How to Repair an Ignition Lock Cylinder
If your car's key won't turn it's time to change the ignition lock cylinder. The lock cylinder is a tumbler made of mechanical that your key slides into, and not the switch that is an electrical part of the ignition system.
Over time, these "wafer" tumblers can wear out or break. WD-40 and graphite can temporarily fix the issue, but replacing the tumblers is the only option.
Removing the steering column
Modern cars do not use a steering column lock cylinder. Instead, they utilize keys that are used to start the vehicle by pressing and turning a switch on the dashboard panel. This newer system is much easier and more efficient than the older lock cylinder method. Certain older vehicles still use the traditional lock cylinder. If this component is damaged, it might be necessary to replace it to allow the car to start. This is a task that should be handled by professionals.
Remove the trim panels that cover the lower and upper column of the steering with the help of a screwdriver. This will allow you to access the area around your steering column.
You will find an Allen head bolt on the side of the steering wheel closest to the driver that holds the unit for the wiper/signal unit in position. Remove the bolt and set it away. Based on the year of your car, you may have 3 or 4 small flat head screws that secure the plastic cover that covers the turn signal switch in place. Remove these screws and place them aside.
To access the lock cylinder you will need to take off the signal/wiper unit. This will require the use of a specific tool, or you could do it with an object of metal such as a cold chisel. Locksmiths will also be equipped with a shear bolt removal kit.
If the key cannot be placed into the ignition switch, it's possible that the lock cylinder is stuck. You can call 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.
Locksmiths can use a shear tool to take off the lock cylinder, or they can use a torch to cut the pin, then shave it down to remove it. They can re-key the ignition cylinder so that it matches the keys you already have. This will save you money on an entirely new ignition.
Replacing the Ignition Cylinder
The ignition cylinder is a cylindrical mechanical part that houses and secures the key of your car. The cylinder "reads" the anti-theft codes and matches your key to start or stop your car. The cylinder is susceptible to wear and tear over time. It may also become bent or broken. In this case, you will need to replace the cylinder to get your car running.
The signs of a damaged or worn cylinder can be seen in problems with turning your key, or with the ignition switch not moving into the ACC or RUN position, or with a warning light appearing on the dash. If you have an extra key, put it in the lock. You may be able to finesse the cylinder with some graphite or WD-40, but this technique only works for so long.
Replace ignition lock repair when you have a replacement key. Follow the instructions above to install the new ignition cylinder. When installing the new ignition cylinder ensure that it is placed in the flange of the steering column tube and is aligned correctly with the keyway on the shroud of the steering column. If you're unsure about the proper alignment of the cylinder, consult your car's repair manual or an automotive expert.
Once the cylinder has been installed then turn the ignition key to ACC or RUN. You should hear a click confirm that the ignition switch is completely seated into the cylinder. If your vehicle has an anti-theft system, you'll have to go through the anti-theft relearn process for the new ignition cylinder to program it to your key.
Some experts recommend having a professional replace the ignition cylinder, as it is often required to shut off the airbag inside the steering column to access the cylinder. The replacement process will likely require the removal of the steering wheel and the covers for ignition. For these reasons, this is a job that should be left to a skilled mechanic. They'll be able remove the cover for the steering column and install a brand new ignition lock cylinder to your vehicle. They'll also be able to ensure that the ignition lock cylinder is programmed with your key, and that it starts correctly when you insert it.
Installing the Ignition Cylinder
Although cylinders for ignition locks are becoming less necessary in modern vehicles due to advances in push-to-start and remote start systems, they're widespread on older cars. If you have trouble starting your car or the ignition switch is stuck, it could be a defective ignition cylinder. It's a good thing that it's fairly easy to replace your car's ignition lock cylinder, and then fix the problem.
The ignition the cylinder is a part of the system that is inserted into the ignition switch of your car and supplies power to the rest the engine. Many people confuse the phrase "ignition switch" with the ignition cylinder, they are actually two separate parts. The switch is the electronic component that connects to the computer in your car and sends signals to activate the motor when you turn the key.
Pins on ignition lock cylinders move upwards and downwards, allowing your key to slide and rotate inside the cylinder. Every movement of the key and cylinder creates a small amount of friction that keeps the key in place, but in time, these tiny movements can cause the wafer tumblers to wear down. If the tumblers wear down, your car's key won't be able to slide into or turn the cylinder.
The first sign of trouble is usually a worn ignition coil in most cars. The key can be stuck and make it difficult to insert into or out of the ignition lock cylinder. These are all indications that the ignition lock cylinder needs to be replaced as soon as it is possible.
Replacing your ignition cylinder is not difficult, but it's an undertaking that should be handled by a skilled do-it-yourselfer only if you're able to follow the right procedure for your specific brand and model of vehicle. A complete repair manual for your vehicle will assist you in getting the task done quickly and accurately. If you're not comfortable installing the ignition cylinder yourself it is possible to have one of our ASE-certified mobile mechanics complete the job for you at a convenient time and location.
Testing the Ignition Cylinder
The ignition lock cylinder is a mechanical component that fits your key and allows it to turn and start your car. It's mounted inside the ignition switch which is locked to the ignition and reads anti-theft codes to authorize key turning. The cylinder for the ignition lock will wear out and eventually fail. This can cause issues with the vehicle's power supply or make it difficult to insert and remove keys.
The most obvious indications that a car's lock cylinder is about to go bad include difficulty starting your vehicle or finding locations where the key is stuck when you try to turn it. These problems are usually a sign that the cylinder must be replaced. You might even notice a warning light flashing on your dashboard, signalling an impending failure.
As the cylinder ages, it may be damaged through wear and wear and. This could cause the pins and tumblers to wear out and break and stop the ignition of your car from unlocking. In some cases the ignition may function if you jerk it in different directions but this could be a sign that something could be wrong.
You can check your ignition cylinder and see whether the cylinder or key is damaged or worn out. If you own a multimeter, you can back-probe the module's red connection and the ignition coil's battery terminal to see if there is any voltage. If you are unable to detect any voltage then the switch and module will most likely require replacement.
The replacement of the ignition cylinder usually costs between $200 and $300, and it's recommended to hire an experienced mechanic complete the task. The process is complicated due to the fact that you could require removing other components to access the cylinder for ignition, such as the steering column. Depending on the model of your vehicle the replacement process may be accompanied by the need to disable the airbag system, and you'll have to reprogramme your key to work with the new cylinder. This can be done at the dealership however, you can learn how to do it yourself using the proper tools and instructions.