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General E46 Forum
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Old 10-18-2012, 03:30 PM   #1
adaseb
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Join Date: Jan 2006
Location: Canada
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My Ride: 2002 BMW 320i
ASC vs. DSC ?

What is the difference between the 2 exactly?

All I know is I have ASC and when I push the ASC button once, it disables nothing that I can tell but when I push and hold ASC for like 5 seconds it disables traction control so the wheels spin and I can get out of a snow ditch.

How is DSC different?
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Old 10-18-2012, 03:56 PM   #2
SweTurbo
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Join Date: Nov 2008
Location: Europe
Posts: 2,899
My Ride: 323i -98
You have it confused

ASC is just monitoring the rear wheels for differential slip, as soon as it sees slip it cuts spark/fuel to a number of cylinders along with the MDK reducing throttle.
ASC is disabled with one quick push of the button, no more modes , just on or off.

DSC monitors steeering angle along with wheel slip, if it notices you turning the wheel more than it "feels" the car turn it will apply pressure to the caliper it calculates will reduce the car understeering/spinning etc.
DSC also has the ASC function in it , a quick press here allows you to rev it to 3k rpm with wheelslip, the stability control is however active, holding it for 5seconds will disable the DSC completly.
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