Thank you guys! Well... so, believe that it should still be fine even if the ERROR lights on in case I am not driving aggressively then....
Well.... my challenge is that the ERROR light comes out and goes off... say, even for this morning, everything is fine. However, the ERROR light turned on when I was reversing slowing going to the lift of my car park, what I did was just reversing and hitting the brake. Somehow I kind of feeling like the ERROR comes out when I hit the brake (but not always the case). Then the ERROR light went off after I reach the ground floor and start moving the car.... (I used handbrake and turned to Neutral when my car is in the lift and not stepping on the brake). So, somehow, it is hard to tell whether it is the actuator problem or the brake pressure switch problem...
Ummmm.... would a diagnostic with SD1/2/3 can see the history and find out which part sent the ERROR signal? If history record retained, believe it would be worthwhile to go to the dealer here and ask them to have a check.... just worry that the ERROR light doesn't come out during the diagnostic and nothing could be found by the dealer....
Cheers,
Michael.