Brakes that fail, a body that will not obey — losing control is read as anxiety about events moving beyond your reach. Dream books see it as a call to notice what can, and cannot, be steered.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.