I've just done a similar job as you and ended up with the same problem.
Make sure you have put it back together properly. I didnt put the screw, thats driven from the motor, back in quite straight the first time and it stopped the car locking.
Make sure you have put it back together properly. I didnt put the screw, thats driven from the motor, back in quite straight the first time and it stopped the car locking.