Ever since I've bought my S3, The ESP light has been on. But its a strange fault. If i turn the engine off and start it again, The ESP will remain off, as soon as i hit over 10MPH it'll flick on and stay on throughout my journey. I've had VagCom on it and its bringing up the fault code 01324 - Control Module for All Wheel Drive (J492). I have tried a another Haldex ECU and the problem still persists. I've been advised that it could be the Pre-Charge Pump, I have another one but not tried it as of yet. I've also been told that it could be the MAF Sensor? What are your thoughts guys? Any input appreciated. I seriously want to conquer the problem.