Key won’t turn after installing new ignition cylinder and ignition lock. Need help polishing things off.

I installed a brand new ignition cylinder and ignition lock. Before installing and while the battery was disconnected, the key turned fine though stiff (I'm using my original key rather than the blanks as advised).
Everything seemed/seems fine.

I connected the battery and turned the key forward and back to see how it felt. When I went all the way back, it locked and won't budge any more. The steering wheel is also locked, so I tried turning it while turning the key with no luck. I tried tapping the cylinder, putting it into neutral, and tried the blank keys that came with the cylind

Experienced mechanics share their insights in answering this question :
Hi there:

This problem tends to occur when an aftermarket ignition cylinder is used for the replacement project. The inner lock housing sometimes doesn’t always fit flush to OEM steering columns, which can create the symptoms you’re experiencing.

Here are the directions on how to replace an ignition cylinder article, you should check out. The best option is to remove the old one, and start from scratch. Verify that you’re using an OEM replacement cylinder; as aftermarket parts typically cause more hassle than help in this case.

If you need assistance with fixing this issue, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose the issue with your key firsthand for an accurate repair.

How to Identify and Fix Common car Problems ?

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Try gently turning the steering wheel from right to left, while simultaneously turning the key carefully in the ignition. If this fails, try rocking the wheel instead, all while wiggling the key gently.
The most common reasons a Buick Regal key won`t turn are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key. Search our network of RepairPal Certified shops near you to speak with a technician about your issue. Oops!
If security systems are attached to the ignition switch/assembly, then further programming is needed to recode the keys, which will add another $100 to the bill. Keep in mind, pricing will vary by location and your vehicle make and model.
Tape, glue, and other debris can cause your car key to get stuck in the ignition and can also make it difficult to turn the key to start the car. If this is your issue, pull the key out carefully while wiggling the steering wheel to release the tumblers and, hopefully, pull the debris out too.
IF THE KEY FOB LOSES BATTERY OR SIGNAL POWER

Press the small button on the side or back of the key fob while pulling out the side closest to the button. This will reveal the mechanical key inside. Find the small slot on the right side of the driver`s door handle.

After replacing the ignition switch on your vehicle you should be able to reprogram it manually. Putting the key into the ignition and leaving it there for a few seconds until an indicator comes up on the dashboard saying “key teach in progress” . After doing that 3-4 times the vehicle should start up as normal.
The most common reasons a Buick Century key won`t turn are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key. Search our network of RepairPal Certified shops near you to speak with a technician about your issue. Oops! We got lost!
If your Buick LeSabre`s key won`t turn, check to see if the transmission is in Park. Many models will prevent the key from turning if the car isn`t in park when turned off. Make sure your car`s parking brake is enabled before you do anything else.
Bad starter motor: If you hear a single click when you turn the key, but the engine won`t start, that could mean there`s a problem with the electrical system. The starter motor is responsible for physically turning the engine over and getting the engine to fire. If this is the issue, you`ll need a new one installed.
Definitions of ignition lock. a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key. synonyms: lock.
If the ignition switch is left in the “Lock” position, this will lock the car until it moves the key from the lock position. That means that if the ignition switch is in the locked position, no matter how you try, the engine will not start. That means, even if the battery is dead.
Do I need to reprogram the key fob after changing the battery? Typically, you do not need to reprogram the key fob after changing the battery. However, if you`ve replaced not just the batteries but also some of the internal wiring and electronics, you may need to reprogram it by pairing it with your vehicle once again.
Yes, you can. The ignition switch is separate from the EWS system, so replacing the switch will still allow you to use the current keys you already have. Only if you have to replace a faulty key or EWS module will you have to possibly order all new keys.
Turn the ignition switch to START and hold it there until the engine starts (a maximum of 10 seconds), then release the key. It should be started without depressing the accelerator pedal. Do not wait for the engine to warm up while the vehicle remains stationary. Start driving at moderate engine speeds.
Turn the ignition switch to START and hold it there until the engine starts (a maximum of 10 seconds), then release the key. It should be started without depressing the accelerator pedal. Do not wait for the engine to warm up while the vehicle remains stationary. Start driving at moderate engine speeds.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Key won’t turn after installing new ignition cylinder and ignition lock. Need help polishing things off.
ANSWER : Hi there:

This problem tends to occur when an aftermarket ignition cylinder is used for the replacement project. The inner lock housing sometimes doesn’t always fit flush to OEM steering columns, which can create the symptoms you’re experiencing.

