How to
Fix Car Ignition Problems
A car won't start unless the ignition switch transmits an electrical signal to the starter motor. Normal wear and tear over time may cause the switch malfunction.
Utilizing specially designed tools, you are able to remove the trim on your steering column and access the ignition cylinder module. Check out your repair manual to learn how to do it correctly.
1. Make sure you check the Switch
A malfunctioning switch is one of the most common ignition issues. It functions as bridge between two contacts, controlling the relays' activation and deactivation. It is less likely to fail because it does not channel the full power of devices like the starter. However it's still possible for the switch to get damaged or corrosion-prone.
One sign of a bad switch is difficulty turning the key. This can be caused by a variety of things that include incorrectly inserting the key or the mechanism wearing out over time. It's not unusual to see people mix keys with someone else's. This could cause mechanical damage.
If the switch isn't working, there are a few things you can try before calling a
auto locksmith ignition replacement. First, you must ensure that the battery is fully charged and that there are no electrical issues in the system. It is also important to test the voltage of each component to determine if it's supplying adequate power. After you've completed these steps, it's time to start troubleshooting.
Fortunately the ignition switch is easy to replace. It's connected to the ignition cylinder, a round module that connects everything. To replace it, you'll need a flathead screwdriver and something long enough to press the pin into. You can employ anything from a paintbrush to a Kabob stick, but be careful of anything brittle as it could cause damage to the hole.
Remove any trimming pieces that overhang the switch when you're ready to work. After you've removed the trim pieces remove any screws holding the switch in position. Then, carefully pull it out. Depending on the model, you may also have to unplug any wires connected to it. If you have a manual for the vehicle you own and model, it will show you exactly how to do this.
It is best to have the ignition switch replaced by a professional in the event that it isn't working. The replacement process involves turning off the steering column, which could trigger an unintentional airbag deployment if done improperly. It is recommended to let your local locksmith take care of this.
2. Check the Wiring
Your car might not start if you cannot turn the key or if it will not start. This could be due a number components in the ignition system. Understanding how the ignition system works can help you spot problems and make the necessary repairs.
The ignition switch is a low voltage multi-pole electrical switch that can be operated by a key. It includes four positions "off", "accessory", "run" and the "lock". If the switch is locked (which is usually marked by the red light) the ignition circuit is in operation and it is inaccessible to start your vehicle.
To determine whether the ignition switch damaged or if the ignition coil itself is faulty, you'll need to do a quick electrical test with the help of a Voltmeter. When the ignition switch is running, the voltmeter should show about 12.6, If the voltage falls below that, there is an open circuit somewhere within the system. This could be at the solenoid, the battery or at the ignition coil itself.
Connect the electrical connector to ensure that it doesn't interfere with the test. Set the voltmeter to the continuity or resistance modes and connect one lead onto one of the terminals of the ignition switch. The other lead should be connected to the positive terminal of the battery. If the voltmeter reads "open" or does not show any voltage, you must replace the switch.
When replacing the switch, be sure to use a brand new ignition cylinder as well as a high quality key cut to ensure that your car will start and run properly. When replacing the ignition switch, be careful not to strike the pins of the ignition cylinder with your tools or they'll become stuck and your engine won't be able to start. You'll have to take off the steering wheel as well as the gear selector on some vehicles to access the ignition cylinder. This isn't easy, and it is not recommended until you have a vehicle's owner's manual that states it's safe. If you do not, it is possible to cause irreparable damage to your steering column and shift mechanism.
3. Check the Cylinder
If you've sifted through the battery, wiring and ignition switch but can't get your car to start, it might be time to check the cylinder. The cylinder is the part that holds the key. It is mechanically linked to the steering lock so that burglars won't be able to drive the car without it.
If your cylinder has started to wear out, you could be noticing that your key isn't able to turn. The pins in the cylinder may become stuck as they adjust to the shape of your key. This could cause your car to not start. The cylinder could also be loose. A tap with a small tackhammer will aid. Be sure not to mix with the springs and make sure your key is properly inserted.
If you are required to jiggle and move the key before it can begin, it is a indication that your cylinder is become damaged. This is a bad indication and should be addressed immediately, as it can only get worse over time.
To test the cylinder, you'll need to unplug your battery, and then remove the cover on your steering wheel until you're able to access the ignition module. The old ignition switch should be simple to remove, as should the cylinder made of steel. If you don't have a spare ignition switch lying around, it's likely possible that you can take your original ignition switch and cylinder to a locksmith to reuse them, as long as they're 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 final link in your
ignition and key replacement system chain. The engine cannot run in the event that the spark plug fails. This can take the form of your car not running at all, or it may start but not run well. In either case, it is likely that one or more factors are hindering or blocking electricity from jumping across spark plug gaps, which ignites the mixture of fuel and air within your engine.
Before you begin working on your spark plugs, be sure that you work on a safe surface and employing protective gloves and tools to keep from being hit with. Spark plugs can get very hot and can cause serious injuries if handled with hands that are not protected.
If a spark plug goes bad, you might be able to see that the top of the central electrode has some light brown or gray residue on it. It may also have a black layer on the side of the electrode. These deposits or fouling can hinder high-voltage electrical currents from jumping across the gap of your spark plug, igniting an engine.
If you suspect that your spark plugs are to blame you can test them by removing the plugs from their tube in the ignition coil. This can be accomplished by disconnecting the coil as well as 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 you have removed the plugs, place them on a surface that is grounded, and begin the engine. If they're good you should be able to see a strong blue spark extending across the gap in the middle of the central electrode.
If you don't see a spark, you've identified the problem. The next step is to work back through the ignition system chain, testing each component until you find out what's hindering the spark plugs from doing their job.