To shut down the ASR -- without putting the car into permanent limp mode.
When I had ASR issues, I was impressed by the power the car had for those first few moments after restarting, before ASR had a chance to re-engage.

I first noticed it, in a dramatic way, when I had one of the neutral safety switch/ASR issues I wrote of in other threads. I restarted the car at a red light and, when it turned green, tapped the accelerater as usual, and the car took off like a rocket. (Good thing there where no nuns or small children in the intersection -- or a police cruiser behind me.)

I am convinced ASR is a throw-back to Germany's Nazi days, with the fascist little computer gleefully deciding how, and when, to allocate the torque we paid good money for.

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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black