ABS light and car sign with squiggly lines came on and won't go off...what to do

Sounds like a traction control and anti-lock brake system concern. These systems utilize the same components to function, so it's normal for both lights to come on when a problem occurs. You will need to carry out a diagnostic test of this system to see what has failed. The warning light indicates that you will find trouble codes, and will have an opportunity to trace them down to the root cause or causes. That's easier than trying to find an intermittent concern!