Anti lock brake light

If the ABS lamp is coming on and going off during trips then this is normally caused by a failing sensor. most likely a failing abs wheel speed sensor. unfortunately intermittent problems like this are very hard to find . the best thing to do is wait until the ABS lamp stays on, then use a ABS diagnostic scanner to retrieve the ABS trouble codes. this will pinpoint the culprit and save you a lot of headache as well as money from guessing and replacing parts that may be good in the first place.

Here is a guide to help check the sensors

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Please run down this guide and report back.