u/Maus_Haus_7906

E90 328xi from 2008. I have been driving it for about a week since it started, the car has like a hiccup when idling no check engine light. I have changed the spark plugs recently but not the coils, could this be a problem with the coils?
This seems to be happening on long drives during hot days, as on my other drives the car idles fine. The warning light is a brake light which I have also changed recently but didn't bother with resetting the light. thoughts?