How to Fix Car Ignition Problems
The car won't begin unless the switch transmits an electrical signal to the starter. Normal wear and tear over time may cause the switch malfunction.
You can remove the trim on your steering column using specialized tools to gain access to your ignition cylinder module. Consult your repair manual for guidance on how to do this in a safe manner.
1. Check the Switch
A bad switch is one of the most common ignition issues. It controls the time when relays are activated and deactivated by acting as bridge. Because it isn't able to channel the full power of devices such as the starter, it's a less powerful component that's less likely fail. However it's still possible for the switch to be damaged or corrosion-prone.
One indication of a defective switch is a difficulty turning the key. This could be due to many factors that include the wrong way to insert a key, or the mechanism being worn out over time. It's not unusual for people to confuse their keys with keys from someone else's. This can cause mechanical damage.
If the switch isn't working there are a few things you could try before calling a locksmith. First, you'll want to ensure that the battery is charged and that there aren't any other electrical issues in the system. Also, you should examine the voltage of each component to make sure they're supplying enough power. Once you've completed these steps, you'll be able to begin troubleshooting.
Fortunately, the ignition switch is easy to replace. It is connected to the ignition module, a round piece of metal that connects everything. To replace it, you'll require a flathead screwdriver and something long enough to push the pin into. This could be anything from an artist's brush to a Kabob skewer, but you should stay clear of anything that is brittle and break inside the hole.
Remove any trimming pieces that overhang the switch when you are ready to get started. After removing the trim pieces, remove any screws holding the switch in place. Then, carefully take it off. Depending on the model you may have to cut off any cables connected to it. You can learn how to do this in the instruction manual for your vehicle.
If the ignition switch isn't functioning it is recommended to replace it by a professional. It's difficult to replace the ignition switch without disabling your steering column. This could lead to an unintentional airbag deployment when you don't do it correctly. Therefore, it's often best to have the locksmith in your area handle this for you.
2. Check the Wiring
Your car may not start if you cannot turn the key or if it will not start. This could be due to a number components in the ignition system. Understanding how the ignition system functions will help you identify problems and make the necessary repairs.
The ignition switch is an electric switch with multiple poles that is operated by the key. It has four positions that are off run, accessory, and "lock." If the switch is in the lock position (which usually has a red indicator) the ignition circuit is live and it's impossible to start the engine.
You can use a voltmeter to quickly test the ignition switch and ignition coil. The voltmeter should be reading around 12.6 volts when the ignition switch is in the running position. If the voltage is below that, there is an open circuit somewhere within the system. This could be at the battery, the solenoid or the ignition coil itself.
Disconnect the electrical connector from the ignition switch to ensure that there are no other components that could interfere with your test. Set the voltmeter to the resistance or continuity modes and place one lead onto one of the terminals on the ignition switch. The other leads should go to the positive terminal on the battery. If the voltmeter is "open" or fails to show any voltage, you must replace the switch.
Use a brand new ignition key and a high-quality ignition cylinder when replacing the switch to ensure your vehicle starts and runs correctly. When replacing the ignition switch, you must be careful not to hit the cylinder's pins on the ignition with your tools, or they'll get stuck and your engine won't start. In some vehicles, you'll have to remove the steering column and gear selector in order to access the ignition cylinder. This can be a challenge and isn't recommended until you have an owner's manual that states it's safe. Otherwise severe damage to the steering column and shifting mechanism is possible.
3. Check the Cylinder
If you've gone through the wiring, battery and ignition switch, but can't get your car to start, it could be time to look at the cylinder. The cylinder is the piece that holds the key and is mechanically linked to the steering lock so that a would-be burglar can't drive the car if it's not there.
If your cylinder has started to wear out, you could find that the key doesn't turn. The pins inside the cylinder can get stuck as they adjust to the shape of your key. This can cause your vehicle to not start. Alternatively, the cylinder may be shaky, but a tap with the small hammer from a tack can aid in releasing it. Be careful not to mix up the springs and make sure your key is properly inserted.
Another sign that your cylinder is going bad is when you have to turn the key and try multiple positions before it gets started. car ignition switch repair is a sign of trouble and should be corrected right away, since it will only get worse with time.
To test the cylinder, you'll need to disconnect your battery and remove the cover on your steering wheel until you are able to access the ignition module. The old ignition switch should be easy to remove, as should the cylinder made of steel. If you don't have a spare ignition switch lying around, it's 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 ignition switch and cylinder make sure to reconnect the wiring to secure it, then reattach all covers and panels that you took off.
4. Make sure you check the Spark Plugs
The spark plug is your ignition system's final link. The engine won't run when the spark plug is broken. It can be that your car will not start at all or will run badly. In either of these scenarios, it's likely that one of several factors are hindering or blocking electrical current from crossing spark plug gaps, which then ignites the air and fuel mixture in your engine.
Before you begin working on your spark plugs, make sure that you are working on a safe surface and using protective gloves and tools to prevent getting struck. Spark plugs can be very hot and could cause serious injuries if they are touched by hands without gloves.
When a spark plug is bad, you may observe that the edge of the electrode's central portion has some light brown or gray substance on it. The electrode could also be covered with a dark layer. These deposits, also known as corrosion, can prevent high-voltage electrical current from crossing the spark plug gap and sparking your engine.
If you suspect your spark plugs may be the culprit You can test them if you remove the plugs from their tube inside the ignition coil. You can do this by disconnecting the coil from the plug wire, and following the proper procedure for your car to remove components that cover the spark plugs. Once you have removed the plugs, you can place them on a grounded metal surface and turn the engine. If they're working you should be able to see a strong blue spark near the point of the central electrode.
If you don't see any spark, you've identified the problem. Next, you'll need to go backwards through your ignition chain and check each component until the spark plugs are no longer functioning. It is important to keep in mind that all systems wear out and break down over time, and this is especially the case with ignition systems. That said, routine maintenance can reduce the wear and tear and prevent a major problem at the worst moment.