I've had a similar issue, the BAS/ESP light comes on after a few minutes of driving, which disables the traction control. I do the reset and it goes away for a few minutes, but will come back on again when I start to drive. Have checked the brake light switch and this seems to be fine. I think it is one of the wheel sensors or the steering angle sensor. The only fault code the car is showing is the P0410 - Secondary Air Injection - totally seperate issue. I don't have the issue with the spoiler being stuck as other member have reported.