Recently my ASC and ABS simultaneously lit up. I was doing a 3 point turn and when I finish and parked the car with the engine still running, the two lamps lit up just lit up. Now the lamps light up after about 5 - 15mins after start up and stay on, even if I press the ASC button a few times. It's not always constant, one day I'll start the car and the lamps with lit up 5 mins later, and other days it will lit up 15 mins later sometimes even longer. From my understanding from reading other forums, it could be either the ABS module (expensive) or the wheel sensors (cheap). Am I correct?