Ignition has locked and the key won't turn - 2001 Hyundai XG300

probably need a new ignition lock or your key is wore. ignition locks arn't too bad to change depending on the vehicle.

ignition lock could be bad. also try turning the steering wheel a bit to release the pressure and then try the key. if it dont work, could be the ignition lock

need to reprogram ignition key security system when battery disconnected. turn ignition key to the on position for 3 to 10 seconds until the lock light goes out then start vechicle.if lock light dont turn off turn ignition switch to on position 30 seconds until lock light turn off.

Usually a sign the tumblers in the lock cylinder have worn out or jammed.
You may have to get the lock cylinder drilled out and replaced.

Make sure your steering wheel isn't locked. Sometimes a key won't turn until you jiggle the wheel while trying to turn the key.

If the ignition wont lock in place,just redo it but this time you need to realize that you install the key cylinder with the key in the ON postion,straight into the lock cylinder housing,aligning the retaining tabs,on the key cylinder with the hole in the lock cylinder housing.Then turn the key to the off position,

several things, does key go in and out easily, turn steering wheel in both directions while turning key. sometimes the steering wheel lock binds the lock cylinder and turning wheel releases the pressure and it will turn. other than that the ignition cylinder is jammed, wet key lightly with lubricant such as wd-40 and a light bit in key hole and try key again, If key is heavily worn out , try a different ignition key as it might not be disengaging all the tumblers in lock, if all this fails you need a new cylinder.

make sure the stick is in reverse and the key is all the way in the ignition

If your steering wheel is locked, turn it a bit away from the locked position. Key should turn now.

Otherwise, you may need to replace the ignition or you have a bad copy of a key.

the key may be worn badly or the ignition needs to be replaced.