I believe the only way to shut off the ASR is with a switch like the one at
http://www.precisionauto.com (they don't list it online, but it is in their paper catalog). I may be wrong on this, as a V8 E is still just in the planning stages for me.
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John
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E