thank u all. I just resoldered my main relay this afternoon after the same thing happened to me again. it works fine now.
However, by disconnecting my battery and reconnecting it, I triggered my alarm system, lucky me!, after 10min driving, the alarm went off. people on the road were trying to stop for me since they thought I'm driving a undercovered cop car........................
I never thought my alarm system is still working... not everything is fine expect a red LED next to my cruise controll button is flashing continously, I guess that's just the alarm system indicator and it's fine, am I right??