How to Repair an Ignition Lock Cylinder
If your car's ignition key will not turn, it's time to replace the cylinder for ignition lock. Contrary to the switch that is the electrical part of the ignition system that sends power to your vehicle's engine The lock cylinder is the mechanical tumbler your key is able to slide into.
Over time, "wafers" can break or wear out. WD-40 and graphite can temporarily resolve the issue however, replacing the tumblers is the only solution.
Removing the steering column
Modern cars don't have steering column locks. Instead, they utilize keys that can be used to start the vehicle by pressing and turning a switch on the dash panel. This newer method is simpler and more efficient than the old lock cylinder method. However, there are a few older cars that still utilize the traditional ignition lock cylinder. If this component fails, it may be required to replace it in order to get the car started. This is a task that should be left to professionals.
Using a screwdriver, remove the screws that hold the trim panels that surround the upper and lower steering column. This will allow you access to the area around the steering column.
On the side of the column closest to the driver, you'll see an Allen head bolt that pins the wiper/signal assembly in place. Unscrew this bolt and place it aside. Depending on the year of your car, you might have 3 or 4 small screws with flat heads that hold the plastic cover over the turn signal switch. Remove these screws and place them aside.
To access the lock cylinder you will need to take off the signal/wiper unit. This requires the use of a specially designed tool or perform the task using the help of a piece of metal, such as a cold chisel. A locksmith can also use an instrument to remove bolts.
If you can't insert the key into the ignition switch the lock cylinder might be stuck. You can either contact an locksmith or insert the key into the ignition switch and then move it to the ACC to release the pin on the lock cylinder.
A locksmith can employ a shear tool to take off the lock cylinder or they can make use of a torch to cut the pin and then shave it down to take it off. They will be able to change the cylinder's key to match your current keys and save you the cost of a new ignition cylinder.
Replace the Ignition Cylinder
The ignition cylinder is the cylindrical mechanical component that houses and secures your car's key. The cylinder "reads" the anti-theft code and then fits your key to allow you to start or stop your vehicle. As time passes the cylinder will wear out. It could also be bent or broken. In this situation, you will need to replace the cylinder to get your car running.
Symptoms of a broken or worn cylinder include problems with turning the key, or the ignition switch not moving into the ACC or RUN position, or with a warning light appearing on the dash. If you have a spare, consider using it inside the lock. You might be able to make the cylinder more pliable using graphite or WD-40, however this technique only works for so long.
If you've got a new key to replace the ignition cylinder, and follow the instructions above to install it. Install vehicle locksmith making sure it's properly fitted into the steering-column tube flange and aligned to the keyway on the shroud. If you're unsure about the proper alignment of the cylinder, refer to your vehicle's repair manual or an expert.
After the cylinder is installed and the ignition switch is turned to ACC or RUN. You should hear a click that indicates the ignition switch is fully set within the cylinder. If your vehicle is equipped with an anti-theft device, you will have to follow the anti-theft relearn procedure for the new ignition cylinder in order to program it to your key.
Some experts recommend replacing the ignition cylinder, as it is typically required to shut off the airbag inside the steering column to access the cylinder. The replacement may require removing the steering wheel and the ignition covers. This is why it's best to leave the job to a professional mechanic with experience. They will be able remove the cover on your steering wheel and install a new ignition locking cylinder inside your vehicle. They will also be able verify that the ignition lock cylinder has been programmed with your key, and that it is properly started when you insert it.
Installing the Ignition Cylinder
While ignition lock cylinders are becoming less necessary in modern vehicles due to advancements in remote start and push-tostart systems, they're common on older cars. If you're having trouble starting your car or if the ignition switch is not working, it could be a defective ignition cylinder. Luckily, it's relatively easy to replace the ignition lock cylinder and repair the issue.
The ignition cylinder is a mechanical component of the system which is inserted into the ignition switch in your car and provides power to the rest the engine. The ignition switch and ignition cylinder are separate components. The switch is the electrical component that connects to the computer in your car and transmits signals to turn on the motor when you turn the key.
Ignition lock cylinders feature pins that move upwards and downwards to let your key slide into and rotate within the cylinder. Each movement of the key and cylinder creates friction, which keeps the key in its place. However, as time passes, the wafer tumblers can wear out. If the tumblers get worn out and the key is no longer able to slide into the cylinder, it will be unable to slide into the cylinder, or turn it.
The first indication of trouble is usually a worn-out ignition coil in most cars. The key may also get stuck and be difficult to insert into or out of the ignition lock cylinder. These are all signs that the ignition lock cylinder must be replaced as soon as possible.
It's not difficult to change your ignition cylinder, however, you should only do it if you are certain that you will follow the correct procedure for your vehicle's specific model and make. You can do the job quickly and efficiently with a complete repair guide for your vehicle. If you're not confident in installing the ignition cylinder on your own make one of our ASE certified mobile mechanics complete the repair for you at a time and in a location that's convenient to you.
Testing the Ignition Cylinder
The ignition lock cylinder, also known as the ignition lock cylinder, is a mechanical part that fits your key in order to enable it to turn and start your vehicle. It's located inside the ignition switch, which locks the ignition and reads anti-theft codes to permit key turning. The ignition lock cylinder is susceptible to wear and can eventually fail, causing issues powering your vehicle or making it hard to remove and insert the key.
The most common signs that a car's lock cylinder is about to go bad include difficulty getting your car started or locating locations where the key is stuck when you attempt to turn it. These issues are typically a sign that the cylinder is in need of be replaced. You might even notice an alert light flashing on your dashboard, signalling an impending failure.
As the cylinder gets older it may be damaged due to corrosion or wear and wear and tear. This can cause the wafer tumblers and pins to wear out, cause damage or even break, which can prevent your car's ignition from working. In some instances the ignition may function if you jerk it around, but this is a warning indication that something is wrong.
You can check the cylinder's ignition to determine whether it's worn out, or if the key has been bent or damaged. If you own a multimeter, you could back-probe the module's red connection and the ignition coil's battery terminal to determine if there's any voltage. If you don't find any voltage, the module and switch will most likely require replacement.
It is recommended to hire an expert mechanic to repair the ignition cylinder as it can cost between $200 to $300. The process is complicated by the fact that you may require removing other components to access the cylinder for ignition, such as the steering column. Depending on your vehicle, the replacement procedure can be accompanied by the need to disable the airbag system, and you'll need change the programming of your key to work with the new cylinder. This is usually handled by a dealer. However, you could do it yourself if you have the right tools and the right instructions.