"after stepping on brake hard a few times. That doe not work anymore" .....I'm sorry, but do you mean they do not work anymore?
So just to be certain, sometimes the DRL's work, but sometimes they do not, correct?
Thank you. Most of the time this is a bad DRL control unit. It is located under the dash on the driver side.
There is an input test for it, but with an intermittent problem, it would be very hard to test to confirm since sometimes it works, sometimes it does not.
The only way to be certain would be to swap it with a known good one and retry, but I see a lot of these bad and this would be my first choice.
Here ya go.