There have been some conversations about Hazzard Lights flashing when braking hard.
Coding I have found
High intensity brake light (hazards flash with hard braking)
09 - Central Electronics
Adaptation - 10
(1)-Assistance light functions-Notbremsanzeige NBA -> "active" (default "not active")
(2)-Dyn. turn signal modes-Notwarn_blinken_NBA_Phase_2 -> "active"
(3)-Dyn. turn signal modes-Crashblinken -> "active"
I have not 2 or 3 set on my car and i have not seen the hazards flash when braking hard.
According to the site i got this from it only works under heavy braking (abs kicks in) and or you are doing over 105km before hitting brakes.
I have not had a chance to make the changes and test it but just sharing in case it does work.
Well I tried to make this change but I could not get into the Dyn. turn signal modes - not sure if thats an OBD11 Issue as the Beta is suffering some issue at the mo.
However the good news just took the car to local town, doing 120km and slamed the brakes on to stop the car (not slow down stop) and the emergency flashers came on and when I took my foot off the brake they turned off.
Therefore I can only assume you need (1)-Assistance light functions-Notbremsanzeige NBA -> "active" (default "not active") set to ACTIVE
Assistance light functions-
Not
brems
anzeige
NBA = Emergency brake indicator NBA