylinder made of steel. If you don't have a spare ignition switch lying around, it's likely that you could take your original ignition switch and cylinder to a locksmith to reuse them, as long as they're in good condition. After replacing the ignition switch and cylinder, make sure to reconnect the wiring to secure it, then reattach the covers and panels you took off.
4. Check the Spark Plugs
The spark plug is the final link in your ignition system chain. The engine won't run when the spark plug is broken. It could be that your vehicle won't start at all or will run poorly. In either case, it is likely that one or more things are hindering or preventing electrical current from crossing spark plug gaps, which then ignites the fuel mixture and air in your engine.
Make sure you wear gloves and protective tools before you begin working with your spark plugs. Spark plugs are hot and could cause serious injuries when touched with your skin.
You may notice a light brown or gray residue on the top of the electrode if the spark plug is defective. The electrode could also be covered with an opaque coating. These deposits or fouling can prevent high-voltage electrical current from crossing the gap between your spark plug and igniting an engine.
If you believe that your spark plugs are to blame you can test them by taking them from their tube in the ignition coil. This can be done by disconnecting the coil and the plug wire. Then, you will be required to follow the correct procedure for your vehicle to take off the components that are covering the plugs. After removing the plugs place them on a metal surface that is grounded and begin the engine. If they're working, you should be able to see a strong blue spark across the gap in the middle of the central electrode.
If you do not see a spark you have discovered the problem. The next step is to work back through the ignition system chain, testing each part until you find out what's blocking the spark plugs from performing their job. G28 wear out and eventually break, and this is particularly relevant to ignition systems. However, regular maintenance can help to slow down the process and avoid a big headache at the worst time.