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Message: <blockquote data-quote="bimmerholic" data-source="post: 391431" data-attributes="member: 16686">No i got a feeling the cause herein lies within your traction control module that regulates the throttle. One way to check if your ASC "Anti-Slip Control" a.k.a ASR "Anti-Slip Regulator" working or not is to SLAM on your throttle on a wet slippery surface (mall car parks is perfect place if you can't find anywhere near your house) with the ASC switched on (meaning triangle light doesn't light up) and see if the triangle blinks when your rear wheels losses traction. When this happens, you can feel juddering at the rear wheels cuz the the throttle is regulated despite you flooring the pedal.If that happens, then your ASC is working fine. Now turned it off (triangle will light up) and slam on throttle again. This time the rear wheels will do a burnout. Also means your ASC is working (not supposed to regulate throttle when you switched it off).But how often do you get the light blinking on it's own without any loss of traction to the rear wheels?With the ASC on, and sweep any corners (sharper than usual with speed), you should see the triangle blink as it's keeping your rear wheels in check without throwing you into a spin.</blockquote>