Here are the directions on how to replace an ignition cylinder article, you should check out. The best option is to remove the old one, and start from scratch. Verify that you’re using an OEM replacement cylinder; as aftermarket parts typically cause more hassle than help in this case.

If you need assistance with fixing this issue, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose the issue with your key firsthand for an accurate repair.

Does a new ignition lock cylinder include new keys?
ANSWER : The new lock cylinder does come with new keys but you would have to use the original key to open the doors or have all of the lock cylinders on the doors and trunk match the new ignition lock cylinder. In this case, you are better off having a dealer or lock smith cut out an identical ignition lock cylinder to match the original key so that you will not have to replace everything.

2000 escalade will not lock with the key in the ignition, it only chimes and doesn’t engage lock.
ANSWER : Hi there. If the driver door is not locking with the door ajar and the key in the ignition, that is normal. If all of the doors are not engaging the locks with the key in the ignition and the engine off, that also is normal. If the engine is running and the transmission is in park, then the doors should lock and unlock, but auto lock when putting the vehicle in drive (if your vehicle has that function). Try this:

Remove the key from the ignition
Take the battery cable off the battery and put it back on
Take the key and put it into the driver door
Turn the key once to unlock the driver door
Turn the key again and the other doors should lock
Unlock the driver door and open the door
Put the key in the ignition and turn it to ’ON’
Hold down on the lock button to lock all of the doors and turn off the key
Turn on the key to the ’ON’ position and release the door lock button
Hold down on the unlock button to unlock all of the doors and turn of the key
Turn on the key to the ’ON’ position and release the door unlock button

This should program the computer system to unlock and lock the doors by the door lock switches. If this does not seem to work, then there is an issue with the programming in the computer or a failed door lock button on the driver door. I recommend seeking out a professional, such as one from Your Mechanic, to help you with your doors not locking if you are unable to get them to lock.

How to replace an ignition cylinder? do I also have to replace ignition switch? cause key has a chip that’s specific my dodge.
ANSWER : In some cases i have seen the outer ignition housing okay and just the key lock cylinder damaged. In others they damage the housing and ignition lock cylinder. In either case you cannot use your key; it will be a problem since the chip is programmed to your vehicle and will require programming. You may have to replace the entire housing on the column and have the new ignition key reprogrammed to start the car.

Before you purchase any parts, have it inspected to see the damaged parts so you get what is needed. You will need a qualified mechanic to install parts and program the key with a factory scanner. This may mean the dealer will have to do the programming of the new key or a specialized locksmith.

Car worked fine last night. Key won’t turn in ignition this morning. Black looking liquid on key when taken out. Chimes sometimes.
ANSWER : Hello and thank you for contacting YourMechanic. There is a rubbery stick substance that is inside the ignition switch to protect the key as it is inserted. What seems to happen is the ignition switch got hot and melted the rubbery stick substance. The fix to this is replacing the ignition switch for it to got hot and failed. Also, check the wiring to the ignition for any loose or damaged wires. If you need further assistance with the ignition switch, then seek out a technician, such as one from YourMechanic to help resolve this problem for you.

car sat for 14 days, key stuck in ignition won’t turn over, new battery doesn’t help
ANSWER : Many different items can cause the vehicle to not start. With the key stuck in the ignition it is possible there is a ignition switch or key cylinder fault. For the no start, the most common causes are the ignition switch, battery, starter, fuel pump or battery cable. I recommend having a qualified mechanic, such as one from YourMechanic, come to your home or office to inspect your no-start condition and make the correct repair.

New key 2000 beetle, won’t turn on ignition
ANSWER : Likely, the cause of your issue is that your key was cut incorrectly. I would make sure you gave VW the correct VIN number when you had the key made. You may need to get another key made. If this does not solve your issue, I would recommend having a qualified mechanic look into your igniton. It is also likely that you will have to replace your ignition.

Replacing an ignition lock cylinder with no keys?
ANSWER : Hi there. Typically trying to get a key made to fit an ignition lock cylinder is next to impossible. The best advice we’d suggest is to replace your ignition lock cylinder; and make multiple copies of the keys (just in case this happens again).