Quoted from jfaulkner56:
I’m sure it’s mentioned somewhere, but after searching for 20 mins, I can’t find it. So can someone tell me what to do if Smaug’s mouth stops moving when he talks? I found a post where someone else asked this question but got no answer. After finally dealing with air balls due to rollovers, ramps that were bent in the front, and beasts falling apart... I was starting to love this game again. Yet another issue makes me just want to go back to POTC though. So annoying. Thanks in advance!
Almost positive it’s the servo motor. I replaced mine by taking Smaug apart a dozen times but gave up after not getting it to work. But I believe many people have replaced their servo motors and have had success. JJP has the motors and the manual clearly shows how to replace. There are also settings in the menu. You can try changing the values and see if that works.
Also, there are numerous posts about Smaug’s mouth.