It is very likely that your car key is not working because the lock is faulty or worn down.
Key not working in door lock.
Key is broken off in lock.
Replace it with a new key as soon as possible.
Repeat heating and inserting the key until the ice has melted.
If it is hold the key with a heavy glove and heat it with a match or lighter and then work it gradually into the keyway.
Insert your key into the ignition and pull it back out six times within a maximum of just 10 seconds.
Outdoor locks can collect a lot of dirt and dust inside the lock cylinder.
Pull the key out slightly while at the same time trying to gently turn it.
Dry powdered graphite will not cause any of the internal lock parts to stick as it is dry and will not attract dirt and dust.
A dry graphite lubricant will lubricate the inside of the lock making it easier to unlock.
Assuming the door lock is hard to unlock with a key because it is dirty or gunked up inside and not damaged your best bet is to use a dry graphite.
See below for taking apart your door lock and getting it to work like new.
Try not to flatten and damage the profile of the key.
Insert your key into the ignition and turn it to the accessory position.
A straighten key should go inside the lock even with a little force applied and some lubricant and you should open your lock.
Remember to replace your key because a key which has been bent once will remain fragile.
Get in your car and lock the door manually.
Spray the lock with lubricant to remove dirt and dust.
In the future keep a lock de icer on hand.
Things that will probably not work.
Expert advice on how to repair common problems with door knob locks and deadbolts such as stuck or frozen door locks latches that don t latch and keys broken off in door locks.
You may be able to take care of the problem yourself or you may need to call a locksmith for help.
When the door opens with one of these tricks you d better call me to rekey the lock or codecut the factory key.
If the key won t go into the lock ask yourself if the weather is cold enough for the lock to be frozen.
A key that doesn t turn in the lock could have several causes.
Pull the key out a little bit and then hit it softly with something while gently trying to turn it.
Car door locks work in conjunction with keys which means that if you are constantly using your car key to physically unlock your car door the internal mechanism of the lock will wear down over time.