A friend just bought a 2015 Dodge Journey. It goes in and out of "ship" mode. She knows how to turn ship mode off. The knob on the dash is broken, so she has to use a screwdriver. She says that it will reset itself and be fine for a few days, and then without warning, back to "ship" mode. She's planning to replace the knob, but since it does go back into normal mode, it doesn't sound like the broken knob is the problem. Any ideas?