WHAT WOULD BE THE PROBLEM WHEN THE STEERING WHEEL DID NOT LOCK WHEN IN PARK ?

try turning your steering wheel from left to right while you gently try removing the key. if that doesnt work and your car is a automatic with the shifter in the center console there is a cable running to the transmission that sometimes becomes loose causing the car not to be fully into the park position.

The ignition lock includes the steering wheel lock. It's possible that it just needs lubrication, or that the lock part has broken. In either case, taking the covers off the steering column sounds like your next move.

is shifter on steering wheel ,is wheel turned really far one way or other if it is you need to turn wheel a little more the way it is turned, and it should come out of park

It sounds like the steering lock has gone hard due to turning the wheel after key is out, turn the key and steering wheel at the same time and see if this releases the lock. Hope this helps

Is your steering wheel turned tight.Sometimes if you park and leave your wheels turned a little bit it pulls on the lock on the steering wheel sometimes.You have to try and move your steering wheel when its off and see if its real hard to move.try pulling the steering wheel off the lock and turn the key.also I think u meant the brain.

Try wiggling the steering wheel when you turn the key. Sometimes there's a steering lock. Also, make sure the car is in Park. Could be the lock cylinder, or the wheel lock jamming.

The park lock out is powered by the brake light circuit, so 1st thing to do is check and see if the brake lights work, if not you have found the problem. Repair the brake lights as needed. You can over ride the lock out by turning the key in the the switch just short of the spring loaded position that starts the car while wiggling the shifter.

try this..turn the steering wheel as hard as you can until it locks(any direction)then put key in ignition and holding wheel over (anyway)turn key to start car.then when you park up turn wheel over 1/2 turn to park...should work...(toyota have an antitheft steering lock)the wheel will turn when steering lock is on.rather than break lock.please do not try to see if it works....only works once...and not in handbook...

I bet you your stearing wheel is locked, so try this.....When you put the keys in the ignition rock the steering wheel left and right while trying to turn the key....This is a common thing with most vehicles

Do not shift into park and move the steering wheel to lock it. It will lock itself if the vehicle is moved or someone tries to steel it. Reason is that the lock pin hsas many holes to drop into and if you lock it when you have turning pressure on in it. You will lock it with pressure on the lock pin.
Second, always set your parking brake before, not after putting it in park. Never put your front tires against a curb and put it in park without letting the vehile roll away from the curb.. An don't hang you car on a slope by putting it in park. Parking brake always befor parking gear and hands off steering wheel when placing in park. Try it, you'll like it.. forcing your shifter to come out of park can cause damage to the shifting componants. Let me know how it works for you. - Ned_